Focusing on the problem that the detection complexity was high in vertical-Bell labs layered space-time system,a novel simplified maximum likelihood algorithm was proposed.
针对贝尔实验室垂直分层空时系统最大似然检测复杂度过高的问题,提出一种简化最大似然算法。
In vertical-Bell laboratory layered space-time(V-BLAST) systems,the detection of received signal needs rich scattering channel environment,otherwise the system bit error rate(BER) performance descends seriously.
研究了天线选择,提出了一种基于垂直-贝尔实验室分层空时结构(V-BLAST)与正交频分复用(OFDM)相结合的系统的发送天线选择算法,使选用的发送天线组合对所有子载波的最小信号噪声干扰比(SNIR)最大化,以较好地解决V-BLAST系统检测要求信道的无线环境中有丰富的散射体,否则会严重恶化系统误比特率性能的问题。
A bit loading and power allocation algorithm with low complexity in adaptive modulation for vertical-Bell laboratory layered space-time systems was proposed to implement the rate maximization,satisfying peak power constraint on each antenna as well as the average total power limit.
提出了一种自适应调制垂直-贝尔实验室分层空时结构(V-BLAST)系统的低复杂度比特、功率分配算法,满足总平均功率和单根发射天线峰值功率受限条件下使比特率最大化。