THE DESIGN AND PERFORMANCE OF AN ADAPTIVE PACKET-SWITCHED HF DATA TERMINAL

Authors
  1. Nourry, G.R.
  2. Mackie, A.J.
Corporate Authors
Communications Research Centre, Ottawa ONT (CAN);Intellitech Canada Ltd, Ottawa ONT (CAN)
Abstract
Adaptive techniques form a useful set of tools for combatting the time and space variability of HF channels and the other factors adversely affecting HF communications. These techniques have been implemented together with packet-switching in a vehicle called the HF data terminal. The terminal is characterized by adaptivity at all levels of its design, including a real-time channel evaluation and channel selection mechanism, an adaptive link protocol for channel optimization, and a fully distributed and adaptive routing algorithm for the selection of routes in an HF network. The adaptivity is implemented via a suite of robust, low-overhead, adaptive protocols that work even in low-bandwidth and error-prone environments. With the exception of channel evaluation/selection, all forms of adaptivity are dynamic and not negotiated over HF links. The data terminal has been tested over both short and long HF links. TRUNCATED
Report Number
AGARD-CP-420-PAP-11 — @Paper presented at the Electromagnetic Wave Propagation Panel Specialists' Meeting held in Lisbon, Portugal, 26-30 October 1987; CONTAINEDIN 89-04347
Date of publication
15 Dec 1988
Number of Pages
10
DSTKIM No
89-04335
CANDIS No
62219
Format(s):
Originator's fiche received by DSIS

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