Downlink DS CDMA performance over a mobile satellite channel

Author

Vojcic, B.R. ; Milstein, Laurence B. ; Pickholtz, Raymond L.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., George Washington Univ., Washington, DC, USA

Volume

45

Issue

3

fYear

1996

fDate

8/1/1996 12:00:00 AM

Firstpage

551

Lastpage

560

Abstract

Code division multiple access (CDMA) has been proposed for personal communications networks for both terrestrial and satellite links. We analyze the performance of the downlink (i.e., the base-to-mobile link) of a low earth orbiting (LEO) mobile satellite channel. An important characteristic of this fading channel is that the desired signal and the multiple access interference from all spot beams of the corresponding satellite fade simultaneously. In this respect, the satellite downlink is also different from its terrestrial counterpart. A two-state fading channel model is considered. In the nonshadowed state, the signal envelope is characterized by Rician statistics and in the shadowed state by the Rayleigh statistics. We analyze the probability of error performance when coherent detection, diversity, spectrum sharing by two service providers, and forward error correction are employed

Keywords

Rayleigh channels; Rician channels; code division multiple access; coding errors; diversity reception; error statistics; fading; forward error correction; mobile satellite communication; pseudonoise codes; radiofrequency interference; satellite links; spread spectrum communication; LEO; Rayleigh statistics; Rician statistics; base to mobile link; code division multiple access; coherent detection; diversity; downlink DS CDMA performance; error probability; fading channel; forward error corection; low earth orbiting mobile satellite channel; multiple access interference; nonshadowed state; personal communications networks; satellite downlink; satellite links; shadowed state; signal envelope; spectrum sharing; spot beams; terrestrial links; two-state fading channel model; Artificial satellites; Downlink; Fading; Low earth orbit satellites; Multiaccess communication; Multiple access interference; Performance analysis; Personal communication networks; Rician channels; Statistics;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.533770

Filename

533770