Common Codebook Millimeter Wave Beam Design: Designing Beams for Both Sounding and Communication With Uniform Planar Arrays
Common Codebook Millimeter Wave Beam Design: Designing Beams for Both Sounding and Communication With Uniform Planar Arrays
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DOI：
10.1109/tcomm.2017.2665497
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发表时间：
2016-06
影响因子：
8.3
通讯作者：
Jiho Song;Junil Choi;D. Love
中科院分区：
文献类型：
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作者：
Jiho Song;Junil Choi;D. Love
第五代无线网络预计将利用可在毫米波(毫米波)频率上可用的宽带来提高系统吞吐量。然而，毫米波链路的不利信道条件，如较高的路径损耗和大气气体或水蒸气造成的衰减，阻碍了可靠的通信。为了补偿这些严重的损失，必须有多个天线来产生尖锐而强大的波束用于定向传输。在本文中，我们考虑了使用均匀平面阵列(UPA)天线的毫米波系统，它有效地将更多的天线放置在2-D网格上。混合波束形成装置也被认为是通过仅使用几个射频链组合多个天线来产生波束。我们重点设计了一组发射波束形成器，在假设UPA和混合波束形成的情况下，产生适应毫米波链路方向特性的波束。我们首先定义了UPA结构的理想波束方向图。每个波束形成器被构造为最小化来自对应的理想波束方向图的均方误差。仿真结果表明，所提出的码本提高了毫米波系统的波束形成可靠性和数据传输速率。
Fifth generation wireless networks are expected to utilize wide bandwidths available at millimeter wave (mmWave) frequencies for enhancing system throughput. However, the unfavorable channel conditions of mmWave links, such as, higher path loss and attenuation due to atmospheric gases or water vapor, hinder reliable communications. To compensate for these severe losses, it is essential to have a multitude of antennas to generate sharp and strong beams for directional transmission. In this paper, we consider mmWave systems using uniform planar array (UPA) antennas, which effectively place more antennas on a 2-D grid. A hybrid beamforming setup is also considered to generate beams by combining a multitude of antennas using only a few radio frequency chains. We focus on designing a set of transmit beamformers generating beams adapted to the directional characteristics of mmWave links assuming a UPA and hybrid beamforming. We first define ideal beam patterns for UPA structures. Each beamformer is constructed to minimize the mean squared error from the corresponding ideal beam pattern. Simulation results verify that the proposed codebooks enhance beamforming reliability and data rate in mmWave systems.