BACKGROUND
Wireless communication systems such as, by way of example and not by way of limitation, Bluetooth, LAN (Local Area Network), UWB (Ultra-Wideband), WLAN (Wireless Local Area Network), WiMAX (Wireless Broadband) and WWAN (Wireless Wide Area Network) systems operate in RF (radio frequency) ranges that may overlap with clock frequencies of various processors used within computing devices If a CPU (computer processing unit) or other processor is not sufficiently separated from or shielded from a wireless device, then the clock used within the CPU or other processor may interfere with wireless communications and noticeably degrade quality of performance of the wireless communication system.
Thus, what is needed is an apparatus and method capable of reducing noise in a wireless communication station
BRIEF DESCRIPTION OF THE DRAWINGS
The subject matter regarded as the invention is particularly pointed out and distinctly claimed in the concluding portion of the specification. The invention, however, both as to organization and method of operation, together with objects, features, and advantages thereof, may best be understood by reference to the following detailed description when read with the accompanying drawings in which
FIG. 1 is a graphic representation of first and second time intervals employed in communication operations when using the present invention,
FIG. 2 is a graphic representation in the frequency domain of a signal received during a second time interval;
FIG 3 is a schematic diagram of an apparatus configured according to the teachings of the present invention;
FIG. 4 is a flow chart illustrating an embodiment of one method of the present invention.
It will be appreciated that for simplicity and clarity of illustration, elements illustrated in the figures have not necessarily been drawn to scale For example, the dimensions of some of the elements are exaggerated relative to other elements for clarity. Further, where considered appropriate, reference numerals have been repeated among the figures to indicate corresponding or analogous elements
DETAILED DESCRIPTION
In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.
Some portions of the detailed description that follows are presented in terms of algorithms or symbolic representations of operations on data bits or binary digital signals within a computer memory or signal handling device. These algorithmic descriptions and representations may be the techniques used by those skilled in the data processing arts to convey the substance of their work to others skilled in the art.
An algorithm is here, and generally, considered to be a self-consistent sequence of acts or operations leading to a desired result These include physical manipulations of physical quantities. Usually, though not necessarily, these quantities take the form of electrical or magnetic signals capable of being stored, transferred, combined, compared, and otherwise manipulated It has proven convenient at times, principally for reasons of common usage, to refer to these signals as bits, values, elements, symbols, characters, terms, numbers, signals or the like. It should be understood, however, that all of these and
similar terms are to be associated with the appropriate physical quantities and are merely convenient labels applied to these quantities
Unless specifically stated otherwise, as apparent from the following discussions, it is appreciated that throughout the specification discussions utilizing terms such as "processing," "computing," "calculating," "determining," or the like, refer to the action and/or processes of a computer or computing system, or similar electronic computing device, that manipulate and/or transform data represented as physical, such as electronic, quantities within the computing system's registers and/or memories into other data similarly represented as physical quantities within the computing system's memories, registers or other such information storage, transmission or display devices.
Embodiments of the present invention may include apparatuses for performing the operations herein. An apparatus may be specially constructed for the desired purposes, or it may comprise a general purpose computing device selectively activated or reconfigured by a program stored in the device Such a program may be stored on a storage medium, such as, but not limited to, any type of disk including floppy disks, optical disks, compact disc read only memories (CD-ROMs), magnetic-optical disks, read-only memories (ROMs), random access memories (RAMs), electrically programmable read-only memories (EPROMs), electrically erasable and programmable read only memories (EEPROMs), magnetic or optical cards, or any other type of media suitable for storing electronic instructions, and capable of being coupled to a
system bus for a computing device.
The processes and displays presented herein are not inherently related to any particular computing device or other apparatus Various general purpose systems may be used with programs in accordance with the teachings herein, or it may prove convenient to construct a more specialized apparatus to perform the desired method The desired structure for a variety of these systems will appear from the description below In addition, embodiments of the present invention are not described with reference to any particular programming language. It will be appreciated that a variety of programming languages may be used to implement the teachings of the invention as described herein In addition, it should be understood that operations, capabilities, and features described herein may be implemented with any combination of hardware (discrete or integrated circuits) and software.
Use of the terms "coupled" and "connected", along with their derivatives, may be used. It should be understood that these terms are not intended as synonyms for each other. Rather, in particular embodiments, "connected" may be used to indicate that two or more elements are in direct physical or electrical contact with each other. "Coupled" my be used to indicated that two or more elements are in either direct or indirect (with other intervening elements between them) physical or electrical contact with each other, and/or that the two or more elements co-operate or interact with each other (e.g. as in a cause an effect relationship).
