Proceedings of the 2017 International Conference on Electronic Industry and Automation (EIA 2017)

An Improved Zero-Forcing Detection Algorithm of Spread OFDM for Underwater Acoustic Communications

Authors
Ke WANG, Leiyu SHI, Wei LIU, Jing LEI
Corresponding Author
Ke WANG
Available Online July 2017.
DOI
https://doi.org/10.2991/eia-17.2017.83How to use a DOI?
Keywords
OFDM; underwater acoustic communication; Walsh-Hadamard (WH); zero force; minimum mean square error
Abstract

The so-called spread OFDM(S-OFDM) system is designed to resist frequency-dependent attenuation by using Walsh-Hadamard (WH) code for spreading the frequency-domain OFDM symbols in the transmitter, and linear detectors, like ZF or MMSE, are usually used to recover the signals in the receiver. In this paper, an improved ZF detection algorithm is proposed for reducing the problem of amplifying noise compared with common ZF algorithm for spread OFDM in underwater acoustic channels. In contrast to the MMSE, the proposed algorithm dose not require estimating the variance of noise. Simulation results show that the proposed ZF algorithm has much better performance than that of common ZF method in all SNR range. Even if compared with MMSE, the proposed algorithm also gets much performance gain in high SNR range.

Copyright
© 2017, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 2017 International Conference on Electronic Industry and Automation (EIA 2017)
Series
Advances in Intelligent Systems Research
Publication Date
July 2017
ISBN
10.2991/eia-17.2017.83
ISSN
1951-6851
DOI
https://doi.org/10.2991/eia-17.2017.83How to use a DOI?
Copyright
© 2017, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Ke WANG
AU  - Leiyu SHI
AU  - Wei LIU
AU  - Jing LEI
PY  - 2017/07
DA  - 2017/07
TI  - An Improved Zero-Forcing Detection Algorithm of Spread OFDM for Underwater Acoustic Communications
BT  - Proceedings of the 2017 International Conference on Electronic Industry and Automation (EIA 2017)
PB  - Atlantis Press
SP  - 387
EP  - 392
SN  - 1951-6851
UR  - https://doi.org/10.2991/eia-17.2017.83
DO  - https://doi.org/10.2991/eia-17.2017.83
ID  - WANG2017/07
ER  -