Total capacity in a shared CDMA LEOS environment

Author

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

Author_Institution

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

Volume

13

Issue

2

fYear

1995

fDate

2/1/1995 12:00:00 AM

Firstpage

232

Lastpage

244

Abstract

We are interested in determining the feasibility of having multiple service providers share the same spectrum in transponder-type. Satellite-based, code-division multiple-access mobile communications. To accomplish this, we compare the total capacity when n systems are operational to that when only a single system uses the frequency band. This comparison is made for both the uplink and the downlink under one of two possible constraints, either a maximum power flux density (PFD) limit per system, or an aggregate PFD limitation. While there are circumstances when the total capacity of multiple systems can achieve a greater value than that of a single service provider, conditions depend on the degree of shadowing, and whether or not the PFD limit is on a per system basis or on an aggregate basis from all systems

Keywords

channel capacity; code division multiple access; mobile satellite communication; radiowave propagation; telecommunication services; aggregate PFD; code-division multiple-access; downlink; frequency band; maximum power flux density; mobile satellite communications; multiple service providers; multiple systems; shadowing; shared CDMA LEOS environment; total capacity; transponder; uplink; Aggregates; Downlink; Lasers and Electro-Optics Society; Low earth orbit satellites; Mobile communication; Multiaccess communication; Phase frequency detector; Rayleigh channels; Satellite broadcasting; Shadow mapping;

fLanguage

English

Journal_Title

Selected Areas in Communications, IEEE Journal on

Publisher

ieee

ISSN

0733-8716

Type

jour

DOI

10.1109/49.345867

Filename

345867