IEEE802.11中Data域两种扰码方法的比较  

Comparison of two scrambler method in Data domain of IEEE802.11

作　　者：张睿[1] 邵朝[1] 

机构地区：[1]西安邮电大学通信与信息工程学院,陕西西安710121

出　　处：《西安邮电学院学报》2012年第4期48-51,共4页Journal of Xi'an Institute of Posts and Telecommunications

摘　　要：根据IEEE8021.1中自同步扰码方法和同步扰码方法的基本原理,对其传输性能进行理论分析和实验对比。结果表明,在相同的传输条件下,两者的扰码恢复性一致,扰码后的数据游程分布近似相同,但同步扰码方法相对于自同步扰码方法具有更低的误比特率,进而提高了系统的抗干扰能力。To study the advantages and weaknesses of different scramblers method deeply ,the transmission performances of self-synchronized scramblers and synchronous scramblers have been investigated by theoretical analysis and experimental comparison. Simulation results indicate that the recoverability of both scramblers are consistent, and the run-length distributions of scrambled data are approximatively the same. However, the bit error rate of synchronous scramblers is lower than that of self-synchronized scramblers, thus, the anti-interference ability of the system will be improved if the synchronous scramblers.

关 键 词：伪随机序列 线性移位寄存器 自同步扰码 同步扰码 

分 类 号：TN918.3[电子电信—通信与信息系统]