A Low Complexity Iterative Channel Estimation and Decoding Receiver Based on Reed-Solomon PTA

A low-complexity iterative channel estimation and Reed-Solomon (RS) decoding receiver is developed. The joint channel estimation and decoding receiver is based on the linear minimum mean square error (LMMSE) channel estimation technique and the recently proposed RS parity-check transformation algori...

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Bibliographic Details
Published in:IEEE access 2016, Vol.4, p.8805-8813
Main Authors: Ogundile, Olayinka O., Versfeld, Daniel J. J.
Format: Article
Language:English
Subjects:
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Algorithms
Channel estimation
Codes
Complexity
Computational efficiency
Computer simulation
Computing time
CSI
Decoding
Fading channels
Forward error correction
Iterative decoding
Iterative methods
iterative receivers
LMMSE
Quadrature amplitude modulation
Receivers
Time complexity
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Summary:A low-complexity iterative channel estimation and Reed-Solomon (RS) decoding receiver is developed. The joint channel estimation and decoding receiver is based on the linear minimum mean square error (LMMSE) channel estimation technique and the recently proposed RS parity-check transformation algorithm (PTA). A key feature of this joint receiver is the simple symbol remapping process used to refine the initial LMMSE estimate of the channel after each iterative RS-PTA decoding. The performance of the joint iterative receiver is compiled through computer simulation assuming a rectangular M-ary quadrature amplitude modulation as the underlying modulation scheme. Simulation results show significant symbol error rate (SER) improvement in the iterative receiver in comparison with the receiver without iterative feedback. Besides, the RS-PTA iterative receiver outperforms the recently proposed RS Koetter and Vardy (RS-KV) iterative receiver structure both in terms of the SER performance and the computational time complexity. Of particular interest, results verify that the computational time complexity of the RS-PTA iterative receiver can be reduced without compromising the SER performance of the receiver.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2016.2633285