【摘要】 研究了带有同信道干扰和协方差矩阵反馈的多输入多输出多天线系统遍历信道容量最优化问题.首先利用大数定理,对同信道干扰成分进行等效,通过梯度映射算法得出一种多天线系统遍历信道容量的最优估计算法,最后,仿真观察该最优估计算法的性能与性质.结果表明:该算法的性能在大干扰功率与信道相关性较强情况下接近最优的独立注水算法.更多还原

【Abstract】 The optimization of ergodic channel capacity is investigated for multipleinput multiple-output(MIMO)multiple antenna systems with co-channel interference when the covariance feedback is available at the transmitter.An equivalent form of the co-interference component is first derived.Then an optimal capacity estimation algorithm is proposed by performing gradient projection algorithm which is based on nonlinear programming theory.Finally,Monte-Carlo simulation is given.The numerical results show that the performance with the proposed algorithm is close to the optimal one which is obtained by water-filling algorithm when both the interference power and the correlation between antennas are strong.更多还原