频率选择性慢衰落信道下的一种Rake接收技术  

A Rake Receive Technology under the Frequency Selective Slow Fading Channels

作　　者：张旭丽[1] 杜栓义[1] 邱长兴[1] 

机构地区：[1]西安电子科技大学ISN国家重点实验室,陕西西安710071

出　　处：《电子科技》2008年第2期51-54,共4页Electronic Science and Technology

摘　　要：通过对无线通信信道传输特性的讨论,以瑞利信道和莱斯信道为模型,研究在QPSK扩频调制下接收端信号的同步、多径分离与按增益合并。仿真实现了频率选择性慢衰落信道下的一种Rake接收技术,结果表明用他来减小多径衰落是有效的。Based on a discussion of the transmission characteristics of wireless communication channels, this paper studies the synchronization, multipath separation and combination of the received signals in qpsk spread spectrum modulation through the construction of a raylrand and a rician model. The simulation of the rake reception under the frequency selective slow fading channels indicates that it is effective to counteract the muhipath fading.

关 键 词：多径分离 频率选择性 RAKE 

分 类 号：TN925[电子电信—通信与信息系统]