METHOD FOR INCREASING THE NOISE IMMUNITY OF RECEIVING OFDM SIGNALS IN CHANNELS WITH MEMORY AND FAST FADING Russian patent published in 2022 - IPC H04J11/00 

FIELD: communications technology.

SUBSTANCE: invention relates to communication technology and can be used in mobile communication systems in which orthogonal frequency multiplexing is required. A pilot signal is inserted into each OFDM symbol in the transmitting device, while a sequence of samples of the pilot signal envelope formed by means of a parallel-sequential conversion, the length of which is selected so that the time scattering interval at a given transmission rate provides measuring all samples of the impulse response, is subjected to the FFT operation separately from the samples of the OFDM symbol information sequence envelope, and on the receiving side, according to the sequence of samples of the envelope of the pilot signal with a known information content, the pulse response samples are measured, after which, in the sequence of samples of the envelope of the information symbol, the signals of inter-symbol interference are compensated.

EFFECT: increase in the noise immunity of receiving OFDM signals in channels with memory and fast fading.

1 cl, 5 dwg