It should be understood that embodiments of the present invention may be used in a variety of applications. Although the present invention is not limited in this respect, the devices disclosed herein may be used in many apparatuses such as in the transmitters and receivers of a radio system. Radio systems intended to be included within the scope of the present invention include, by way of example only, cellular radiotelephone communication systems, satellite communication systems, two-way radio communication systems, one-way pagers, two-way pagers, personal communication systems (PCS), personal digital assistants (PDA's), wireless local area networks (WLAN), personal area networks (PAN, and the like)
Types of cellular radiotelephone communication systems intended to be within the scope of the present invention include, although not limited to, Code Division Multiple Access (CDMA) cellular radiotelephone communication systems, Global System for Mobile Communications (GSM) cellular radiotelephone systems, North American Digital Cellular (NADC) cellular radiotelephone systems, Time Division Multiple Access (TDMA) systems, Extended-TDMA (E-TDMA) cellular radiotelephone systems, third generation (3G) systems like Wide-band CDMA (WCDMA), CDMA-2000, and the like
FIG. 1 is a graphic representation of first and second time intervals employed in communication operations when using the present invention In FIG 1, a graphic representation 10 includes a time line 12 having indicated time intervals 14. A first interval 16 may begin at a time to and continue until a time
ti A second time interval 18 may begin at time t| and continue until a time {2-Other data communications (not indicated in FIG. 1) may follow time t2
FIG. 2 is a graphic representation in the frequency domain of a signal received during a second time interval. In FIG. 2, a graphic representation 20 is presented with a vertical axis 22 indicating amplitude and a horizontal axis 24 indicating frequency Received RF signals are plotted in the frequency domain in a signal plot 26 Signal plot 26 represents a baseband frequency range extending from a lower baseband frequency limit feBO to an upper baseband frequency limit feB-i- Noise signals 30, 32, 34 are identifiable in signal plot 26 Noise signals are generally identified as having a very short duration and a noticeably greater amplitude than other received signals Noise signals may be identified using predetermined criteria such as, by way of example and not by way of limitation, a very short duration giving appearance of a "spike" on a plot such as signal plot 26 and having an amplitude exceeding other signals, such as an amplitude exceeding a predetermined amplitude 28 on a plot such as signal plot 26
FIG. 3 is a schematic diagram of an apparatus configured according to the teachings of the present invention. In FIG. 3, a noise reduction or noise suppression apparatus 50 may include an antenna device 51, an interface unit 40, signal detecting devices 52, 54, 56, signal generating devices 53, 55, 57, a signal handling section 58 and a summing node 70, although the present invention is not limited to these components.
During a time interval, such as second (non-communicating) time interval 18 (FIG. 1), no station in the wireless communication system (not shown in detail in FIG 3) is transmitting Signals received at antenna device 51 represent wireless channel noise and host computer platform noises such as clock signal noises
There are preferably m signal detecting devices (as indicated in FIG 3)
to accommodate an expected m dominant spectral components in received signals during non-communicating time interval 18 (FIG 1) The indicator "m" is employed to signify that there can be any number of signal detecting devices and any number of signal generating devices in noise reducing or noise suppressing apparatus 50 The inclusion of three signal detecting devices 52, 54, 56 and three signal generating devices 53, 55, 57 in FIG 3 is illustrative only and does not constitute any limitation regarding the number of signal detecting devices and signal generating devices in the noise reducing or noise suppressing apparatus of the present invention. Signals received at antenna device 51 are provided to interface unit 40 Interface unit 40 provides signals to a signal detecting device 52 and provides signals to a positive summing node 72 of summing unit 70.
Considering FIGs 2 and 3 together, apparatus 50 receives a signal having noise spikes 30, 32, 34 at random locations within frequency range feBo -fBei Each of signal detecting devices 52, 54, 56 may be embodied in an adaptive notch filter or an adaptive line enhancer device with high-narrow-
bandpass characteristics. Signal detecting device 52 may search frequency range fBB0 - fBB1 and lock on to the first strong spectral peak - noise spike 30 (FIG. 2), as indicated by a response plot 60 for signal detecting device 52. When signal detecting device 52 locks on to noise spike 30, narrow-bandpass filter design characteristics or similar signal characteristics may be stored as a first characteristics set NBF1. First characteristics set NBFi may be employed
by signal detecting device 52 so that a first locked spectral component (i.e., noise spike 30) may be notched out and the remaining signal may be passed on to signal detecting device 54 and to a signal generating device 53.
Signal detecting device 54 may search frequency range feeo - fBBi and lock on to the first strong spectral peak, which will be noise spike 32 (FIG 2), as indicated by a response plot 62 for signal detecting device 54. The first strong spectral peak encountered by signal detecting device 54 may be noise spike 32 because noise spike 30 has been notched out by signal detecting device 52 When signal detecting device 54 locks on to noise spike 32, narrow-bandpass filter design characteristics or similar signal characteristics may be stored as a second characteristics set NBF2. Second characteristics set NBF2 may be
employed by signal detecting device 54 so that a second locked spectral component (i.e., noise spike 32) may be notched out and the remaining signal may be passed on to signal detecting device 56 and to a signal generating device 55
Signal detecting device 56 may search frequency range fBB0 - fBB1 and
lock on to the first strong spectral peak, which will be noise spike 34 (FIG. 2), as indicated by a response plot 64 for signal detecting device 56. The first strong spectral peak encountered by signal detecting device 56 may be noise spike 34 because noise spikes 30, 32 may be notched out by signal detecting devices 52, 54. When signal detecting device 56 locks on to noise spike 34, narrow-bandpass filter design characteristics or similar signal characteristics may be stored as a third characteristics set NBF3. Third characteristics set NBF3 may be employed by signal detecting device 56 so that a third locked spectral component (i e , noise spike 34) may be notched out and the remaining signal may be passed on to a signal generating device 57.
Signal detecting device 52 may employ characteristics set NBF1 to skip
(i.e , block) noise spike 30 when searching frequency range fBB0 - fBB1 Second signal detecting device 54 may lock on to the second strong spectral peak -noise spike 32 (FIG 2), as indicated by a response plot 62 for signal detecting device 54. When signal detecting device 54 locks on to noise spike 32, narrow-bandpass filter design characteristics or similar signal characteristics may be stored as a characteristics set NBF2 and may pass from signal detecting device
54 with the signal received signal detecting device 52. The signal received from antenna device 51 may be passed directly from antenna device 51 to signal detecting devices "downstream" from signal detecting device 54 or next furthest from antenna device 51, such as signal detecting device 56
When the signal detecting device next "upstream" from signal detecting
device 56 or next closest to antenna device 51 locks on to its respective noise spike, narrow-bandpass filter design characteristics or similar signal characteristics may be stored as a characteristics set NBF(m-1) and may be passed to signal detecting device 56 with the signal received from the second signal detecting device "upstream" from signal detecting device 56. The signal received from antenna device 51 may be passed directly from antenna device 51 to signal detecting device 56.
Signal detecting device 56 may employ characteristics set NBF(m--i) to skip any noise spikes between noise spike 32 and noise spike 34 when searching searches frequency range fBB0 - fBB1 Signal detecting device 56 may lock on to the strong spectral peak - noise spike 34 (FIG. 2), as indicated by a response plot 64 for signal detecting device 56. When signal detecting device 56 locks on to noise spike 34, narrow-bandpass filter design characteristics or similar signal characteristics may be stored as a characteristics set NBFm
Providing a characteristics set NBF1, NBF2, NBFm for each respective
noise spike 30, 32 to the next successive signal detecting device 54, 56 avoids having each successive signal detecting device 54, 56 locking on to first noise spike 30
When signal detecting device 52 locks on to noise spike 30, signal detecting device 52 may store signal characteristics such as phase, amplitude and frequency of noise spike 30 Storage may be effected within signal detecting device 52 or outside signal detecting device 52. When signal
detecting device 54 locks on to noise spike 32, signal detecting device 54 may store signal characteristics such as phase, amplitude and frequency of noise spike 32. Storage may be effected within signal detecting device 54 or outside signal detecting device 54 When signal detecting device 56 locks on to noise spike 34, signal detecting device 56 may store signal characteristics such as phase, amplitude and frequency of noise spike 34 Storage may be effected within signal detecting device 56 or outside signal detecting device 56
Signal generating device 53 may employ signal characteristics stored by signal detecting device 52 to generate a compensating signal having a frequency, phase and amplitude appropriate to substantially reduce, compensate for or cancel noise spike 30, as indicated by a response plot 61 for signal generating device 53 Signal generating device 55 may employ signal characteristics stored by signal detecting device 54 to generate a compensating signal having a frequency, phase and amplitude appropriate to substantially reduce, compensate for or cancel noise spike 32, as indicated by a response plot 63 for signal generating device 55 Signal generating device 57 may employ signal characteristics stored by signal detecting device 56 to generate a compensating signal having a frequency, phase and amplitude appropriate to substantially reduce, compensate for or cancel noise spike 34, as indicated by a response plot 65 for signal generating device 57
