A New Short-Time DFT FSK Demodulation Method for LEO Satellite Communications Systems
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概要
- 論文の詳細を見る
This paper presents a new Frequency Shift Key-ing (FSK) demodulation method using the Short Time-Discrete Fourier Transform (ST-DFT) analysis to combat large frequency offset with time variation in low earth orbit (LEO) satellite com-munications systems. This demodulation method can demodulate the received signal only by searching for the instantaneous spectrum energy peaks without complicated carrier recovery. In addition, it is insensitive to the signal-to-noise ratio (SNR) degra-dation caused by the excessively wide bandwidth of the receiver front-end band pass filter. Furthermore, the ST-DFT analysis combined with a diffbrential encoding scheme gives FSK de-modulation method a potential robustness against large and fast time-varying frequency offset. key words: LEO Short-Time Discrete Fourier Transform, frequency offset dfferential FSK
- 社団法人電子情報通信学会の論文
- 1996-10-25
著者
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Hara S
Osaka Univ. Suita‐shi Jpn
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Hara S
The Department Of Electronic Information And Energy Engineering Graduate School Of Engineering Osaka
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Hara Shinsuke
The Faculty Of Engineering Osaka University
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Morinaga Norihiko
The Faculty Of Engineering Osaka University
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Morinaga Norihiko
The Graduate School Of Engineering Osaka University
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Hara Shinsuke
The Graduate School Of Engineering Osaka University
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WANNASARNMAYTHA Attapol
the Graduate School of Engineering, Osaka University
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Wannasarnmaytha Attapol
The Graduate School Of Engineering Osaka University
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Morinaga N
Department Of Information Technology Faculty Of Infrastructural Technologies Hiroshima International
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