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Design of an anti-Rician-fading modem for mobile satellite communication systemsTo design a demodulator applicable to mobile satellite communication systems using differential phase shift keying modulation, we have developed key technologies including an anti-Rician-fading demodulation scheme, an initial acquisition scheme, automatic gain control (AGC), automatic frequency control (AFC), and bit timing recovery (BTR). Using these technologies, we have developed one-chip digital signal processor (DSP) modem for mobile terminal, which is compact, of light weight, and of low power consumption. Results of performance test show that the developed DSP modem achieves good performance in terms of bit error ratio in mobile satellite communication environment, i.e., Rician fading channel. It is also shown that the initial acquisition scheme acquires received signal rapidly even if the carrier-to-noise power ratio (CNR) of the received signal is considerably low.
Document ID
19960022455
Document Type
Conference Paper
Authors
Kojima, Toshiharu (Mitsubishi Electric Corp. Kamakura, Japan)
Ishizu, Fumio (Mitsubishi Electric Corp. Kamakura, Japan)
Miyake, Makoto (Mitsubishi Electric Corp. Kamakura, Japan)
Murakami, Keishi (Mitsubishi Electric Corp. Kamakura, Japan)
Fujino, Tadashi (Mitsubishi Electric Corp. Kamakura, Japan)
Date Acquired
August 17, 2013
Publication Date
January 1, 1995
Publication Information
Publication: Proceedings of the Fourth International Mobile Satellite Conference (IMSC 1995)
Subject Category
Communications and Radar
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19960022452Analytic PrimaryProceedings of the Fourth International Mobile Satellite Conference (IMSC 1995)
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