多脉冲位置调制系统中定时误差的误码影响分析  

Analysis of MPPM Performance with Imperfect Slot Synchronization in Laser Communication

作　　者：易淼[1,2] 李天松[1] 孙丽华[1] 

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004 [2]宜春学院理工学院,江西宜春336000

出　　处：《科技广场》2008年第8期43-45,共3页Science Mosaic

摘　　要：MPPM与PPM相比具有能量信息效率高和带宽低的优点,是激光通信系统中一种有效的通信方式。文章通过理论计算提出了当有定时误差时,(m,2)MPPM具有最小误符号概率的映射列表的设计方法,并且在相同的传输带宽和传输速率下,比较了(m,2)MPPM和PPM的误比特概率。结果表明(m,2)MPPM的性能优于PPM。Compared with PPM, MPPM has the performance of high efficiency and low bandwidth, it is an effective means of communication in laser communication. In this paper, （m, 2） MPPM performance with imperfect slot synchronization performance is analyzed.The optimum symbol error sets of （m,2）MPPM minimizing symbol error probability in the presence of timing error has been assigned,and the bit error probability of （m,2） MPPM is evaluated.Bit error probability of （m,2）MPPM is compared with that of PPM at the same transmission bandwidth and transmission rate.It is found that （m,2） MPPM performs better than PPM.

关 键 词：MPPM 定时误差 激光通信 

分 类 号：TN914.31[电子电信—通信与信息系统]