Low complexity iterative method of signal detection in OFDM doubly selective channels

Sajid Ahmed*, Mathini Sellathurai, Sangarapillai Lambotharan, Jonathon Chambers

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Time selectivity of the channel causes inter-carrier interference (ICI) in orthogonal frequency division multiplexing (OFDM), thereby degrading the system performance significantly and increasing the computational complexity of the receiver. On the other hand, time selectivity introduces temporal diversity that can be exploited to improve the performance of the receiver. In this work, a new method is presented to compensate for the effects of time selectivity of the channel that exploits the sparsity present in the channel convolution matrix (CCM). Here, working with time and frequency domain samples, a low complexity iterative algorithm is proposed. Simulation results show the superior performance over the standard linear minimum mean square error (L-MMSE) equalizer with the advantage of computational saving and temporal diversity gain.

Original languageEnglish (US)
Title of host publication13th European Signal Processing Conference, EUSIPCO 2005
Pages2167-2170
Number of pages4
StatePublished - Dec 1 2005
Event13th European Signal Processing Conference, EUSIPCO 2005 - Antalya, Turkey
Duration: Sep 4 2005Sep 8 2005

Publication series

Name13th European Signal Processing Conference, EUSIPCO 2005

Other

Other13th European Signal Processing Conference, EUSIPCO 2005
CountryTurkey
CityAntalya
Period09/4/0509/8/05

ASJC Scopus subject areas

  • Signal Processing

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