Generalized Pattern Search for Beam Discovery in Millimeter Wave Systems

M. Jasim, N. Ghani
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引用次数: 20

Abstract

The use of beamforming techniques in millimeter wave systems is crucial for overcoming poor scattering channel impairments. This directional transmission and reception method compels the base station and mobile station to conduct exhaustive spatial beam search, i.e., to determine directions with optimum gains. Consequently, this technique results in high computational complexity, prolonged discovery times and energy inefficiency. Hence this paper proposes a novel initial beam discovery algorithm for sparse millimeter wave channels in non-line of sight outdoor environments. The discovery problem is formulated as an optimization problem, and a modified form of coordinated generalized pattern search is presented to mitigate the aforementioned limitations. Results show that the proposed algorithm delivers significant performance enhancement compared to existing solutions.
毫米波系统波束发现的广义模式搜索
在毫米波系统中使用波束形成技术是克服散射信道缺陷的关键。这种定向发射和接收方法迫使基站和移动站进行穷举的空间波束搜索,即确定具有最佳增益的方向。因此,这种技术导致计算复杂度高、发现时间长、能源效率低。为此,本文提出了一种新的非视线室外稀疏毫米波信道初始波束发现算法。将发现问题表述为优化问题,并提出了一种改进的协调广义模式搜索形式以减轻上述局限性。结果表明,与现有算法相比,该算法具有显著的性能提升。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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