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本文使用矩生成函数方法推导了相关视距(LOS)分量和独立散射分量条件下的多输入多输出阴影Rician衰落信道上采用正交空时分组编码(OSTBC)的广义矩形M进制正交幅度调制(MQAM)的平均误符号率(SEP)的精确闭合表达式。利用该表达式可计算信道衰落参数以及天线间的相关性对广义矩形MQAM平均SEP性能的影响。数值计算结果阐明,天线间的相关性恶化了广义矩形MQAM的平均SEP性能,广义矩形MQAM的平均SEP性能随着信道衰落参数的增大而得到改善。
In this paper, we derive the generalized rectangular M-ary quadrature amplitude using Orthogonal Space-Time Block Coding (OSTBC) on the Rician fading channel for the correlated line-of-sight (LOS) component and the independent scatter component The exact closed-form expression for the mean symbol error rate (SEP) for a modulation (MQAM). This expression is used to calculate the effect of channel fading parameters and inter-antenna correlation on the average SEP performance of a generalized rectangular MQAM. The numerical results show that the correlation between antennas deteriorates the average SEP performance of generalized rectangular MQAM, and the average SEP performance of generalized rectangular MQAM improves with the increase of channel fading parameters.