An Improved MMSE Channel Estimator for Joint Coded-Precoded OFDM

Guomei ZHANG; Shihua ZHU; Shaopeng WANG; Feng LI

doi:10.1587/transcom.E92.B.2520

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An Improved MMSE Channel Estimator for Joint Coded-Precoded OFDM

Guomei ZHANG, Shihua ZHU, Shaopeng WANG, Feng LI

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Keywords: precoded OFDM, channel estimation, iterative decoding, MMSE estimation

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2009 Volume E92.B Issue 7 Pages 2520-2524

DOI https://doi.org/10.1587/transcom.E92.B.2520

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Abstract

An improved iterative minimum mean-squared error (MMSE) channel estimation method is proposed for joint coding and precoding OFDM systems. Compared with the traditional simplified estimator, the proposed scheme provides higher estimation quality with slight complexity increment at low signal-to-noise ratio (SNR) values. The performance of the iterative receiver including the proposed estimator approaches that of the perfect MMSE estimator without any simplification.

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