摘要
光PPM无线通信利用时间位置传递信息,时间定时要求极为严格。实际通信系统双方定时误差造成信号取样值的下降及码间串扰的增加。针对这一问题提出了一种新的RS-GRAY-PPM级联编码方式对系统加以改进。仿真结果表明,基于RS-GRAY-PPM级联编码相比PPM直接检测系统具有较好纠错和抗干扰能力,有效克服了由于非理想同步带来的定时误差影响。
The optical PPM wireless communication by the time pulse position information requires extremely accurate timing. Sampling signal degradation and serious code interference caused by imperfect synchnous between both commnication system.A new cascade encoding （RS-GRAY-PPM） scheme is provided to improve the system performance for this reason. Compared with the direct detection PPM system, simulation results show that （RS-GRAY-PPM） cascade coding scheme has better error correction ability and anti-jamming capability because it effectively overcome the imperfect timing impact due to non-ideal synchronization.
出处
《广西通信技术》
2013年第2期9-12,16,共5页
Guangxi Communication Technology
