A PERSONAL COMMUNICATIONS NETWORK USING A KA-BAND SATELLITE

被引：4

作者：

PALMER, LC

LABORDE, E

STERN, A

SOHN, PY

机构：

[1] GE,DIV ASTRO SPACE,DEPT COMMUN SYST DESIGN,PRINCETON,NJ 08543

[2] NASA,LEWIS RES CTR,CLEVELAND,OH 44135

来源：

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS | 1992年 / 10卷 / 02期

关键词：

Telecommunication Links; Satellite;

D O I：

10.1109/49.126991

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The feasibility of a personal communications network using portable terminals that can provide 4.8 Kb/s voice communications to a hub station via a Ka-band geosynchronous satellite has been investigated. Tradeoffs are examined so that the combined system of hub and gateway earth stations, the satellite, and the personal terminals can provide a competitive service in terms of cost, availability, and quality. A baseline system that uses a spacecraft with approximately 140 spot beams to cover CONUS and 5 W power amplifiers in each beam is described. Satellite access in both the forward and return directions uses frequency division multiple access/code division multiple access (FDMA/CDMA) with a chip rate of 2.5 Mchip/s. The development of such a system at Ka-band can follow only after technological developments in the areas of critical RF elements including antennas and high-power amplifiers (HPA's) at 30 GHz and experiments to demonstrate some of the features of the portable terminal concept.

引用

页码：401 / 417

页数：17

共 10 条

[1] UNIVERSAL DIGITAL PORTABLE COMMUNICATIONS - A SYSTEM PERSPECTIVE [J].