A Proposal of Multi-Carrier Channel Control for Mobile Satellite Communication Systems to Make Maximum Use both of Transponder Bandwidth and Transmission Power

Katsuya NAKAHIRA  Takatoshi SUGIYAMA  Hiroki NISHIYAMA  Nei KATO 

Publication
B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)  Vol.J95-B  No.5  pp.662-676
Publication Date: 2012/05/01
Online ISSN: 1881-0209
Print ISSN: 1344-4697
Type of Manuscript: PAPER
Category: 
Keyword: 
satellite communication,  channel allocation,  propagation variation,  adaptive modulation,  multi-carrier transmission, 

Full Text(in Japanese): PDF(1.9MB)

Summary: 
This paper proposes a novel channel control technique for applying the propagation variation condition of mobile satellite earth stations. It is based on adaptive multi-carrier channel allocation (AMCA) that adjusts a modulation method carrier-by-carrier to flexibly utilize the satellite bandwidth and power simultaneously. Since the proposed technique controls transmission power and re-allocates AMCA channels in accordance with the earth station's propagation gain, it enables each of the channel resources needed for communication between stations to be maintained at a minimum level. Simulation evaluation shows that the proposed technique utilizes satellite resources more efficiently than a conventional method that fixes transmission power for all earth stations. As a result, it enhances the system capacity by about 1.6 times.