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An Integrated Interference Suppression Scheme with An Adaptive Equalizer for Digital Satellite Communication Systems Takatoshi SUGIYAMA Masanobu SUZUKI Shuji KUBOTA Publication IEICE TRANSACTIONS on Communications Vol.E79-B No.2 pp.191-197 Publication Date: 1996/02/25 Online ISSN: DOI: Print ISSN: 0916-8516 Type of Manuscript: PAPER Category: Satellite Communication Keyword: satellite communication, co-channel interference, interference suppression, notch filter, FEC, adaptive equalizer, Full Text: PDF>>
Summary: This paper proposes an integrated interference suppression scheme which realizes interference-resistant satellite digital signal transmission systems. It employs a notch filter in the receiving side to suppress the co-channel interference (CCI) signal. Moreover, the proposed scheme employs an adaptive equalizer combined with a forward error correction (FEC) scheme to improve the Pe (probability of error) performance degradation due to the inter-symbol interference caused by notch filtering of the desired signal. In the typical frequency modulation (FM) CCI environment with a BWi/FN of 2.3 (BWi: interference signal required bandwidth, fN: one half the Nyquist bandwidth of the desired signal), a Δf / fN of 1.05 (Δf: interference frequency offset) and a D/U of 3 dB (desired to undesired (interference) signal power ratio), the proposed scheme improves the required Eb/NO by 1.5 dB at a Pe of 10-4 compared to that without an adaptive equalizer. | |||||
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