Hybrid Reference Signal With Low Papr For Dft S Ofdm

Abstract: The invention relates to a method for transmitting at least a group of Kd data samples in a radio signal to be transmitted over a communication system, said radio signal being intended to be emitted by an emitter comprising at least one transmission antenna, said radio signal being provided by: determining a first position J1 and a second position J2 in a block of K samples; applying a DFT-spread-OFDM-type scheme to the block of K samples A = (A0;...; AK1), and obtaining an output signal representing a symbol comprising N complex samples Sn in the radio signal, with n = 0 to N-1; determining, in the output signal, a first position T1 and a second position T2 such that: J1=floor(T1xK/N); J2=ceil(T2xK/N); T2-T1=R, with R being a strictly positive integer; inserting, between the first position T1 and the second position T2 of the updated output signal, S reference samples and L cyclic prefix samples, with L being a positive or null integer, S being a strictly positive integer and R=S+L, to obtain a subsequent signal representing a hybrid symbol comprising a data section and a reference section; appending, to the hybrid symbol, a cyclic prefix of at least part of the hybrid symbol to obtain a signal representing the hybrid symbol appended with the cyclic prefix; and emitting the radio signal corresponding to the signal representing the hybrid symbol appended with the cyclic prefix.

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