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›› 2010, Vol. 27 ›› Issue (5): 657-663.DOI: 10.7523/j.issn.2095-6134.2010.5.012

• Research Articles • Previous Articles     Next Articles

A combined scheme of narrow-band interference suppression for satellite spread-spectrum communication system

HUANG Guo-Sheng1,2, YI Zheng-Rong1,2, ZHU Zhen-Cai2   

  1. 1. Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China;
    2. Shanghai Micro-Satellite Engineering Center, Shanghai 200050, China
  • Received:2009-12-15 Revised:2010-03-19 Online:2010-09-15

Abstract:

A novel narrow-band interference suppression scheme based on overlapped and windowed DFT was proposed for an OQPSK-modulated satellite spread-spectrum communication system. Several windows which satisfy the perfect reconstruction condition were simulated, and the relation between their performance and sidelobe characteristic was deeply analyzed. Several new transform-domain algorithms, such as the CME, pre-excision algorithm, and FCME, were analyzed in aspects of efficiency and complexity of implementation. Finally, a combined scheme of Hann window and the pre-excision algorithm was suggested, and its BER performance was improved by almost 5dB as compared to the conventional Cappoza scheme.

Key words: satellite spread-spectrum communication, narrow-band interference suppression, overlapped and windowed DFT, pre-excision algorithm

CLC Number: