EQUALIZATION METHOD FOR A PARSIMONIOUS COMMUNICATION CHANNEL AND DEVICE IMPLEMENTING THE METHOD

摘要

A method for equalizing a signal comprising modulated symbols comprising a block of N received symbols comprises: demultiplexing the N received symbols by factor L to generate a predetermined number L of sub-blocks of symbols, each comprising a version of the N received symbols sub-sampled by factor L, the independent equalization of each sub-block using an identical equalization algorithm, multiplexing the equalized symbols of each sub-block to obtain a block of N equalized symbols, removing instances of interference linked to paths other than two paths of higher power comprising generating an interference term resulting from the influence, on the equalized symbols, of all paths of the channel having the impulse response of the transmission channel except two paths of higher power, subtracting the interference term from the symbols of the block of N received symbols, and, a second equalization step equal to a second iteration of the first equalization step.

主权项

1. A method for equalizing a signal comprising a plurality of modulated symbols, said signal being transmitted by a sender, through a transmission channel, to a receiver, said method comprising the following steps that are applied to a block of N received symbols:
a first step of equalizing said block comprising:
the demultiplexing of the N received symbols by a factor L so as to generate a predetermined number L of sub-blocks of symbols, each comprising a version of said block of N received symbols that is sub-sampled by a factor L,the independent equalization of each sub-block using an identical equalization algorithm,the multiplexing of the equalized symbols of each sub-block in order to obtain a block of N equalized symbols, a step of removing instances of interference that are linked to paths other than the two paths of higher power comprising:
the generation of an interference term resulting from the influence, on said equalized symbols, of all of the paths of the channel having the impulse response of the transmission channel except the two paths of higher power,the subtraction of said interference term from the symbols of the block of N received symbols, a second equalization step equal to a second iteration of the first equalization step.