室内多径环境下降低UWB接收机采样率的Turbo均衡方法  

Turbo equalization for reducing the UWB receiver's sample rate in the indoor multipath environment

作　　者：汪一鸣[1] 朱洪波[2] 

机构地区：[1]苏州大学电子信息学院,江苏苏州215021 [2]南京邮电大学无线通信与电磁兼容实验室,江苏南京210003

出　　处：《系统工程与电子技术》2008年第4期601-605,共5页Systems Engineering and Electronics

基　　金：国家自然科学基金资助课题(6043204060572075)

摘　　要：为改善UWB多用户接收机高速采样的困难和由此带来的大量数据的数字化处理,提出一种基于Turbo原理的UWB接收机联合优化方法。该方法首先根据室内信道特点设定均衡器长度,达到多径能量的合理捕获,其二通过计算编码数值自身的软信息,获得迭代所需的对数似然比,用于联合迭代优化均衡器的权值。仿真结果表明,在同样的误码率要求下,可以降低对UWB接收信号采样率的要求。In order to improve the high-speed sampling and induced huge data processing, a joint optimized method for UWB multiuser receivers based on the Turbo principle is provided. Firstly of all, by setting the register length of the equalizer according to the UWB indoor channel characteristics, the multipath energy can be t captured properly. Secondly, by resolving the problem of how to find the soft information needed by iterations, the adaptive weight values of the equalizer can be optimized jointly. The simulation results show that, with this method, the sample rate of the receiving signal is greatly reduced for certain bit error rate.

关 键 词：UWB多用户检测 TURBO原理 均衡 采样率 多径信道 

分 类 号：TN911[电子电信—通信与信息系统]