Compensating signals may be provided from signal generating devices 53,55, 57 to a signal handling device 58. Signal handling device 58 combines
signals received from signal generating devices 53, 55 57 to present a composite signal to a negative summing node 74 of summing unit 70 for combining with signals received from interface unit 40 during a communicating time interval such as first time interval 16 (FIG 1). Summing unit 70 presents an output signal at an output node 76 that is substantially a clean data packet signal with noise spikes (e.g , noise spikes 30, 32, 34 FIG 2) substantially removed
FIG 4 is a flow chart illustrating an embodiment of one method of the present invention. In FIG 4, a method 200 reducing noise in a wireless communication station begins at a START locus 202. The wireless communication station may have an electromagnetic antenna device for effecting wireless communication during a first time interval The wireless communication station may effect substantially no wireless communication during a second time interval
Method 200 continues, in no particular order: (1) providing at least one
signal detecting device coupled with the antenna, as indicated by a block
204; (2) providing at least one signal generating device coupled with the at least one signal detecting device, as indicated by a block 206, and (3) providing a signal handling section coupled with the at least one signal generating device, as indicated by a block 208.
Method 200 continues operating the at least one signal detecting device to detect received signals arriving at the antenna device during the second time
interval and identify at least one selected received signal component among the received signals having at least one predetermined characteristic, as indicated by a block 210.
Method 200 continues by posing a query whether a signal meeting predetermined criteria or having at least one predetermined characteristic has been detected and identified during the method step indicated by block 210, as indicated by a query block 212. If a signal meeting predetermined criteria or having at least one predetermined characteristic has been detected and identified, method 200 proceeds according to "YES" response indicator 214 to store at least one signal parameter relating to the at least one selected received signal component, as indicated by a block 216. Method 200 then poses a query inquiring whether evaluating or scanning of the bandwidth to be evaluated or scanned (e.g , frequency range feBo - ^BBI , FIG. 2) has been completed, as indicated by a block 218 If evaluation or scanning of the bandwidth is not complete, method 200 continues according to "NO" response indicator 222 to return to a locus 209 for a repeat performance of the method step represented by block 210.
If a signal meeting predetermined criteria or having at least one predetermined characteristic has been detected and identified when performing the method step represented by block 210, method 200 proceeds according to "NO" response indicator 220 and goes directly to query block 218 to query whether the evaluation or scanning of the bandwidth is complete.
If evaluation or scanning of the bandwidth is complete, method 200 continues from query block 218 according to "YES" response indicator 224 to operate the at least one signal generating device using the at least one signal parameter stored as indicated by block 216 to generate at least one compensating signal configured to substantially negate the at least one selected received signal component, as indicated by a block 226.
Method 200 continues by operating the signal handling section to combine the at least one compensating signal with signals received by the wireless communication station during the first time interval, as indicated by a block 228. Method 200 terminates at an END locus 230.
As mentioned earlier herein in connection with describing FIG. 3, the signal processing procedure described in connection with FIGs 3 - 4 is employed during a silence period of the communication system operation. During periods when data packet reception occurs the signal processing procedure for tracking the spectral components is disabled. During data packet reception periods, the spectral components are exactly replicated (i.e., synthesized) in signal generating devices 53, 54, 55 and added in signal handling device 58 (FIG. 3). The synthesized spectral components are provided in antiphase to summing node 70. The antiphased synthesized spectral components and the spectral noise components (from interface unit 40) cancel out during summing operation of summing node 70. The output data packet signal that remains for presentation at output locus 76 is a substantially clean
data packet signal with noise spikes (e.g., noise spikes 30, 32, 34 FIG. 2) substantially removed.
Tracking and estimating noise spectral components (e g., noise spikes 30, 32, 34; FIG 2) takes place during silence periods of the wireless networks and synthesizing and canceling in antiphase takes place during data packet reception periods.
