Rateless Coding on Experimental Temporally Correlated FSO Channels

作     者：Anguita, Jaime A. Neifeld, Mark A. Hildner, Bjoern Vasic, Bane 

作者机构：Univ Los Andes Coll Engn & Appl Sci Santiago 7620001 Chile Univ Arizona Dept Elect & Comp Engn Tucson AZ 85719 USA Univ Arizona Coll Opt Sci Tucson AZ 85719 USA 

出 版 物：《JOURNAL OF LIGHTWAVE TECHNOLOGY》 (J Lightwave Technol)

年 卷 期：2010年第28卷第7期

页      面：990-1002页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 08[工学] 0702[理学-物理学] 

基　　金：Chilean Science and Technology Commission [Fondecyt 1090709] 

主　　题：Atmospheric turbulence error-correction coding free-space optical (FSO) communication laser applications optical communication rateless coding soft decoding time-varying channels 

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.