Design and Implementation of OFDM Acoustic Modem for Underwater Communication

被引：0
|
作者：
Hung, Hsien-Sen [1 ]
Wei, Chih-Ling [1 ]
Chiu, Linus [2 ]
Chen, Chi-Fang [3 ]
机构：
[1] Natl Taiwan Ocean Univ, Dept Elect Engn, Keelung, Taiwan
[2] Natl Sun Yat Sen Univ, Inst Undersea Technol, Kaohsiung, Taiwan
[3] Natl Taiwan Univ, Dept Syst Engn & Ocean Engn, Taipei, Taiwan
来源：
OCEANS 2014 - TAIPEI | 2014年
关键词：
orthogonal frequency division multiplexing (OFDM); multicarrier modulation; adaptive equalizer;
D O I：
暂无
中图分类号：
U6 [水路运输]; P75 [海洋工程];
学科分类号：
0814 ; 081505 ; 0824 ; 082401 ;
摘要：
This paper is aimed to develop a low-complexity receiver by treating Doppler rate (phase offset) as nuisance parameter in the hybrid channel estimation. For slowly changing channels, two simple adaptive equalization schemes, based on least squares (LS) and minimum mean-squared error (MMSE) principles, are proposed. For fast-changing channels, we adopt pilot-based channel estimation for equalization. We show the bit-error-rate (BER) performance of the OFDM detectors over a set of measured channel impulse responses in the northeastern sea of Taiwan. Simulation results reveal that adaptive equalizers and pilot-based equalizer can perform quite well in calm and fast-changing channel conditions respectively.
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页数：7
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