Abstract
A low-complexity turbo detection scheme is proposed for single-carrier multiple-input multiple-output (MIMO) underwater acoustic (UWA) communications using low-density parity-check (LDPC) channel coding. The low complexity of the proposed detection algorithm is achieved in two aspects: first, the frequency-domain equalization technique is adopted, and it maintains a low complexity irrespective of the highly dispersive UWA channels; second, the computation of the soft equalizer output, in the form of extrinsic log-likelihood ratio, is performed with an approximating method, which further reduces the complexity. Moreover, attributed to the LDPC decoding, the turbo detection converges within only a few iterations. The proposed turbo detection scheme has been used for processing real-world data collected in two different undersea trials: WHOI09 and ACOMM09. Experimental results show that it provides robust detection for MIMO UWA communications with different modulations and different symbol rates, at different transmission ranges. Copyright © 2011 John Wiley & Sons, Ltd.
Recommended Citation
L. Wang et al., "Low-complexity Turbo Detection for Single-carrier Low-density Parity-check-coded Multiple-input Multiple-output Underwater Acoustic Communications," Wireless Communications and Mobile Computing, vol. 13, no. 4, pp. 439 - 450, Hindawi, Mar 2013.
The definitive version is available at https://doi.org/10.1002/wcm.1161
Department(s)
Electrical and Computer Engineering
Publication Status
Full Access
Keywords and Phrases
frequency-domain equalization; turbo detection; underwater acoustic communication
International Standard Serial Number (ISSN)
1530-8677; 1530-8669
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2024 The Authors, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution 4.0 License.
Publication Date
01 Mar 2013
