A new coherent code tracking loop for wideband CDMA systems

• Main Author: 吳培慎
• Other Authors: 沈文和
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/33811236118487036909

碩士 === 國立中正大學 === 電機工程研究所 === 88 === In this paper we present a new coherent code tracking loop suited for chip timing synchronization in wideband CDMA systems, and we completely analyze its performance in detail. The key feature of this new scheme is by its optimal performance by applying Maximum-likelihood Estimation . both analysis and simulation results are included here. Following that, we propose a method implement channel cancellation while communicating under multipath fading channel. And it is proved that, by analysis and simulation results both, it helps a lot on the tracking performance for both the new tracking loop above and Delay Lock Loop.