By way of example and not by way of limitation, some standards relating to WLAN (Wireless Local Area Network) systems require a mandatory period of silence following periods of data packet reception. The mandatory silent period is called a DIFS (Distributed Inter Frame Sequence, an interval of 54 microseconds); a period of silence during which no devices communicate and the only detectable signal components related to the WLAN system are platform noise or spectral signal components
While certain features of the invention have been illustrated and described herein, many modifications, substitutions, changes, and equivalents will now occur to those skilled in the art. It is, therefore, to be understood that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.

I claim:
1. An apparatus reducing noise in a wireless communication station; said
wireless communication station having an electromagnetic antenna device
for effecting wireless communication during a first time interval; said wireless
communication station effecting substantially no wireless communication
during a second time interval; the apparatus comprising:
(a) at least one signal detecting device coupled with said antenna device; said at least one signal detecting device detecting received signals arriving at said antenna device during said second time interval; said at least one signal detecting device identifying at least one selected received signal component among said received signals having at least one predetermined characteristic; said at least one signal detecting device storing at least one signal parameter relating to said at least one selected received signal component;
(b) at least one signal generating device coupled with said at least one signal detecting device; said at least one signal generating device using said at least one signal parameter to generate at least one compensating signal; said at least one compensating signal being configured to substantially negate said at least one selected received signal component; and
(c) a signal handling section coupled with said at least one signal generating device; said signal handling section combining said at least one compensating signal with signals received by said wireless communication station during said first time interval.
2. An apparatus reducing noise in a wireless communication station as recited
in Claim 1 wherein said at least one signal detecting device is a plurality of
signal detecting devices coupled with said antenna device in a series
network; each respective signal detecting device of said plurality of signal
detecting devices cooperating with a respective signal generating device of said at least one signal generating device to substantially negate said signal component identified by said respective signal detecting device in a signal to a next-successive said signal detecting device in said series network.
3. An apparatus reducing noise in a wireless communication station as recited in Claim 1 wherein said at least one signal detecting device is a first plurality of signal detecting devices and wherein said at least one signal generating device is a second plurality of signal generating devices.
4. An apparatus reducing noise in a wireless communication station as recited in Claim 3 wherein said first plurality equals said second plurality.
5. An apparatus reducing noise in a wireless communication station as recited in Claim 4 wherein said first plurality of signal detecting devices is coupled with said antenna device in a series network; each respective signal detecting device of said first plurality of signal detecting devices cooperating with a respective signal generating device of said second plurality of signal generating devices to substantially negate said signal component identified by said respective signal detecting device in a signal to a next-successive said signal detecting device in said series network.
6. A method reducing noise in a wireless communication station; said wireless communication station having an electromagnetic antenna device for effecting wireless communication during a first time interval; said wireless communication station effecting substantially no wireless communication during a second time interval; the method comprising:
(a) in no particular order:
(1) providing at least one signal detecting device coupled with said antenna;
(2) providing at least one signal generating device coupled with said at least one signal detecting device; and
(3) providing a signal handling section coupled with said at least one signal generating device;
(b) operating said at least one signal detecting device to detect received
signals arriving at said antenna device during said second time
interval and identify at least one selected received signal component among said received signals having at least one predetermined characteristic;
(c) storing at least one signal parameter relating to said at least one selected received signal component;
(d) operating said at least one signal generating device using said at least one signal parameter to generate at least one compensating signal configured to substantially negate said at least one selected received signal component; and
(e) operating said signal handling section to combine said at least one compensating signal with signals received by said wireless communication station during said first time interval.

7. A method reducing noise in a wireless communication station as recited in Claim 6 wherein said at least one signal detecting device is a plurality of signal detecting devices coupled with said antenna device in a series network; each respective signal detecting device of said plurality of signal detecting devices cooperating with a respective signal generating device of said at least one signal generating device to substantially negate said signal component identified by said respective signal detecting device in a signal to a next-successive said signal detecting device in said series network.
8. A method reducing noise in a wireless communication station as recited in Claim 6 wherein said at least one signal detecting device is a first plurality of
signal detecting devices and wherein said at least one signal generating device is a second plurality of signal generating devices.
9. A method reducing noise in a wireless communication station as recited in Claim 8 wherein said first plurality equals said second plurality.
