Abstract
This paper proposes an integrated interference suppression scheme which realizes interference-resistant satellite digital signal transmission systems. It employs a notch filier 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 Et,/Na by 1.5 dB at a Pe of 10"4 compared to that without an adaptive equalizer.
| Original language | English |
|---|---|
| Pages (from-to) | 191-196 |
| Number of pages | 6 |
| Journal | IEICE Transactions on Communications |
| Volume | E79-B |
| Issue number | 2 |
| Publication status | Published - 1996 Jan 1 |
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Keywords
- Adaptive equalizer
- Co-channel interference
- FEC
- Interference suppression
- Notch flter
- Satellite communication
ASJC Scopus subject areas
- Software
- Computer Networks and Communications
- Electrical and Electronic Engineering