V-BLAST系统的特征波束形成技术

针对特征波束形成技术与V-BLAST结合的系统,从最小化系统差错性能角度出发,在独立同分布衰落信道中和发射端已知信道均值矩阵信息的情况下,推导了特征波束形成的功率分配算法,同时设计了能够充分利用该功率分配方法的接收检测算法。仿真和分析表明,在发射端所知信道信息有限的情况下,该功率分配算法和排序检测算法能显著改善V-BLAST系统的性能,优于传统的V-BLAST检测算法。

Eigen-beamforming technique for V-BLAST systems

The combination of eigen-beamforming with V-BLAST system is discussed.A kind of algorithm of power allocation at V-BLAST transmitters is proposed.Such algorithm is based on the principle of minimizing transmitting errors when the channel is independent-identically distributed.At the same time,a suitable detecting algorithm is designed for the system.Through the simulation and analysis,when the transmitter has known part of the channel state information,the power allocation algorithm and ordering detecting algorithm introduced can obviously improve the performance of V-BLAST systems.