Abstract
This paper analysed the narrow-band interference in the satellite communication systems. Under the background of the project - signal interference suppression in digital satellite communication systems, it built a mathematical model and proposed a new interference detection algorithm, FFT interference detection, in order to suppress the narrow-band interference in the FDMA-DQPSK channel. Compared with the traditional algorithm, the new one improves the power threshold and interference band-width calculation. The detection results were used to design a notch filter, which was applied to suppress the narrow-band interference in the simulation system, resulting in a satisfactory output. Comparison of the output of the notch filter between the two algorithms demonstrates the feasibility and priority of the new one.
| Original language | English |
|---|---|
| Pages (from-to) | 1600-1602 |
| Number of pages | 3 |
| Journal | Shanghai Jiaotong Daxue Xuebao/Journal of Shanghai Jiaotong University |
| Volume | 37 |
| Issue number | 10 |
| Publication status | Published - 2003 Oct |
| Externally published | Yes |
Keywords
- Co-channel interference
- Differential quadrature phase shift keying (DQPSK)
- Digital satellite communication system
- Fast Fourier transform (FFT) interference detection
ASJC Scopus subject areas
- General