匹配滤波器捕获同步的超宽带通信系统设计

Design of UWB Communication System Based on Capture Synchronized Matched Filter

针对并行结构的匹配滤波器捕获电路存在同步漏捕和计算精度不高等缺点,采用了串行匹配滤波器来实现突发同步捕获,对同步捕获中涉及的三角模板互相关选相特性、四积分器合成本地模板脉冲的原理进行分析研究。超宽带通信系统电路模型测试表明,通信系统在短距离收发测试过程中接收信号能很好地解调出同步序列,效果良好。

In view of the shortcomings of synchronous leakage capture and low calculation accuracy m the matched filter capture circuits based on parallel architecture, a serial matched filter is designed to achieve the sudden synchronous capture, and the triangular crosscorrelation characteristics of the election phase, the principle of the four integrators synthesizing the local pulse template in synchronous capture are studied. Tests of the ultra-wideband（UWB） communication system circuit model show that in the shortrange sending/receiving process the receiving signal of communications system can demodulate the synchronous sequence well and the effect is good.