Carrier Slip Compensating Time Diversity Scheme for Helicopter Satellite Communication Systems

Tatsuya UCHIKI  Toshiharu KOJIMA  Makoto MIYAKE  Tadashi FUJINO  

IEICE TRANSACTIONS on Communications   Vol.E81-B   No.12   pp.2311-2317
Publication Date: 1998/12/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on the Latest Development of Telecommunication Research)
Category: Wireless Communication Systems
helicopter satellite communication,  time diversity,  carrier slip compensation,  coherent phase shift keying,  

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This paper proposes a novel signal transmission scheme for helicopter satellite communications. The proposed scheme is based on time diversity, and combined with a novel algorithm to suppress an influence of carrier phase slip. In the proposed scheme, carrier phase slip is detected in cross correlation processing of the received signal, and is effectively suppressed. The proposed scheme thus makes it possible to employ coherent phase shift keying modulation to achieve bit error rate performance superior to that of differential phase shift keying modulation even in the low carrier-to-noise power ratio environment.