Layer 3 Diversity Reception Technology for Ku-Band Mobile Satellite Communication Systems

Fumiaki NAGASE
Masayoshi NAKAYAMA
Masazumi UEBA

IEICE TRANSACTIONS on Communications   Vol.E89-B    No.6    pp.1856-1861
Publication Date: 2006/06/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.6.1856
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Satellite Communications
mobile satellite communications,  shadowing,  diversity reception,  layer 3,  

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We describe a layer 3 diversity reception scheme that enhances the transmission characteristics of Ku-band mobile satellite communication systems. This scheme can realize high-speed communication for vehicles that experience shadowing caused by terrestrial obstacles such as tunnels, buildings and bridges, especially for trains that frequently experience shadowing from the trolley wire structures. Layer 3 diversity was chosen for long distance diversity to prevent signal shadowing caused by terrestrial obstacles while minimizing the alterations of existing receivers. The technology enables high-speed communication under shadowing conditions in a running train environment.