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提出了一种新的基于MIMO信道的闭环系统,该系统是将旋转矩阵和注水原理相结合的一种闭环V-BLAST系统。旋转矩阵可以增加系统的发射分集度,从而有效提高系统性能;注水原理是当发射端已知信道信息时的一种最优的功率分配算法,它可以大大提高系统的频谱利用率。分析与仿真结果表明,该系统具有较高的频谱利用率和较好的误比特性能。
A new closed-loop system based on MIMO channel is proposed, which is a closed-loop V-BLAST system which combines the rotation matrix and the water injection principle. The rotation matrix can increase the transmit diversity of the system and improve the system performance effectively. The waterflooding principle is an optimal power allocation algorithm when the transmitter knows the channel information, which can greatly improve the system spectrum utilization. The analysis and simulation results show that the system has high spectral efficiency and better error bit performance.