...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Information Theory >Achieving the Optimal Diversity-Versus-Multiplexing Tradeoff for MIMO Flat Channels With QAM Space–Time Spreading and DFE Equalization
【24h】

Achieving the Optimal Diversity-Versus-Multiplexing Tradeoff for MIMO Flat Channels With QAM Space–Time Spreading and DFE Equalization

机译：通过QAM时空扩展和DFE均衡实现MIMO扁平信道的最佳分集与多路复用权衡

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The use of multiple transmit (Tx) and receive (Rx) antennas allows to transmit multiple signal streams in parallel and hence to increase communication capacity. We have previously introduced simple convolutive linear precoding schemes that spread transmitted symbols in time and space, involving spatial spreading, delay diversity and possibly temporal spreading. In this paper we show that the use of the classical multiple-input-multiple-output (MIMO) decision feedback equalizer (DFE) (but with joint detection) for this system allows to achieve the optimal diversity-versus-multiplexing tradeoff introduced in Zheng and Tse, "Diversity and multiplexing: A fundamental tradeoff in multiple-antenna channels," IEEE Trans. Inf. Theory, May 2003, when a minimum mean squared error (MMSE) design is used. One of the major contributions of this work is the diversity analysis of a MMSE equalizer without the Gaussian approximation. Furthermore, the tradeoff is discussed for an arbitrary number of transmit and receive antennas. We also show the tradeoff obtained for a MMSE zero forcing (ZF) design. So, another originality of this paper is to show that the MIMO optimal tradeoff can be attained with a suboptimal receiver, in this case a DFE, as opposed to optimal maximum likelihood sequence estimation (MLSE)
机译：多个发射（Tx）和接收（Rx）天线的使用允许并行发射多个信号流，从而增加通信容量。我们先前已经介绍了简单的卷积线性预编码方案，该方案在时间和空间上扩展了传输符号，涉及空间扩展，延迟分集以及可能的时间扩展。在本文中，我们证明了为此系统使用经典的多输入多输出（MIMO）决策反馈均衡器（DFE）（但带有联合检测）可以实现在Zheng中引入的最佳分集与复用权衡Tse和Tse，“多样性和多路复用：多天线信道中的基本权衡”，IEEE Trans。 Inf。理论，2003年5月，使用最小均方误差（MMSE）设计。这项工作的主要贡献之一是没有高斯近似的MMSE均衡器的分集分析。此外，讨论了任意数量的发射和接收天线的权衡。我们还显示了针对MMSE零强制（ZF）设计获得的权衡。因此，本文的另一项独创性是表明，与最佳最大似然序列估计（MLSE）相反，使用次优接收器（在这种情况下为DFE）可以获得MIMO最佳权衡

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号