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一种基于ML算法及盲信道识别的DWPM系统 被引量:1

A Novel DWPM System Based on ML Algorithm and Blind Channel Identification
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摘要 该文提出了一种基于ML算法及盲信道估计的离散小波包调制(DiscreteWaveletPacketModulation,DWPM)系统。本文通过基于导频信号的盲信道识别方法,获得信道的状态信息,并且利用基于ZF(ZeroForeing)算法的H矩阵消除码间干扰,最后,利用ML(MaximumLikelihood)算法检测解调后的码元,并且通过仿真分析了该系统在多径衰落信道下的性能。仿真结果表明,该系统的性能要比传统的OFDM系统的性能好。 A novel DWPM (Discrete Wavelet Packet Modulation) system with blind channel identification based on Maximum Likelihood (ML) algorithm is studied for multipath fading channel. The Channel State Information (CSI) is obtained with blind channel identification method and inter-symbol interference is suppressed by H matrix based on ZF (Zero Forcing) algorithm. Finally, the demodulated symbols are detected by ML algorithm. The performance of the system under the multipath fading channel is analyzed by simulation, The simulation results show the performance of the system is better than that of the traditional OFDM system.
出处 《电子与信息学报》 EI CSCD 北大核心 2005年第8期1254-1257,共4页 Journal of Electronics & Information Technology
基金 国家自然科学基金和微软亚洲研究院联合资助项目(60372048)高等学校优秀青年教师教学科研奖励计划国家自然科学基金重大项目(60496316)第6子课题教育部科学技术研究重点项目(104171)国家863计划重大项目(2001AA123031)资助课题
关键词 离散小波包调制 ML算法 盲识别 导频信号 DWPM, ML algorithm, Blind identification, Pilot
作者简介 周雷:男,1977年生,博士生,研究方向为移动通信与ad hoc网络. 李建东:男,1962年生,博士生导师,教授,研究方向为宽带无线IP技术、移动通信、软件无线电、ad hoe自组织网络等. 陈晨:男,1975年生,博士生,研究方向为移动通信与ad hoc网络. 李峰:男,1970年生,工学博士,现为中兴通讯股份有限公司技术中心西安研究所高级工程师.
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