BIT RATE RECOVERY USING DIGITAL LADDER NETWORKS

Authors
  1. Kozminchuk, B.W.
  2. Kuhl, L.E.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
An algorithm that estimates the bit rate of PSK and FSK signals has been developed and its performance simulated. The basis of the algorithms stems from a Digital Ladder Network to detect bit changes in intercepted signals. Random bit changes are reflected in large values of the ladder's so-called "likelihood parameter". The characteristics and trends of this parameter are observed and documented. The bit rate is obtained from an estimate of the likelihood parameter's power spectrum. Simulation results show that the algorithm produces a distinct spectral line at the bit rate for signal-to-noise ratios as low as -1 dB.
Report Number
DREO-TN-89-1 — Technical Note
Date of publication
15 Dec 1988
Number of Pages
38
DSTKIM No
89-02610
CANDIS No
60515
Format(s):
Hardcopy;Originator's fiche received by DSIS

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