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Nakagami衰落信道上MIMO WCDMA系统的MQAM性能分析

Performance Analysis of MQAM for MIMO WCDMA Systems in Nakagami Fading Channels
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摘要 日益增长的无线业务需求要求提高衰落信道上无线通信的频谱利用率。本文利用Q2(x)的另一种数学表达式和矩生成函数推导了Nakagami-m衰落信道上多输入多输出(MI-MO)WCDMA系统采用M进制正交幅度调制(MQAM)的平均误符号率(ASER)表达式,分析框架可以推广到开环和闭环系统发射和接收天线为任意数目的应用场合,研究了存在多址干扰下MIMOWCDMA系统的平均误符号率性能,数值计算结果表明组合发送分集和接收分集可以显著改善系统的性能。 The growing demand for wireless services has created the need for improving the spectral efficiency of wireless communications over fading channels. The expression of average symbol error rate(ASER) of MQAM for Multiple-input-multiple-output(MIMO) WCDMA systems in Nakagami-m fading channels is derived by the moment generating function(MGF) and alternative representation of Q 2(x). The analytical framework developed can handle an arbitrary number of transmit and receive antennas in both open loop and close loop systems,as well as the study on the ASER performance of MIMO WCDMA systems under the condition of multiple access interference. Numerical results show the system can achieve performance improved by combined transmit and receive antenna diversity.
作者 徐福永 李光球
机构地区 杭州电子科技大学通信工程学院
出处 《无线通信技术》 2005年第2期1-4,10,共5页 Wireless Communication Technology
基金 教育部<高等学校骨干教师资助计划>资助项目。
关键词 多输入多输出系统 正交幅度调制 多址干扰 开环最大比合并 闭环最大比合并 MQAM性能 衰落信道 multiple-input-multiple-output systems quadrature amplitude modulation multiple access interference(MAI) open loop maximum-ratio combining close loop maximum-ratio combining
分类号 TN911 [电子电信—通信与信息系统] TN92 [电子电信—通信与信息系统]
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参考文献9

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共引文献6

无线通信技术
2005年 第2期

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