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MC-CDMA系统中基于QR分解的多址干扰消除算法
引用本文:姜立国,曹叶文. MC-CDMA系统中基于QR分解的多址干扰消除算法[J]. 计算机工程与应用, 2009, 45(30): 88-91. DOI: 10.3778/j.issn.1002-8331.2009.30.026
作者姓名:姜立国  曹叶文
作者单位:山东大学,信息科学与工程学院,济南,250100;山东大学,信息科学与工程学院,济南,250100
基金项目:国家自然科学基金,山东省自然科学基金 
摘    要:多址干扰是导致MC-CDMA系统误码性能下降的重要因素。为了消除多址干扰,提出基于接收信号功率排序和QR分解的多址干扰消除算法(Power-based MMSE Sorted QR Decomposition,P-based MMSE-SQRD)对MC-CDMA系统的上行链路进行检测。仿真结果显示,与传统的串行干扰消除算法相比,P-based MMSE-SQRD的误码性能有明显的提高,而且其复杂度也相对较低。

关 键 词:多载波码分多址  QR分解  基于接收信号功率排序和QR分解的多址干扰消除算法
收稿时间:2008-06-10
修稿时间:2008-9-16 

Multi-access interference cancellation algorithm based on QR decomposition for MC-CD-MA systems
JIANG Li-guo,CAO Ye-wen. Multi-access interference cancellation algorithm based on QR decomposition for MC-CD-MA systems[J]. Computer Engineering and Applications, 2009, 45(30): 88-91. DOI: 10.3778/j.issn.1002-8331.2009.30.026
Authors:JIANG Li-guo  CAO Ye-wen
Affiliation:Department of Information Science and Technology,Shandong University,Jinan 250100,China
Abstract:In MC-CDMA uplink,Multi-Access Interference(MAI) is one of the major performance degradation factors.In this paper,a multi access interference cancellation algorithm based on received signal power ordering and QR decomposition is proposed.Simulation results show that,the proposed algorithm outperforms traditional successive interference cancellation algorithm in terms of Bit Error Rate(BER).Meanwhile,the complexity of the proposed algorithm is lower.
Keywords:Multi-Carrier Code Division Multiple Access(MC-CDMA)  QR decomposition  Power-based MMSE Sorted QR Decomposition(P-based MMSE-SQRD)
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