Rateless Coding on Experimental Temporally Correlated FSO Channels

被引：46

作者：

Anguita, Jaime A. ^{[1
]}

Neifeld, Mark A. ^{[2
,3
]}

Hildner, Bjoern ^{[2
]}

Vasic, Bane ^{[2
]}

机构：

[1] Univ Los Andes, Coll Engn & Appl Sci, Santiago 7620001, Chile

[2] Univ Arizona, Dept Elect & Comp Engn, Tucson, AZ 85719 USA

[3] Univ Arizona, Coll Opt Sci, Tucson, AZ 85719 USA

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2010年 / 28卷 / 07期

关键词：

Atmospheric turbulence; error-correction coding; free-space optical (FSO) communication; laser applications; optical communication; rateless coding; soft decoding; time-varying channels; ATMOSPHERIC-TURBULENCE CHANNELS; SPACE OPTICAL COMMUNICATION; PARITY-CHECK CODES; COHERENT GAUSSIAN-BEAM; SCINTILLATION REDUCTION; PROBABILITY DENSITY; WIRELESS LINKS; TRANSMISSION; PERFORMANCE; DIVERSITY;

D O I：

10.1109/JLT.2010.2040136

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present a demonstration of two error-correction coding schemes that can successfully operate on a free-space optical (FSO) communication channel subject to atmospheric turbulence. The codes (a puntured Low-density parity-check code and a Raptor code) operate by continuously adapting the information rate to accommodate the varying channel conditions. Because these coding schemes require the use of a feedback channel, we evaluate the bandwidth cost incurred. The evaluation of the codes is performed offline and uses experimental optical signals recorded from an FSO link. We analyze the temporal characteristics of the experimental channels and compare the performance of the codes for different bit rates to asses the effect of temporal correlation and imperfect channel state information.

引用

页码：990 / 1002

页数：13

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