A Prototype Modem for Hyper-Multipoint Data Gathering SATCOM Systems --- A Group Modem Applicable to Arbitrarily and Dynamically Assigned FDMA Signals ---

Kiyoshi KOBAYASHI  Fumihiro YAMASHITA  Jun-ichi ABE  Masazumi UEBA  

IEICE TRANSACTIONS on Communications   Vol.E92-B   No.11   pp.3318-3325
Publication Date: 2009/11/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.3318
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Satellite Communication Technologies in Conjunction with Main Topics of JC-SAT2008)
FFT filter bank,  group modem,  hyper-multipoint data gathering,  arbitrary and dynamic frequency assignment,  satellite communication,  

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This paper presents a prototype group modem for a hyper-multipoint data gathering satellite communication system. It can handle arbitrarily and dynamically assigned FDMA signals by employing a novel FFT-type block demultiplexer/multiplexer. We clarify its configuration and operational principle. Experiments show that the developed modem offers excellent performance.