...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Signal Processing >Leakage-Based Robust Beamforming for Multi-Antenna Broadcast System With Per-Antenna Power Constraints and Quantized CDI
【24h】

Leakage-Based Robust Beamforming for Multi-Antenna Broadcast System With Per-Antenna Power Constraints and Quantized CDI

机译：具有每个天线功率约束和量化CDI的多天线广播系统基于泄漏的鲁棒波束形成

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

In this paper, we investigate the robust beamforming schemes for a multi-user multiple-input-single-output (MU-MISO) system with per-antenna power constraints and quantized channel direction information (CDI) feedback. Our design objective is to maximize the expectation of the weighted sum-rate performance by means of controlling the interference leakage and properly allocating the power among user equipments (UEs). First, we prove the optimality of the non-robust zero-forcing (ZF) beamforming scheme in the sense of generating the minimum amount of average inter-UE interference under quantized CDI. Then we derive closed-form expressions of the cumulative density function (CDF) of the interference leakage power for the non-robust ZF beamforming scheme, based on which we adjust the leakage thresholds and propose two robust beamforming schemes under per-antenna power constraints with an iterative process to update the per-UE power allocations using the geometric programming (GP). Simulation results show the superiority of the proposed robust beamforming schemes compared with the existing schemes in terms of the average weighted sum-rate performance.
机译：在本文中，我们研究了具有每个天线功率约束和量化信道方向信息（CDI）反馈的多用户多输入单输出（MU-MISO）系统的鲁棒波束成形方案。我们的设计目标是通过控制干扰泄漏并在用户设备（UE）之间适当分配功率，来最大化对加权总和性能的期望。首先，从量化的CDI下产生最小量的平均UE间干扰的意义上，我们证明了非鲁棒的零强迫（ZF）波束成形方案的最优性。然后我们推导了非鲁棒ZF波束形成方案的干扰泄漏功率的累积密度函数（CDF）的闭式表达式，在此基础上我们调整了泄漏阈值，并提出了在每个天线功率约束下的两种鲁棒波束形成方案。使用几何编程（GP）更新每个UE功率分配的迭代过程。仿真结果表明，在平均加权和速率性能方面，所提出的鲁棒波束形成方案与现有方案相比具有优越性。

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