判决反馈平均的UWB自相关接收机

应用科学学报 ›› 2009, Vol. 27 ›› Issue (4): 337-342.

判决反馈平均的UWB自相关接收机

王峰徐澄圻张孝友

1. 南京邮电大学通信与信息工程学院，南京210003
2. 河南科技大学车辆与动力工程学院，河南洛阳471003

收稿日期:2008-12-16 修回日期:2009-05-19 出版日期:2009-07-30 发布日期:2009-07-30
作者简介:王峰，博士生，研究方向：超宽带无线通信调制技术、信道估计、自相关接收机和多用户检测技术，E-mail: wangfeng1978@163.com；徐澄圻，教授，博导，研究方向：现代通信中的信号与信息处理、数据压缩和信息传输，E-mail: xucq@njupt.edu.cn
基金资助:
国家自然科学基金(No.69872016)资助项目

UWB Autocorrelation Receiver Based on Decision Feedback Average

1．College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications,Nanjing 210003, China
2．College of Vehicle and Motive Power Engineering, Henan University of Science and Technology, Luoyang 471003,
Henan Province, China

Received:2008-12-16 Revised:2009-05-19 Online:2009-07-30 Published:2009-07-30

摘要/Abstract

摘要：

利用已判决符号和它们相应的接收信号构造解调用的模板信号，给出一种基于判决反馈平均的UWB自相关接收机结构，分析该接收机在可分辨多径信道中的理论误码率性能，给出误码率较低时的性能上界. 仿真结果表明，判决反馈平均自相关接收机的性能明显优于传统发送参考、差分发送参考和平均发送参考自相关接收机，且判决反馈平均自相关接收机可以通过增加反馈符号数来改善其性能.

Abstract:

This paper utilizes the decided symbols and their corresponding received signals to devise a reference signal for demodulation, and presents a structure of UWB autocorrelation receiver based on the decision feedback average (DFA). Theoretical performance of DFA autocorrelation receiver is analyzed in a resolvable multipath channel. Its upper bound is given for low bit error rate (BER). Simulation results verify that the performance of DFA autocorrelation receiver is superior to autocorrelation receivers with conventional transmitted reference, differential transmitted reference, and average transmitted reference. The DFA autocorrelation receiver can be improved by increasing the number of feedback symbols.

Key words: autocorrelation receiver, decision feedback average (DFA), conventional transmitted reference (CTR),
average transmitted reference (ATR), differential transmitted reference (DTR)

中图分类号:

TN973.3

王峰徐澄圻张孝友. 判决反馈平均的UWB自相关接收机[J]. 应用科学学报, 2009, 27(4): 337-342.

WANG Feng1, XU Cheng-qi1, ZHANG Xiao-you2. UWB Autocorrelation Receiver Based on Decision Feedback Average[J]. Journal of Applied Sciences, 2009, 27(4): 337-342.