南京信息工程大学学报2017，Vol.9Issue(2)：192-196,5.DOI:10.13878/j.cnki.jnuist.2017.02.011
基于PPM硬判决的ARQ-FSO系统误码性能分析
Performance of ARQ-FSO system based on PPM hard decision in turbulence channel
摘要
Abstract
We present an ARQ-FSO system,which consists of pulse position modulation ( PPM) hard decision and a novel automatic repeat request (ARQ) protocol.Instead of traditional ARQ's data error detection,the PPM hard decision results are used to find data error. Then the transmitter only retransmits the failed decoded portion of the packet.These measures can eliminate the information redundancy of traditional ARQ and enhance the system effi-ciency.Theoretical analysis shows that the ARQ-FSO system can effectively improve the BER performance of the di-rect hard decision PPM system.Additionally,the proposed system significantly improves the average throughput effi-ciency compared with traditional ARQ systems.These characteristics make this ARQ-FSO system suitable to apply in low BER and low complexity FSO communications.关键词
无线光通信/脉冲位置调制/硬判决/自动重传请求Key words
free space optical ( FSO ) communications/pulse position modulation ( PPM )/hard decision decoding/automatic repeat request ( ARQ)分类
信息技术与安全科学引用本文复制引用
尹建军,刘宏展,黄蓉,高争光,韦中超..基于PPM硬判决的ARQ-FSO系统误码性能分析[J].南京信息工程大学学报,2017,9(2):192-196,5.基金项目
国家自然科学基金(61475049) （61475049）
国家重点基础研究发展计划(2013CB29204) （2013CB29204）
