Multipath correlations in underwater acoustic communication channels

被引：22

作者：

Huang, S. H. ^{[1
]}

Yang, T. C. ^{[2
]}

Huang, Chen-Fen ^{[3
]}

机构：

[1] Natl Taiwan Univ, Dept Engn Sci & Ocean Engn, Taipei 10764, Taiwan

[2] Natl Sun Yat Sen Univ, Inst Appl Marine Phys & Undersea Technol, Kaohsiung 80424, Taiwan

[3] Natl Taiwan Univ, Inst Oceanog, Taipei 10764, Taiwan

来源：

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 2013年 / 133卷 / 04期

关键词：

D O I：

10.1121/1.4792151

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Uncorrelated scattering (US), which assumes that multipath arrivals undergo uncorrelated scattering and are thus uncorrelated, has been the standard model for digital communications including underwater acoustic communications. This paper examines the cross-correlation of multipath arrivals based on at-sea data with different temporal coherence time, assuming quasi-stationary statistics. It is found that multipath arrivals are highly cross-correlated when the channel is temporally coherent, and are uncorrelated when the channel is temporally incoherent. A theoretical model based on the path phase rates and relative-phase fluctuations is used to explain experimentally observed phenomena, assuming the path amplitudes vary slowly compared with the phases. The implications of correlated scattering for underwater acoustic communication channel tracking are discussed. (C) 2013 Acoustical Society of America.

引用

页码：2180 / 2190

页数：11

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