Synchronization and Cell-Search Technique Using Preamble for OFDM Cellular Systems

In this paper, a novel preamble structure, including a synchronization field (S-field) and a cell-search field (C-field), is proposed for orthogonal-frequency-division-multiplexing-based cellular systems. An efficient algorithm for downlink synchronization and cell search using the preamble is also...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2007-11, Vol.56 (6), p.3469-3485
Main Authors: Kwang Soon Kim, Kwang Soon Kim, Sung Woong Kim, Sung Woong Kim, Yong Soo Cho, Yong Soo Cho, Jae Young Ahn, Jae Young Ahn
Format: Article
Language:English
Subjects:
Algorithms
Applied sciences
Cell search
Cellular
Computer simulation
Detection, estimation, filtering, equalization, prediction
Downlink
Equipments and installations
Exact sciences and technology
Frames
Frequency estimation
Frequency synchronization
Information, signal and communications theory
Marketing
Microwave integrated circuits
Mobile radiocommunication systems
Multiaccess communication
Multiplexing
OFDM
Orthogonal Frequency Division Multiplexing
orthogonal-frequency-division multiplexing (OFDM)
Performance analysis
preamble
Radiocommunications
Robustness
Searching
Signal and communications theory
Signal detection
Signal, noise
Synchronism
Synchronization
Telecommunications
Telecommunications and information theory
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Summary:In this paper, a novel preamble structure, including a synchronization field (S-field) and a cell-search field (C-field), is proposed for orthogonal-frequency-division-multiplexing-based cellular systems. An efficient algorithm for downlink synchronization and cell search using the preamble is also proposed. The synchronization and cell-search process includes the initial symbol-timing estimation using continuously or, at least, periodically transmitted downlink signal, the frame detection, the fine symbol-timing estimation, the frequency-offset estimation using the preamble S-field, and the cell identification using the preamble C-field. Performance of each synchronization and cell-search step is analyzed and verified by computer simulation. The overall performance of the synchronization and cell search is then analyzed in terms of the mean acquisition time. It is shown that the proposed preamble with the corresponding synchronization and cell-search algorithm can provide a very robust synchronization and cell-search capability, even in bad cellular environments.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2007.901053