A personal communications network using a Ka-band satellite
| Autor: | A. Stern, L.C. Palmer, Philip Y. Sohn, E. Laborde |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Frequency-division multiple access
Computer Networks and Communications Computer science Code division multiple access business.industry Frequency band Chip Telecommunications network Personal communications network Modulation K band Default gateway Communications satellite Satellite Ka band Electrical and Electronic Engineering business Geosynchronous satellite Computer network |
| Zdroj: | IEEE Journal on Selected Areas in Communications. 10:401-417 |
| ISSN: | 0733-8716 |
| Popis: | The feasibility of a personal communications network using portable terminals that can provide 4.8 kb/s voice communications to a hub station via 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 the contiguous US (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. > |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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