EIGENVECTOR WEIGHTING AS AN ADAPTIVE ARRAY INTERFERENCE CANCELLATION TECHNIQUE

PDF

Authors
  1. Jenkins, R.W.
  2. Moreland, K.W.
Corporate Authors
Communications Research Centre, Ottawa ONT (CAN)
Abstract
Adaptive antenna techniques normally make use of known properties of the desired signal, such as its direction or an embedded code, to distinguish it from interference. When this is not possible, algorithms such as power ratio inversion or Gram-Schmidt are used. These techniques tend to invert the relative powers of signals arriving at the array, and thus are effective when the interference is substantially stronger than the desired signal. However, when signal levels are close, such techniques fail. This paper presents analytic and modelling studies of the eigenvector weighting technique. It is shown that this technique performs substantially better than power ratio inversion techniques. Like the power ratio inversion methods, eigenvector weighting is most effective when there is a large separation in signal powers. However, even when the signals are close in power, satisfactory cancellation can be achieved with eigenvector weighting for a large fraction of cases. TRUNCATED
Report Number
AGARD-CP-486-PAP-16 — @Paper presented at the Electromagnetic Wave Propagation Panel Symposium, Rethymno, Crete, Greece, 15-18 October 1990; CONTAINED IN 92-00205
Date of publication
15 Jun 1991
Number of Pages
13
DSTKIM No
92-00196
CANDIS No
103097
Format(s):
Originator's fiche received by DSIS;Document Image stored on Optical Disk

Permanent link

Document 1 of 1

Date modified: