EVALUATION OF THE MARISAT SATELLITE UHF WIDEBAND CHANNEL

Authors
  1. Seed, W.R.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
The use of the MARISAT satellite UHF wideband channel as a radio link for multiple users is investigated. An analytical evaluation of the link is performed for up to 10 users sharing the non-processing transponder's 500 kHz bandwidth. The terminal link carrier-power-to-noise-power-spectral-density ratio, C/N sub o, is evaluated for data rates of 2.4, 4.8 and 16 kbps, and for terminal effective isotropic radiated power (EIRP) levels from 17 to 30 dBW. Analyses are performed for cases in which all terminals transmit with the same EIRP and also for cases in which a single user is either 3 dB above or below the other users. A variety of loading schemes are considered to demonstrate the variation in user SNR degradation due to hardlimiting on-board the transponder. The terminal C/N sub o is compared to the minimum performance requirement plus a 3 dB margin to determine the link capacity. TRUNCATED
Report Number
DREO-TN-90-25 — Technical Note
Date of publication
15 Nov 1990
Number of Pages
36
DSTKIM No
91-01473
CANDIS No
68680
Format(s):
Hardcopy;Originator's fiche received by DSIS

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