Experimental Evaluation of Turbo Receivers in Single-Input Single-Output Underwater Acoustic Channels
Abstract
This paper presents some experimental results on both the channel estimation based minimum mean square error Turbo equalizer (CE MMSE-TEQ) and the direct-adaptation turbo equalizer (DA-TEQ) in single-input single-output (SISO) underwater acoustic (UWA) channels. For CE MMSE-TEQ, we compare the soft-decision feedback Turbo equalizer (SDFE), the bidirectional soft-decision feedback Turbo equalizer (Bi-SDFE) and the classic linear Minimum Mean Square Error (MMSE) Turbo equalizer in terms of bit error rate (BER) performance. For DA-TEQ, the recently proposed soft-decision direct-adaptation TEQ (Soft DA-TEQ) is evaluated with the same set of experimental data. Both QPSK and multilevel modulations (8PSK and 16QAM) have been tested with the symbol rate of 9.77 ksymbols/s. Experimental results show that the CE-TEQs are more robust in SISO underwater acoustic transmission under harsh channel conditions. Especially, with low pilot overheads, the recently proposed Bi-SDFE achieved low BER performance in all cases.
Recommended Citation
W. Duan and Y. R. Zheng, "Experimental Evaluation of Turbo Receivers in Single-Input Single-Output Underwater Acoustic Channels," Proceedings of OCEANS 2016 MTS/IEEE Shanghai (2016, Shanghai, China), Institute of Electrical and Electronics Engineers (IEEE), Apr 2016.
The definitive version is available at https://doi.org/10.1109/OCEANSAP.2016.7485573
Meeting Name
OCEANS '16 MTS/IEEE Shanghai (2016, Apr. 10-13, Shanghai, China)
Department(s)
Electrical and Computer Engineering
Sponsor(s)
National Science Foundation (U.S.)
Keywords and Phrases
Adaptive systems; Bit error rate; Channel estimation; Equalizers; Error statistics; Errors; Fading channels; Mean square error; Signal receivers; Telecommunication repeaters; Bit error rate (BER) performance; Experimental evaluation; Linear minimum mean square errors; Minimum mean square errors; Single input single output; Turbo equalizations; Underwater acoustic channels; Underwater acoustic communications; Underwater acoustics; Single-Input Single-Output; Turbo equalization
International Standard Book Number (ISBN)
978-1-4673-9725-4
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2016 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
Publication Date
01 Apr 2016
Comments
This work is supported in part by the National Science Foundation grant ECCS1408316 of the United States.