An all digital multiuser CDMA receiver and its ASIC design

• Main Authors: Chien-Chung Chio, 邱健忠
• Other Authors: Wen-Rong Wu
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/77055168245913359247

碩士 === 國立交通大學 === 電信工程系 === 89 === In recent years, a class of DS-CDMA schemes has been proposed as a major candidate for the next generation digital cellular system. It is known that the capacity of a CDMA system is interference limited. This problem can be alleviated by the so called multiuser detection (MUD). In this thesis, we propose an all digital CDMA receiver for MUD. We use a two-stage partial parallel interference cancellation (PIC) algorithm for MUD as well as for code tracking. It is shown that the detection and code tracking performance can be greatly enhanced using the proposed structure. Finally, the receiver is implemented using the VHDL with a fixed-point architecture.