Performance Analysis of Parallel Interference Cancella tion for Multi-carrier DS-CDMA

作     者：XU Guo-xiong GAN Liang-cai HUANG Tian-xi 

作者机构：School of Electron. Inform. Zhongyuan University of Technology Zhengzhou 450007 CHN School of Electron. Inform. Wuhan University Wuhan 430079 CHN 

出 版 物：《Semiconductor Photonics and Technology》 (半导体光子学与技术（英文版）)

年 卷 期：2005年第11卷第3期

页      面：154-160页

学科分类：0810[工学-信息与通信工程] 08[工学] 081001[工学-通信与信息系统] 

基　　金：National Natural Science Foundation of China (60372056) 

主　　题：Multi-carrier DS-CDMA Parallel interference cancellation 

摘      要：The parallel interference c an cellation for multi-carrier DS-CDMA (which is termed FDC-PIC) is proposed by integrating frequency diversity combination. The simulations are made over FDC- PIC with respect to different decision ways——hard, soft and linear decisions, respectively, and we conclude that FDC-PIC acquires superior performance improv ement over correlation reception of multi-carrier DS CDMA. With an increase in interference cancellation stages, the system performance is improved further. Th e initial 2 stages bring about the most dominant performance improvement, but up to the 3rd stage the system performance is improved little. It is also shown by the simulation results that FDC-PIC with soft decision would exhibit the best performance with a high implementation complexity, while FDC-PIC with linear de cision acquires performance comparable to that of FDC-PIC with soft decision wi th a reduced-complexity if the number of the interference cancellation stages i s the same, which indicates that FDC-PIC with linear decision has optimal perfo rmance/complexity tradeoff and therefore will be suitable for practical applica tion in future.