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Application of antenna arrays to mobile communications. II. Beam-forming and direction-of-arrival considerations

机译:天线阵列在移动通信中的应用。二。波束形成和到达方向的考虑

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Array processing involves manipulation of signals induced on various antenna elements. Its capabilities of steering nulls to reduce cochannel interferences and pointing independent beams toward various mobiles, as well as its ability to provide estimates of directions of radiating sources, make it attractive to a mobile communications system designer. Array processing is expected to play an important role in fulfilling the increased demands of various mobile communications services. Part I of this paper showed how an array could be utilized in different configurations to improve the performance of mobile communications systems, with references to various studies where feasibility of apt array system for mobile communications is considered. This paper provides a comprehensive and detailed treatment of different beam-forming schemes, adaptive algorithms to adjust the required weighting on antennas, direction-of-arrival estimation methods-including their performance comparison-and effects of errors on the performance of an array system, as well as schemes to alleviate them. This paper brings together almost all aspects of array signal processing.
机译:阵列处理涉及操纵在各种天线元件上感应的信号。它控制零点以减少同信道干扰和将独立波束指向各种移动电话的能力,以及提供辐射源方向估计的能力,使其对移动通信系统设计者具有吸引力。阵列处理有望在满足各种移动通信服务不断增长的需求方面发挥重要作用。本文的第一部分显示了如何在不同的配置中利用阵列来改善移动通信系统的性能,并参考了各种研究,其中考虑了适用于移动通信的自适应阵列系统的可行性。本文提供了对各种波束成形方案的全面而详细的处理,用于调整天线所需权重的自适应算法,到达方向估计方法(包括其性能比较)以及误差对阵列系统性能的影响,以及减轻它们的计划。本文汇集了阵列信号处理的几乎所有方面。

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