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

Ko, Yo-Han (School of Electrical & Electronic Engineering, Chung-Ang University)
Park, Chang-Hwan (School of Electrical & Electronic Engineering, Chung-Ang University)
Lee, Seung-Jae (School of Electrical & Electronic Engineering, Chung-Ang University)
Cho, Yong-Soo (School of Electrical & Electronic Engineering, Chung-Ang University)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.35, no.6C, 2010 , pp. 530-538 More about this Journal
Abstract
In this paper, estimation methods of cell searching and DoA (Direction of Arrival) for mobile relay stations with a uniform linear array are proposed. The proposed methods can improve the performance of cell searching and DoA estimation by removing the effect of STOs when there exist symbol timing offsets (STOs) between the signals received from adjacent base stations,. Also, the proposed methods can improve the performance of DoA estimation significantly when there exists Doppler frequency shift caused by movement of the mobile relay station. The performances and computational complexities of the proposed cell searching and DoA methods are evaluated by computer simulation under Mobile WiMAX environments.
Keywords
Mobile Relay Station; Uniform Linear Array; DoA Estimation; Cell Searching; Symbol Timing Offset;
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