A Differential Cross-Correlation Cell Search Algorithm for IEEE 802.16e OFDMA Systems

Juinn-Horng DENG
Jeng-Kuang HWANG
Shu-Min LIAO

IEICE TRANSACTIONS on Communications   Vol.E94-B    No.2    pp.587-590
Publication Date: 2011/02/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.587
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
orthogonal frequency division multiplexing access (OFDMA),  cell search,  preamble,  synchronization,  

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A differential cross-correlation cell ID identification algorithm is proposed for IEEE 802.16e OFDMA cellular system. The cell ID represents the number of the preamble selected by the base station in downlink mode. First, we construct the downlink (DL) preamble structure and signal model with carrier frequency offset (CFO) and channel effects. Next, in order to achieve the initial synchronization, a differential receiver with cross correlation for all preamble patterns is proposed to search for cell ID. Simulation results confirm that the proposed structure is suitable for ITU fading channels and outperforms the conventional cell search system.