Research on Variance-Based FCME Anti-Jaming Algorithm in Spaceborne OFDM System

In recent years, Chinese low-orbit satellite communication system has developed rapidly. As a mature waveform transmission technology, OFDM technology is widely used in low-orbit satellite communication systems with the advantages of outstanding resistance to inter-symbol interference, free spectrum...

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Vydané v:2022 14th International Conference on Signal Processing Systems (ICSPS) s. 651 - 656
Hlavní autori: Wang, Wei, Huang, Yin, Wu, Zhijie, Liu, Yongqing, Han, Hangcheng
Médium: Konferenčný príspevok..
Jazyk:English
Vydavateľské údaje: IEEE 01.11.2022
Predmet:
Bit error rate
DFT-s-OFDM system
Discrete Fourier transforms
frequency domain interference detection
frequency domain interference suppression
Frequency-domain analysis
Interference
OFDM
partial frequency band interference
Signal processing algorithms
Transceivers
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Popis
Shrnutí:In recent years, Chinese low-orbit satellite communication system has developed rapidly. As a mature waveform transmission technology, OFDM technology is widely used in low-orbit satellite communication systems with the advantages of outstanding resistance to inter-symbol interference, free spectrum and resource allocation, etc. However, for the spaceborne OFDM system, the transmission performance of the system will be seriously affected, whether it is in a civil scenario with unintentional interference or in a complex military confrontation environment with intentional interference. Anti-interference ability is an important factor to ensure the security and stability of the system. Aiming at the problem of narrowband interference in OFDM systems, this paper proposes a variance-based FCME anti-jamming algorithm, which adopts the frequency domain notch structure framework of DFT windowing and overlapping, and uses the variance-based FCME algorithm to detect and notch the interference in the frequency domain. Simulation shows that the algorithm can effectively resist single-tone interference, the bit error rate is lower than 10-6 when EbN0=12dB, and the system performance under narrowband interference can be effectively improved.
DOI:10.1109/ICSPS58776.2022.00120