Development of MBC System Using Software Modem

Khaled MAHMUD  Kaiji MUKUMOTO  Akira FUKUDA  

Publication
IEICE TRANSACTIONS on Communications   Vol.E83-B   No.6   pp.1269-1281
Publication Date: 2000/06/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Software Defined Radio and Its Technologies)
Category: 
Keyword: 
Meteor Burst Communication,  dynamic channel estimation,  variable rate transmission,  software modem,  DSP-based system,  

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Summary: 
A new type of Meteor Burst Communication (MBC) network is developed. Each unit of the network is based on a DSP board running a modem software. All the fundamental blocks and functions of a modem are implemented in software. Unlike hardware modems, this software modem has flexibility of system configuration and operation. The system implements adaptability in terms of modulation type (number of phases in MPSK) using a unique dynamic channel estimation scheme appropriate for MBC channel. An MBC network protocol is implemented within the modem software. Some preliminary experiments were carried out for differential BPSK and differential QPSK modulations over a practical meteor burst link, and the results are presented.