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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。
Increasing demand for wireless services requires increasing the spectrum utilization of wireless communications over fading channels. In this paper, we use the other mathematical expressions of Q2 (x) and the moment generation function to deduce the average error of M-ary quadrature amplitude modulation (MQAM) for multi-input multiple output (MI-MO) WCDMA systems over Nakagami-m fading channels Symbol rate (ASER) expression, the analysis framework can be generalized to open-loop and closed-loop system transmit and receive antennas for any number of applications. The average symbol error rate performance of MIMOWCDMA systems with multiple access interferences is studied. The numerical results show that the combination Transmit diversity and receive diversity can significantly improve system performance.