一种更长周期m序列的实现方法

m序列即最长线性反馈移位寄存器序列，其随机特性与白噪声特性最为接近，是一种常用的信号形式，在信号分析和信号处理中具有重要的价值。为了产生随机性能良好的伪随机序列，进而生成较为理想的白噪声信号，满足一般通信系统的测试要求，文中从m序列的原理和构造方法出发，应用周期性变更线性反馈移位寄存器的反馈连接和初始状态的方法，提出了一种基于VHDL生成的具有更长周期m序列的新方案。给出了原理分析、系统设计及算法的仿真结果。

A Method for Generation of Longer-period m-sequence

The m-sequence is the name for the mostly used signal forms and is widely used the closest to white noise. In order to get good the longest linear feedback shift register sequence. It is one of in digital signal processing and analysis. Its random nature is performance of pseudo-random sequence white noise signal to meet the general communications system testing requirements, this and generate an ideal paper uses the principie and construction method of the m-sequence as the basis, then applies periodical changes of linear feedback shift register ＇ s feedback connection and original m-sequence based on VHDL. The analysis of state to suggest a new generation method of longer - period design principle, block diagram and simulated results are presented.