| || Military Radio Communications Research in Australia
Author : Cook, S.C.;Scholz, J.B.;Andrews, F.B.
Source : Defence Science Journal ; Vol:43(1) ; 1993 ; pp 7-16
Subject : 623.61 Military Communications
Keywords : Military radio communications;Digital radio communication;Self adaptive control
Abstract : An overview of recent research by the Australian Defence Science and Technology Organisation in the field of military radio communications is presented. A philosophy for improving digital radio system performance over complex, variable channels is outlined. A key breakthrough, called PDF-directed adaptive radio, which can provide substantially greater throughput over HF channels whilst minimising bit-error rate and delay, is described. Simulation results for fast adaptive Schemes applied to both serial-tone and parallel-tone HF modems are presented and shown to significantly out-perform fixed rate modems and modems employing hybrid automatic-repeat-request schemes. A new detector scheme is discussed which has superior performance to conventional detectors for digital traffic in the presence of inter-symbol interference and impulsive noise.