Rapid Hybrid Code Acquisition Scheme in DS/CDMA Systems

Yang SONG  Guang-Rui HU  

IEICE TRANSACTIONS on Communications   Vol.E89-B   No.6   pp.1876-1878
Publication Date: 2006/06/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.6.1876
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Transmission Systems and Transmission Equipment for Communications
synchronization,  PN sequence,  spread spectrum communications,  constant false alarm rate,  

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The rapid hybrid acquisition of PN sequences is proposed for DS/CDMA systems. The system introduces the excision CFAR method into the background power estimation. A mathematical analysis is done for the single path and multipath environments. The detection performance of the proposed scheme is compared with that of other acquisition schemes. Results show that the proposed method has better detection performance if the excision coefficient is properly selected.