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。
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.
出处
《计算机工程与应用》
CSCD
北大核心
2009年第30期88-91,共4页
Computer Engineering and Applications
基金
国家自然科学基金 No.60872023
山东省自然科学基金No.Y2007G35~~