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Propagation loss and adaptive power control for a broadband-CDMA communication system in a mobile tactical environment

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3 Author(s)
Schilling, D.L. ; SCS Telecon, Inc., Port Washington, NY, USA ; Lomp, G.R. ; Apelewicz, T.

It is pointed out that the battlefield of the future requires the soldier as well as the command post to be mobile. To maintain high quality, LPI communications in this environment requires a spread spectrum system to use fast acting adaptive power control (APC). In addition, proper design requires a thorough knowledge of propagation loss vs. distance. The authors show that the standard loss model, where PR=PS (d/d0)-n and n=2 for free space or 3 for the Hata model, is incorrect. A correct model is presented with experimental verification. In addition, the authors show that an open-loop APC provides fast acting, linear operation when using broadband-CDMA (code division multiple access) with a chip rate of 24 Mchip/s

Published in:

Military Communications Conference, 1992. MILCOM '92, Conference Record. Communications - Fusing Command, Control and Intelligence., IEEE

Date of Conference:

11-14 Oct 1992