WCDMA移动终端用RAKE接收机结构与实现  

A RAKE Receiver Architecture and Implementation for WCDMA Mobile Terminals

作　　者：李科祥[1] 宋国文[2] 

机构地区：[1]信息工程大学通信工程系,河南郑州450002 [2]西南电子电信技术研究所上海分所,上海200434

出　　处：《电讯技术》2003年第6期37-40,共4页Telecommunication Engineering

摘　　要：针对WCDMAFDD下行链路,提出了一种接收机结构。与传统接收机不同,该结构是根据多径来拉动(延时)输入信号,即根据多径把各径的信号延时对齐,而本地码的相位只需一个,来对多径支路解扩,并直接合并输出。该结构可进一步通过串行方法实现,大大减少硬件资源。由于采用全硬件技术,因此,便于ASIC集成。A novel RAKE receiver architecture is presented, and its implementations for WCDMA FDD downlink reception are discussed.In contrast to conventional RAKE receivers, this structure delays the input signals by multipaths. Namely, the signal delays are uniformed by multi paths.So one can use just only one of the local code phase to despread multipath signals, and combines the despreaded results directly. The structure can be achieved by serial methods to reduce the hardware demand. It is convenient to integrate the RAKE receiver on ASIC.

关 键 词：WCDMA RAKE接收机 多径延时 ASIC 

分 类 号：TN929.533[电子电信—通信与信息系统] TN85[电子电信—信息与通信工程]