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Low-complexity iterative method of equalization for single carrier with cyclic prefix in doubly selective channels

Ahmed, S, Sellathurai, M, Lambotharan, S and Chambers, JA (2006) Low-complexity iterative method of equalization for single carrier with cyclic prefix in doubly selective channels IEEE Signal Processing Letters, 13 (1). pp. 5-8.

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Abstract

Orthogonal frequency division multiplexing (OFDM) requires an expensive linear amplifier at the transmitter due to its high peak-to-average power ratio (PAPR). Single carrier with cyclic prefix (SC-CP) is a closely related transmission scheme that possesses most of the benefits of OFDM but does not have the PAPR problem. Although in a multipath environment, SC-CP is very robust to frequency-selective fading, it is sensitive to the time-selective fading characteristics of the wireless channel that disturbs the orthogonality of the channel matrix (CM) and increases the computational complexity of the receiver. In this paper, we propose a time-domain low-complexity iterative algorithm to compensate for the effects of time selectivity of the channel that exploits the sparsity present in the channel convolution matrix. Simulation results show the superior performance of the proposed algorithm over the standard linear minimum mean-square error (L-MMSE) equalizer for SC-CP. © 2006 IEEE.

Item Type: Article
Authors :
NameEmailORCID
Ahmed, SUNSPECIFIEDUNSPECIFIED
Sellathurai, MUNSPECIFIEDUNSPECIFIED
Lambotharan, SUNSPECIFIEDUNSPECIFIED
Chambers, JAj.a.chambers@surrey.ac.ukUNSPECIFIED
Date : 1 January 2006
Identification Number : https://doi.org/10.1109/LSP.2005.860552
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:26
Last Modified : 17 May 2017 13:26
URI: http://epubs.surrey.ac.uk/id/eprint/839230

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