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Practical User Selection With Heterogeneous Bandwidth and Antennas for MU-MIMO WLANs

机译:具有多均匀带宽和天线的实用用户选择Mu-MIMO WLAN

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摘要

User selection is one of the most important components for next generation multi-user multiple-input-multiple-output wireless local area networks. However, state-of-the-art approaches neglect the heterogeneity of users in the available bandwidth and the number of antennas, which diminishes their performance considerably. To tackle this challenge, we formulate a novel integer optimization framework to select the antennas of heterogeneous users simultaneously. With estimated signal-to-interference-and-noise ratio of users via channel vector projection, we propose a low-complexity branch-and-prune algorithm to search for the near-optimal combinations of user antennas. Our algorithm is compatible with legacy 802.11ac and is implemented on the software defined radio system. Extensive experiments show that our algorithm achieves around 95% of the optimal throughput and outperforms a benchmark scheme with a 1.18x gain in realistic indoor environments.
机译:用户选择是下一代多用户多输入多输出无线局域网中最重要的组件之一。然而,最先进的方法忽略了可用带宽和天线数量的用户的异质性,这会显着减少它们的性能。为了解决这一挑战,我们制定了一种新颖的整数优化框架,可以同时选择异构用户的天线。通过频道向量投影估计用户的估计信号到干扰和噪声比,我们提出了一种低复杂性分支 - 和判处,用于搜索用户天线的近最佳组合。我们的算法与遗留802.11ac兼容,并在软件定义的无线电系统上实现。广泛的实验表明,我们的算法达到了最佳吞吐量的95%大约95%,并且在现实的室内环境中具有1.18倍的基准方案。

著录项

  • 来源
    《Wireless Communications Letters, IEEE》 |2019年第2期|556-559|共4页
  • 作者单位

    Fudan Univ Res Ctr Smart Networks & Syst Sch Informat Sci & Technol Shanghai 200433 Peoples R China;

    Fudan Univ Sch Comp Sci Shanghai 200433 Peoples R China;

    Fudan Univ Res Ctr Smart Networks & Syst Sch Informat Sci & Technol Shanghai 200433 Peoples R China;

    Fudan Univ Sch Comp Sci Shanghai 200433 Peoples R China;

    Fudan Univ Res Ctr Smart Networks & Syst Sch Informat Sci & Technol Shanghai 200433 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    MU-MIMO; user selection; heterogeneity; branch-and-prune;

    机译:mu-mimo;用户选择;异质性;分支 - 修剪;

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