THE STUDY OF SPACE COMMUNICATIONS SPREAD SPECTRUM SYSTEMS. PART I: HIGH DATA RATE SPREAD SPECTRUM SYSTEMS WITH BAND-EFFICIENT MODULATIONS

Authors
  1. Lam, Y.M.
  2. Wittke, P.H.
Corporate Authors
Queen's Univ, Kingston ONT (CAN) Dept of Electrical Engineering;Communications Research Centre, Ottawa ONT (CAN)
Abstract
In the final report, comprehensive results on hopped spread spectrum transmission that employs band-efficient modulations that are coherent during each hop, are presented. A broad range of system considerations are presented, including: signalling spectrum, optimum receivers, system complexity, and performance in the presence of noise and jamming. The particular cases where the hopped modulation is minimum-shift keying (MSK), duobinary minimum-shift keying (DMSK), or tamed-FM (TFM) are considered in detail. As well, results are presented for various modulation indices, rectangular and raised-cosine pulse shapings, and a range of hop interval lengths. Various maximum likelihood receivers are presented. These receivers are complicated and so simplifications to achieve more practical sequence estimation algorithms are carried out. The algorithm which carries out a sequence estimation over each hop appears most promising. TRUNCATED
Report Number
QU,K-DEE-88-4 — Contractor Report (Final)
Date of publication
15 Mar 1988
Number of Pages
189
DSTKIM No
88-04414
CANDIS No
57614
Format(s):
Hardcopy;Originator's fiche received by DSIS

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