摘要
对MIMO信道容量进行分析研究有助于未来4G网络的组建与优化.在假设信道系数不变的前提下,分别推导了发射端天线在等功率分配方案、波束成型条件及注水功率情况下的MI-MO信道容量.对以上三种功率分配方案在同一环境下通过计算机仿真进行了比较:在不额外增加发射功率的情况下,注水算法是最优的,但其运算复杂度较高;等功率分配方案信道容量在大信噪比的条件下比较理想.波束成型方案在低信噪比时接近最优情况.
The analysis and study on MIMO channels capacity is benificial to 4G network＇s construction and optimization.On the condition of invariable coefficient of channels,MIMO channel capacity is deduced when equal transmit energy scheme,beamforming condition and waterfilling power algorithm are applied respectively.The above three kinds of power allocation schemes are contrasted by computer simulation in the same entironment：In the instance of power not being added,waterfilling algorithm is optimal but too complex on the operation;channel capacity on equal transmit energy scheme is more perfect in high signal-to-noise;beamforming scheme is nearer to optimization in low signal.
出处
《哈尔滨理工大学学报》
CAS
北大核心
2010年第6期94-98,共5页
Journal of Harbin University of Science and Technology
基金
黑龙江省自然科学基金(200828)
