Performance of Complex Orthogonal Wavelet Packet Based MC-CDMA System with Space-Time Coding over Rayleigh Fading Channel

2009 IITA International Conference on Control, Automation and Systems Engineering (case 2009) Pub Date : 2009-07-11 DOI:10.1109/CASE.2009.105

Xiangbin Yu, G. Bi

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引用次数: 8

Abstract

Space-time coding technique and Multi-carrier CDMA (MC-CDMA) technique have been research hotspots due to their high frequency spectrum efficiency and high data rata transmission. On the basis of analyzing the two technique principle, by the use of the optimized complex orthogonal wavelet packet and space-time coding technique, we propose a complex orthogonal wavelet packet based MC-CDMA system with space-time coding, and investigate the system bit error rate performance over Rayleigh fading channel. Theoretical analysis and simulation results show that the proposed complex wavelet packet based MC-CDMA (CWP-MC-CDMA) system outperforms conventional MC-CDMA system and it is slightly superior to the conventional MC-CDMA with cyclic prefix (CP). Without any CP, the system has much higher spectrum efficiency. Especially, the application of space-time coding technique significantly improves the system ability to combat channel fading and various interference. Moreover, the space-time coded CWP-MC-CDMA system has comparative superiority to space-time coded MC-CDMA with CP.

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基于复正交小波包的瑞利衰落信道空时编码MC-CDMA系统性能研究

空时编码技术和多载波码分多址(MC-CDMA)技术因其频谱效率高、传输速率高而成为研究热点。在分析两种技术原理的基础上，利用优化后的复正交小波包和空时编码技术，提出了一种基于复正交小波包的空时编码MC-CDMA系统，并对系统在瑞利衰落信道下的误码率性能进行了研究。理论分析和仿真结果表明，基于复合小波包的MC-CDMA (CWP-MC-CDMA)系统优于传统的MC-CDMA系统，略优于传统的循环前缀MC-CDMA系统。在没有任何CP的情况下，系统具有更高的频谱效率。特别是空时编码技术的应用，大大提高了系统抗信道衰落和各种干扰的能力。此外，空时编码CWP-MC-CDMA系统比带CP的空时编码MC-CDMA系统具有相对优势。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2009 IITA International Conference on Control, Automation and Systems Engineering (case 2009)

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