Anti-Interference Receiver Structures for Direct Sequence Spread Spectrum Signals
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概要
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Conventional narrowband interference (NBI) rejection algorithms often assumed perfect pseudo-noise (PN) code synchronization. The functions of NBI rejection and code tracking are performed separately and independently by an adaptive filter and a code tracking loop, respectively. This paper presents two new receiver structures for direct sequence spread spectrum (DS/SS) systems, one operates in coherent mode and the other operates in noncoherent mode. Both receivers are designed to suppress NBI and minimize tracking jitter. Numerical results show that the proposed coherent receiver performs as good as the conventional receiver that uses an LMS NBI rejection filter with zero tracking jitter. The noncoherent receiver, when compared with the coherent one, suffers less than 3dB degradation for bit error probability smaller than 10-3.
- (社)電子情報通信学会の論文
- 2008-04-01
著者
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Jeng Li-der
Department Of Electronic Engineering Chung-yuan Christian University
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Ueng Fang-biau
Department Of Electrical Engineering National Chung-hsing University
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JENG Li-Der
Department of Communication Engineering, National Chiao Tung University
関連論文
- Anti-Interference Receiver Structures for Direct Sequence Spread Spectrum Signals
- Cochannel Interference Rejection in Multipath Channels