An Acquisition Method Using Correlation Mapping with False Alarm Penalty in M-ary/SS Systems

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概要

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• This paper proposes a synchronous acquisition method using correlation mapping by multiple-dwell detection considering false alarm penalty in M-ary/SS sytems. In the method, first, the correlation value between a received signal and each assigned sequence in an M-ary/SS system in some short duration is calculated for each phase and stored in the mapping. Second, the maximum correlation value of each phase in the mapping is selected and arranged, then, the first probable synchronous phase is decided by the maximum one in these values. Simultaneously, data demodulation starts. Next, to recognize the synchronous phase, i.e., as considering false alarm penalty, the correlation values are calculated in longer duration, and the second probable phase with high reliability can be obtained by suppression of noise to signal level. Finally, if the second synchronous phase is different from the first one, the second one is reset. By this method, a short acquisition time and high reliability of acquisition can be achieved. The improvement of acquisition time and the optimal combination values of dwelling time, which is duration to calculate the correlation, are shown for several conditions in asynchronous M-ary/SSMA.

• 一般社団法人電子情報通信学会の論文
• 2001-06-01

著者

• Hamamura Masanori

  The Department Of Electrical Engineering Faculty Of Engineering Nagaoka University Of Technology

• Hamamura Masanori

  The Department Of Information Systems Engineering Kochi University Of Technology

• OKAZAKI Yuuki

  the Faculty of Engineering, Nagaoka University of Technology

• Okazaki Yuuki

  The Faculty Of Engineering Nagaoka University Of Technology

関連論文

• Sequence Interference Suppression Characteristics of Code-Diversity DS/CDMA over Multipath Fading Channels(special Section on Spread Spectrum Techniques and Applications)
• A Modified Acquisition Method Using Code-Orthogonalizing Filters in Asynchronous DS/CDMA (Special Section on Spread Spectrum Techniques and Applications)
• The Effects of Odd-Correlation and Band-Limitation in Direct-Wave Reception Systems Using Broadband Spread-Spectrum Techniqus (Special Section on Spread Spectrum Techniques and Applications)
• An Acquisition Method Using Correlation Mapping with False Alarm Penalty in M-ary/SS Systems

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