CODE-SHIFT KEYING FOR FREQUENCY-HOPPING HF SYSTEMS WITH MULTIPATH PROPAGATION

Authors
  1. Venier, G.O.
Corporate Authors
Communications Research Centre, Ottawa ONT (CAN)
Abstract
Code-shift-keying systems transmitting M-ary non-orthogonal codes, and using multiple-delay correlators for demodulation, offer significant advantages over more conventional methods in HF frequency-hopping systems operating in fading multipath conditions. They can give good bit-error-rate performance with high hop rates and moderate data throughput rates, while avoiding intersymbol interference and providing diversity gain against fading when multiple paths exist. This report describes the proposed CSK technique and presents design information. A particular design is chosen for demonstration, and simulation tests of that design are described. These tests demonstrate the performance improvement of the system, in comparison with frequency-shift-keying and differential-phase-shift-keying systems, in a two-path medium in which each path has Rayleigh fading.
Report Number
CRC-1437 —
Date of publication
15 Jun 1991
Number of Pages
37
DSTKIM No
92-00583
CANDIS No
103479
Format(s):
Hardcopy;Originator's fiche received by DSIS

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