10. A method reducing noise in a wireless communication station as recited in Claim 9 wherein said first plurality of signal detecting devices is coupled with said antenna device in a series network; each respective signal detecting device of said first plurality of signal detecting devices cooperating with a respective signal generating device of said second plurality of signal generating devices to substantially negate said signal component identified by said respective signal detecting device in a signal to a next-successive said signal detecting device in said series network.
11 .An apparatus reducing noise in a wireless communication station; said wireless communication station having an electromagnetic antenna device for effecting wireless communication according to a published standard; said published standard establishing a first time interval for wirelessly communicating data and establishing a second time interval for effecting substantially no wireless data communication; the apparatus comprising:
(a) at least one signal detecting device coupled with said antenna device; said at least one signal detecting device detecting received signals arriving at said antenna device during said second time interval; said at least one signal detecting device identifying at least one selected received noise component among said received signals; said at least one signal detecting device storing at least one signal parameter relating to said at least one selected received noise component;
(b) at least one signal generating device coupled with said at least one
signal detecting device; said at least one signal generating device using said at least one signal parameter to generate at least one compensating signal; said at least one compensating signal being configured to substantially negate said at least one selected received noise component; and (c) a signal handling section coupled with said at least one signal
generating device; said signal handling section combining said at least one compensating signal with signals received by said wireless communication station during said first time interval.
12. An apparatus reducing noise in a wireless communication station as recited in Claim 11 wherein said at least one signal detecting device is a plurality of signal detecting devices coupled with said antenna device in a series network; each respective signal detecting device of said plurality of signal detecting devices cooperating with a respective signal generating device of said at least one signal generating device to substantially negate said signal component identified by said respective signal detecting device in a signal to a next-successive said signal detecting device in said series network.
13. An apparatus reducing noise in a wireless communication station as recited in Claim 11 wherein said at least one signal detecting device is a first plurality of signal detecting devices and wherein said at least one signal generating device is a second plurality of signal generating devices.
14. An apparatus reducing noise in a wireless communication station as recited in Claim 13 wherein said first plurality equals said second plurality.
15. An apparatus reducing noise in a wireless communication station as recited in Claim 14 wherein said first plurality of signal detecting devices is coupled with said antenna device in a series network; each respective signal
detecting device of said first plurality of signal detecting devices cooperating with a respective signal generating device of said second plurality of signal generating devices to substantially negate said signal component identified by said respective signal detecting device in a signal to a next-successive said signal detecting device in said series network.
16. A method reducing noise in a wireless communication station; said wireless communication station having an electromagnetic antenna device for effecting wireless communication according to a published standard; said published standard establishing a first time interval for wirelessly communicating data and establishing a second time interval for effecting substantially no wireless data communication; the method comprising:
(a) in no particular order:
(1) providing at least one signal detecting device coupled with said antenna;
(2) providing at least one signal generating device coupled with said at least one signal detecting device; and
(3) providing a signal handling section coupled with said at least one signal generating device;
(b) operating said at least one signal detecting device to detect received
signals arriving at said antenna device during said second time
interval and identify at least one selected received signal component among said received signals having at least one predetermined characteristic;
(c) storing at least one signal parameter relating to said at least one selected received signal component;
(d) operating said at least one signal generating device using said at least one signal parameter to generate at least one compensating signal configured to substantially negate said at least one selected received signal component; and
(e) operating said signal handling section to combine said at least one compensating signal with signals received by said wireless communication station during said first time interval.
17. A method reducing noise in a wireless communication station as recited in Claim 16 wherein said at least one signal detecting device is a plurality of signal detecting devices coupled with said antenna device in a series network; each respective signal detecting device of said plurality of signal detecting devices cooperating with a respective signal generating device of said at least one signal generating device to substantially negate said signal component identified by said respective signal detecting device in a signal to a next-successive said signal detecting device in said series network.
18. A method reducing noise in a wireless communication station as recited in Claim 16 wherein said at least one signal detecting device is a first plurality of signal detecting devices and wherein said at least one signal generating device is a second plurality of signal generating devices.
19. A method reducing noise in a wireless communication station as recited in Claim 18 wherein said first plurality equals said second plurality.
20. A method reducing noise in a wireless communication station as recited in Claim 19 wherein said first plurality of signal detecting devices is coupled with said antenna device in a series network; each respective signal detecting device of said first plurality of signal detecting devices cooperating with a respective signal generating device of said second plurality of signal generating devices to substantially negate said signal component identified by said respective signal detecting device in a signal to a next-successive said signal detecting device in said series network.