Stratified diagonal layered space-time architectures: signal processing and information theoretic aspects
Stratified diagonal layered space-time architectures: signal processing and information theoretic aspects
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分层对角分层时空架构：信号处理和信息论方面
DOI：
10.1109/tsp.2003.818199
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
G. Foschini
中科院分区：
文献类型：
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作者：
M. Sellathurai;G. Foschini
我们考虑使用 M 个发射天线和 N 个接收天线 [(M,N) 无线链路] 的多元件天线系统，该系统在准静态平坦衰落信道环境中受到加性高斯白噪声的损害。受功率限制的发射机不知道矩阵信道的随机结果，但知道信道统计数据。该链路在中断概率约束下运行。我们提出了一种新颖的架构，使用分层时空对角线来表达有效通信的消息。这种特殊的消息排列被称为分层对角BLAST (SD-BLAST)，它使接收机信号处理能够显着消除多径引起的自干扰，而不会造成时空浪费。我们研究了重要下行链路类别中所提出的通信结构，结果表明，理论上，消息架构对于所有 (M, 1) 系统都是最佳有效的，并且在 M/spl Gt/N 时极其有效。我们使用 (16, 5)、(8, 3) 和 (4, 2) 系统根据经验生成的互补累积分布函数 (CCDF) 来量化 SD-BLAST 的容量性能，以表现出接近最佳的性能，特别是对于 (16, 5) 系统。
We consider a multielement antenna system that uses M transmit and N receive antennas [an (M,N) wireless link] impaired by additive white Gaussian noise in a quasistatic flat-fading channel environment. The transmitter, which is subject to a power constraint, does not know the random outcome of the matrix channel but does know the channel statistics. The link operates under a probability of outage constraint. We present a novel architecture using stratified space-time diagonals to express a message for efficient communications. The special message arrangement, which is termed stratified-diagonal-BLAST (SD-BLAST), enables receiver signal processing that substantially mutes self interference caused by multipath without incurring waste of space-time. We investigate the proposed communication structure in important downlink categories, showing that, in theory, the message architecture is optimally efficient for all (M, 1) systems and extremely efficient when M/spl Gt/N. We quantify the capacity performance of SD-BLAST using empirically generated complementary cumulative distribution functions (CCDFs) for (16, 5), (8, 3), and (4, 2) systems to exhibit near optimal performance most especially for the (16, 5) system.