TD-SCDMA、GSM双模单待手机40位CRC的DSP算法  

DSP Algorithm for 40-bit CRC of TD-SCDMA and GSM Dual-mode Single-standby Mobile Phone

作　　者：戴大恩[1] 李小文[1] 

机构地区：[1]重庆邮电大学,重庆400065

出　　处：《信息安全与通信保密》2008年第7期45-47,共3页Information Security and Communications Privacy

摘　　要：循环冗余校验码在通信和计算机行业都有着非常广泛的应用,是一种可靠性极高的差错控制技术。文章介绍了在TD-SCDMA平台上实现GSM双模通信的关键技术之一:小区初搜过程中解调BCCH信道的40位CRC解调算法,并以DSP物理硬件实现为基础,详细介绍了40位的CRC的实现方法逐比特法和查表法。Cyclic Redundancy Check extensively used in telecommunications and computer industries, is a highly reliable error- control technique. This paper describes a key technique for implementing GSM in TD-SCDMA system, the algorithm for demodulating 40-bit CRC in BCCH channel in the process of Cell Search . And based on physical hardware implementation of DSP, it particularly tells of the bit-by-bit implementation method of40-bit-bit CRC, and then briefly presents Check-in-table method.

关 键 词：循环冗余校验 小区初搜 BCCH解凋 逐比特法 查表法 

分 类 号：TN929.53[电子电信—通信与信息系统]