60 GHz毫米波通信中一种新的波束搜索算法

采用毫米波进行信号传输，使多天线技术集成实现成为可能，继而可利用阵列天线波束赋形技术。然而，当天线阵元数增多时，将导致最优波束对的搜索算法复杂度急剧增加。该文充分利用不同数目阵元产生的波束特性，提出一种基于划区而治的逐步细化高效搜索算法；通过逐步增加使能天线数目，有效缩小搜索空间，最终实现最优波束对搜索。相比于现有方案，该算法能显著降低搜索过程中信令传输及能量消耗，仿真结果进一步验证了该算法的有效性。

A Novel Beam Search Algorithm for 60 GHz Millimeter Wave Communication

Millimeter-wave signals make the integration of antenna arrays technology possible,which can be employed to implement beamforming.However,with the increasing of antenna elements,the complexity of beam searching will also significantly increase.By fully exploring beam characteristics generated with different numbers of array elements,an efficient beam searching algorithm is proposed relying on a novel conception of dividing and conquering.By increasing progressively the number of antenna elements,the search space is noticeably reduced,and the optimal beam pair can be iteratively discovered.Compared with the existing popular schemes,the proposed algorithm can significantly reduce preamble transmissions accompanying energy consumption.Numerical simulation results validate the superiority of the proposed algorithm.