双边阈值补偿隐藏导频UWB系统信道估计新方法  

A New Bilateral Threshold Compensation Algorithm for UWB Hidden Pilot System Channel Estimation

作　　者：王丽娟[1] 王丹[1] 普杰信[1] 

机构地区：[1]河南科技大学,河南洛阳471003

出　　处：《电讯技术》2013年第4期509-513,共5页Telecommunication Engineering

基　　金：国家自然科学基金资助项目(61101167);航空科学基金项目(20110142002);河南省科技攻关计划项目(112102210431);河南科技大学博士科研启动基金资助项目(09001409);河南科技大学青年科学基金资助项目(2010QN0019)~~

摘　　要：在隐藏导频信道估计系统中,导频和数据叠加同时发送,造成接收端分离的导频信息中掺杂着数据成分,从而严重干扰信道估计,目前尚无针对这方面的解决方案,因此提出双边阈值补偿算法,该算法应用于发送端。发送数据经过双边阈值补偿算法处理后迫使数据均值为零,然后叠加导频信息并发送出去,接收端用传统的导频数据分离方法就可以得到高质量的导频信息,从而提高信道估计精度。仿真结果表明:和传统隐藏导频信道估计系统相比,在最小二乘和最小均方误差算法下信道估计精度和误码率方面均有明显改善。In the hidden pilot channel estimation system, the pilot and data are superimposed and simultaneously transmitted, the pilot information which has caused the receiver end separated, is mixed with data components so as to induce the channel estimation accuracy difference, now there is no solution for this regard, so the bilateral threshold compensation algorithm is proposed. This algorithm is applied in the sender data, the send data after bilateral threshold compensation algorithm processing force data with zero mean, then superimpose the pilot infor- mation and send out, the receiver end uses the traditional pilot data separation method to obtain high quality pi- lot information. Simulation results show that, compared with the traditional hidden pilot channel estimation sys- tem, the proposed method significantly improves the channel estimation, in the Least Squares（I_S） algorithm and Minimum Mean Square Error （MMSE） algorithm, channel estimation accuracy and error rate have significantly been improved.

关 键 词：多频带超宽带 隐藏导频 双边阈值补偿 信道估计 

分 类 号：TN911[电子电信—通信与信息系统]