Adaptive scheme for M-DPSK signals in LEO satellite communications

Author

Nunes, Fernando D. ; Leitão, José M N

Author_Institution

Instituto de Telecomunicacoes, Instituto Superior Tecnico, Lisbon, Portugal

Volume

4

fYear

2001

fDate

2001

Firstpage

2993

Abstract

Adaptive schemes, consisting of a channel gain prediction algorithm and a feedback channel, have been proposed as an alternative to conventional diversity techniques to decrease the error rates in fading channels. In this paper, we analyze the feasibility of using adaptive schemes in LEO satellite systems. Although limited to quasi-static users and nearby reflectors, the proposed adaptive scheme, which operates in two modes (transmit/don´t transmit), achieves significant error rate reductions regarding conventional constant data rate transmissions

Keywords

adaptive modulation; differential phase shift keying; fading channels; mobile satellite communication; LEO satellite communications; M-DPSK signals; adaptive scheme; channel gain prediction algorithm; error rate reductions; fading channels; feedback channel; nearby reflectors; quasi-static users; Adaptive systems; Additive noise; Bit error rate; Channel capacity; Error analysis; Fading; Gaussian channels; Low earth orbit satellites; Satellite communication; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd

Conference_Location

Rhodes

ISSN

1090-3038

Print_ISBN

0-7803-6728-6

Type

conf

DOI

10.1109/VETECS.2001.944152

Filename

944152