Simulation and Performance Analysis of Non-coherent M-ary Orthogonal Modulation in DS-CDMA system over Multipath Fading Channel

• Main Author: 楊世國
• Other Authors: 蔡木金
• Format: Others
• Language: en_US
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/51007209105739626577

碩士 === 國立中央大學 === 電機工程研究所 === 87 === In this paper, we analyze the performance of the M-ary orthogonal Modulation by evaluating the cross-correlation parameter. It shows the Multiple Access Interference (MAI) reduction due to M-ary orthogonal Modulation compared with the case without orthogonal modulation. Then, we study the performance in the Rayleigh selective condition and the effects of inherent diversity property and the number of branch of RAKE receiver. Finally, we obtain results by Mote-Carlo simulation. We also investigate the channel modeled as first order Gaussian-Markov process. Hence, the channel parameter may be estimated by adopting a similar form of Kilman filter. The result of parallel interference cancellation (PIC) technique with the estimation technique is also considered and simulated. The simulation results, show better improvement of system performance using channel estimation technique and PIC.