移动通信中的分集接收技术和Rake接收机  

Diversity Receiving Technology in Mobile Communication and Rake Receiver

作　　者：孙广波[1] 

机构地区：[1]西安科技大学通信与信息工程学院,陕西西安710054

出　　处：《现代电子技术》2006年第15期7-8,共2页Modern Electronics Technique

摘　　要：由于移动环境的复杂性,无线信号在发送传输和接收过程中有很明显的衰落现象。通过分集接收技术在移动通信特别是第三代移动通信中的应用,介绍了传统Rake接收机和WCDMA中采用的典型Rake接收机的工作原理和结构框图。多径信号的每路信号都可能含有可以利用的信息,所以接收机可以通过接收多路信号来改善信噪比。Rake接收机算法就是通过多个相关接收器接收多径信号中各路信号,并把他们合并在一起,以此为原理基础的。Because of the complexity of mobile environment, wireless signal is fading in the process of transmission and receiving. According to application of diversity receiving in the third generation mobile communication, traditional Rake receiver and WCDMA which adopts typical Rake receiver＇s principle and frame structure are introduced. Because multi - path signal contains usefull information, the receiver can change SNR by receiving it. Rake receiver is based on receiving multi - path signal by multi - receiver.

关 键 词：分集接收 WCDMA RAKE 衰落信道 信道编码技术 

分 类 号：TN929.533[电子电信—通信与信息系统]