METHOD OF INCREASING THE IMMUNITY OF THE RECEIVING OFDM SIGNALS IN CHANNELS WITH MEMORY Russian patent published in 2017 - IPC H04J11/00 

Abstract RU 2618211 C2

FIELD: radio engineering, communication.

SUBSTANCE: signal from the transmitter after passing through the multipath propagation with additive noise is input to the receiving apparatus, from an analog input signal is allocated a sequence of samples of the envelope of the received sequence deleted samples of the guard interval, the remaining counts characterizing OFDM symbol after the serial-parallel conversion subjected fast Fourier transform, the result of which is a set of modulation symbols whose values x adjusted in phase and amplitude, and then converted into a sequence of data bits, characterized in that after the removal of guard interval samples is measured channel impulse response for transmit contained in the structure of transmitted signal to pilot symbols with known information content, and further on the measured impulse response, interference signals of intersymbol interference from the sequence of envelope samples are compensated.

EFFECT: increase noise immunity of the reception in the memory channels, the value of which exceeds the correcting ability of the guard interval.

4 dwg

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RU 2 618 211 C2

Authors

Kartashevskij Vyacheslav Grigorevich

Slipenchuk Kristina Sergeevna

Belskij Kirill Aleksandrovich

Dates

2017-05-03Published

2015-09-07Filed