SPC-APPM coded modulation for deep-space optical communications  

作　　者：郭建中 覃观凤 曾蕾 

机构地区：[1]School of Electronics Information,Wuhan Textile University

出　　处：《Optoelectronics Letters》2012年第4期306-309,共4页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.10477014);the Joint Found of Aeronautical Science and Technology

摘　　要：A coded modulation scheme for deep-space optical communications is proposed, which is composed of an outer single- parity-check （SPC）-based product code, an interleaver, a bit-accumulator and a pulse-position modulation （PPM）. It is referred as SPC-APPM code, which is decoded with an iterativc demodulator-decoder using standard turbo-decoding techniques. Investigations show that the scheme has the advantages of low encoding and decoding complexities, good performance and flexible code rate for all rates above I/2. Meanwhile, simulation results demonstrate that the SPC-APPM provides the performance similar to the low-density parity-check-APPM （LDPC-APPM）, superior to the LDPC-PPM and product accumulate code-PPM （PA-PPM）, although inferior to serially concatenated PPM （SCPPM）. At the bit error rate （BER） of 105, the performance of SPC-APPM is about 0.7 dB better than LDPC-PPM and 1.2 dB better than PA-PPM.

关 键 词：Concatenated codes Iterative decoding Optical communication 

分 类 号：TN929.1[电子电信—通信与信息系统] TN911.22[电子电信—信息与通信工程]