EXCISION TECHNIQUES IN DIRECT SEQUENCE SPREAD SPECTRUM COMMUNICATION SYSTEMS

Authors
  1. Kozminchuk, B.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
The report presents a comprehensive summary of a number of methods for filtering narrowband interference from direct sequence spread spectrum communication systems. The basic concept is discussed first followed by several analog techniques for interference suppression. Most of the emphasis is on digital adaptive methods, which rely on adaptive filtering algorithms. Many of these algorithms are highlighted. This is followed by a discussion on the research which has been conducted in digital excision over the past several years. Two cases based on the author's work are also presented. The first details the performance one can expect from the recursive least squares algorithm when the interferer is a stable tone. An analytical model, which predicts the bit error rate performance for the recursive algorithm under certain conditions, is derived. This model is compared to results obtained from computer simulation. TRUNCATED
Report Number
DREO-1047 —
Date of publication
15 Nov 1990
Number of Pages
80
DSTKIM No
91-00541
CANDIS No
67759
Format(s):
Hardcopy;Originator's fiche received by DSIS

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