CODING FOR FREQUENCY HOPPED SPREAD SPECTRUM SATELLITE COMMUNICATIONS: ANNUAL REPORT

Authors
  1. Wang, Q.
  2. Li, G.
  3. Blake, I.F.
  4. Bhargava, V.K.
  5. Chen, Q.
  6. Gulliver, T.A.
Corporate Authors
Victoria Univ, Victoria BC (CAN) Dept of Electrical and Computer Engineering;Defence Research Establishment Ottawa, Ottawa ONT (CAN);Department of Communications, Ottawa ONT (CAN);Waterloo Univ, Waterloo ONT (CAN)
Abstract
A nonlinear diversity combining scheme using the Viterbi ratio-threshold technique is discussed. Performances of the ratio-threshold diversity combiner in fast frequency hop spread spectrum systems with M-ary frequency shift keying modulation (FFH/MFSK) under partial band noise and band multitone jamming without and with the additive white Guassian noise (AWGN) are analyzed. Performance of the combining scheme under the worst case jamming is compared with that of soft linear combining with perfect side information. The performances under band multitone jamming and under partial band noise jamming are also compared. Results of a study of the performance of M-ary differential phase shift keying (MDPSK) signalling in the presense of both tone jamming and AWGN are presented. Error correlation in DPSK demodulation is considered in terms of its effects on the block and decoded error probabilities.
Keywords
Ratio-threshold technique
Report Number
TR-ECE-91-1 — Annual Technical Report; Contractor Report
Date of publication
31 May 1991
Number of Pages
166
DSTKIM No
93-03689
CANDIS No
128546
Format(s):
Hardcopy;Originator's fiche received by DSIS

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