PREDICTING THE EFFECTS OF NOISE AND INTERFERENCE ON FAST FREQUENCY-HOPPED M-ARY NCFSK SYSTEMS

Authors
  1. Felstead, E.B.
  2. Bird, J.S.
  3. Tenne-Sens, U.A.
Corporate Authors
Communications Research Centre, Ottawa ONT (CAN)
Abstract
The paper discusses calculation of the performance, in terms of received bit error probabilities, of fast frequency-hopped M-ary non-coherent frequency-shift-keyed (NCFSK) systems. It introduces a general method of calculating accurately the performance of such systems for arbitrary M, degraded by system noise and both partial-band-noise and multi-tone jamming. Some typical results are presented and it is shown for a fixed hop rate how the use of time diversity, through repetition of each symbol on several hops, can dramatically improve performance; M may be simultaneously increased to keep the data rate high. This technique in conjunction with only simple error-correction coding can make the system quite robust. System degradation due to multipath can fortuitously be overcome by the same anti-jam techniques.
Report Number
AGARD-CP-420-PAP-22 — @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
11
DSTKIM No
89-04324
CANDIS No
62208
Format(s):
Originator's fiche received by DSIS

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