A Cell Searching Technique without Double Counting for a Mobile Station with Multiple Antenna Arrays in Millimeter Wave Cellular Communication Systems

In Su KIM  Hae-In PARK  Won Young YANG  Yong Soo CHO  

IEICE TRANSACTIONS on Communications   Vol.E99-B   No.3   pp.739-748
Publication Date: 2016/03/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2015EBP3333
Type of Manuscript: PAPER
Category: Wireless Communication Technologies
millimeter wave,  beamforming,  cell searching,  multiple antenna arrays,  uniform circular array,  

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This paper deals with a beamforming and cell ID detection technique for a mobile station (MS) with multiple antenna arrays in millimeter wave (mm-wave) cellular communication systems. Multiple antenna arrays, required to cover the entire space around the MS, can be used to estimate the direction of arrivals (DoAs) and cell IDs, form beams in the direction of DoAs, select a serving cell in a cooperative manner, and improve BER performance by signal combining. However, a signal may enter the overlapped region formed by two adjacent arrays in the MS, resulting in a double-counting problem during the cell searching period. In this paper, a beamforming and cell detection technique without double-counting is proposed to handle this problem, and they are evaluated by simulation in a simple scenario of an mm-wave cellular system with spatial channel model (SCM).