Adaptive Correlator Receiver for Downlink Multicarrier DS-CDMA System

• Main Authors: Zheng-Hung Tsai, 蔡政弘
• Other Authors: Li-Der Jeng
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/c69wcf

碩士 === 中原大學 === 電子工程研究所 === 91 === In addition to additive White Gaussian Noise (AWGN), the system may suffer fromintersymbol interference(ISI), interchip interference(ICI) and multiple access interference(MAI). ISI and ICI were caused by multipath fading channel. In many researchof communication system, RAKE receiver has been proposed to combat multipath fading byusing the path divisity, howerever MAI was not consideredin this scheme. In other words, as users of the system increase, the performance ofsystem which used RAKE receiver will decay. In this paper, an adaptive correlator receiver for multicarrier direct sequence CDMA system is presented. The proposed scheme is capable of performing thefunctions of MAI-rejection, ISI/ICI suppression and data detection (code despreading) simultaneously. Simulation results show that the performance of the proposed receiver is batter than the existing RAKE receiver.