高速PRBS的设计和实现

Design and Realize of High Speed PRBS

伪随机二进制序列(PRBS)越来越受到人们的重视,被广泛应用于导弹、卫星、飞船轨道测量和跟踪、雷达、导航、移动通信、保密通信和通信系统性能的测量以及数字信息处理系统中。M序列是伪随机二进制序列中,带线性反馈移位寄存器的周期最长的一种基本序列。高速PRBS广泛用于高速通信系统中。高速PRBS由于速率较高,直接产生难度较大。本文首先分析M序列的基本原理、结构、性质,然后提出由四路并行的PRBS产生高速PRBS的设计想法,最后实现了四路并行的PRBS。

Pseudo random Binary Sequence （PRBS） is more and more attractive than ever before. It is widely used in the orbit measuring and tracing of guided missile,satellite and airship. The performance measurement of system such as radar,common commu- nication,secrecy communication and communication system is also used in the systemof digital signal processing （DSP）. The M sequence is a kind of pseudo random code and the longest period sequence. It is generated by LFSR. High speed PRBS is wildly used in high speed communication system.The rate of the high speed PRBS is high.so being genarated directly is difficult.Moreover, this paper first analyzes the basic principle and properties of M sequence. Later we give out the designing of high speed PRBS by four-track PRBS. Further more we carry out four-track PRBS.