Cell Searching and DoA Estimation Methods for Mobile Relay Stations with a Uniform Linear Array

Yo-Han KO  Chang-Hwan PARK  Soon-Jik KWON  Yong-Soo CHO  

IEICE TRANSACTIONS on Communications   Vol.E95-B   No.3   pp.803-809
Publication Date: 2012/03/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E95.B.803
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Transmission Systems and Transmission Equipment for Communications
mobile relay station,  vehicle,  uniform linear array,  cell searching,  DoA estimation,  

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In this paper, cell searching and direction-of-arrival (DoA) estimation methods are proposed for mobile relay stations with a uniform linear arrays in OFDM-based cellular systems. The proposed methods can improve the performance of cell searching and DoA estimation, even when there exist symbol timing offsets among the signals received from adjacent base stations and Doppler frequency shifts caused by the movement of the mobile relay station. The performances and computational complexities of the proposed cell searching and DoA estimation methods are evaluated by computer simulation under a mobile WiMAX environment.