Method and apparatus for adaptive equalisation using particle swarm optimization for uplink SC-FDMA

摘要

A method and apparatus are provided for channel equalization in a communication system. The channel equalization method includes calculating, using processing circuitry, filter coefficients of an adaptive equalizer in a frequency domain using particle swarm optimization (PSO) and filtering the signal using the computed filter coefficients.

主权项

1. A method for channel equalization in a communication system comprising:
receiving, by a receiver, a signal; demapping, using processing circuitry, the signal; calculating, using the processing circuitry, filter coefficients of an adaptive equalizer in a frequency domain using particle swarm optimization (PSO); and filtering the signal using the computed filter coefficients, wherein the adaptive equalizer is a linear equalizer, wherein computing the filter coefficients of the linear equalizer using PSO comprises minimizing a vector of cost function, wherein the vector of cost function is expressed as
Ek=Dk−{hacek over (X)}k where Dk=diag(FM({circumflex over (x)}k)), FM is a DFT matrix, and {hacek over (X)}k is the output of the equalizer.