An Iteration Based Beamforming Method for Planar Phased Array in Millimeter-Wave Communication

DOI Web Site 参考文献15件
  • TANG Junlin
    National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China Science and Technology on Information Transmission and Dissemination in Communication Network Laboratory, The 54-th Research Institute of China Electronics Technology Group Corporation
  • YUE Guangrong
    National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China
  • CHEN Lei
    National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China
  • LI Shaoqian
    National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China

抄録

<p>Nowadays, with the extensive use of smart devices, the amount of mobile data is experiencing an exponential growth. As a result, accommodating the large amount of traffic is important for the future 5G mobile communication. Millimeter-wave band, which has a lot of spectrum resources to meet the demand brought by the growth of mobile data, is becoming an important part of 5G technology. In order to mitigate the high path loss brought by the high frequency band, beamforming is often used to enhance the gain of a link. In this paper, we propose an iteration-based beamforming method for planar phased array. When compared to a linear array, a planar phased array points a smaller area which ensures a better link performance. We deduce that different paths of millimeter-wave channel are approximately orthogonal when the antenna array is large, which forms the basis of our iterative approach. We also discuss the development of the important millimeter-wave device-phase shifter, and its effect on the performance of the proposed beamforming method. From the simulation, we prove that our method has a performance close to the singular vector decomposition (SVD) method and is superior to the method in IEEE802.15.3c. Moreover, the channel capacity of the proposed method is at most 0.41bps/Hz less than the SVD method. We also show that the convergence of the proposed method could be achieved within 4 iterations and a 3-bit phase shifter is enough for practical implementation.</p>

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