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Pilot Patterns for OFDM Communication Systems in a Fast Time-Varying Channel
Yeon Ju LIM Deok Soo HYUN Sang Kyu PARK
Publication
IEICE TRANSACTIONS on Communications
Vol.E89-B
No.1
pp.243-246 Publication Date: 2006/01/01 Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.1.243 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: pilot patterns, time-varying channel, OFDM, channel estimation,
Full Text: PDF(309.7KB)>>
Summary:
In this letter, we focus on rearranged pilot patterns for channel estimation in a mobile communication system using Orthogonal Frequency Division Multiplexing (OFDM). The conventional pilot patterns for channel estimation in OFDM systems do not have robust characteristics in time-varying channels. In order to overcome this weakness of the conventional pilot patterns, we propose the pilot patterns with robust mobility for OFDM systems, which can achieve a good error performance in time-varying multi-path fading channels. Simulation results show that the bit error rate (BER) performances of the proposed pilot patterns are better than those of the conventional pilot patterns in fast time-varying fading channels under the same pilot density and data rate.
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