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008201020s1984    onca    ob   f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
0861 |aCo24-3/8-725-1984E-PDF
1001 |aJenkins, Robert W., |eauthor.
24510|aImplementing a matrix-inversion algorithm in a limited-precision adaptive antenna array processor / |cby Robert W. Jenkins.
264 1|aOttawa : |bCommunications Research Centre, |c1984.
300 |a1 online resource (iii, 20 pages) : |billustrations.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aCRC technical note ; |vno. 725
500 |a"Directorate of Military Communications."
500 |a"December 1984."
500 |a"This work was sponsored by the Department of National Defence, Research Development Branch, under Project No. 32B75."
500 |aDigitized edition from print [produced by Innovation, Science and Economic Development Canada].
504 |aIncludes bibliographical references (page 18).
5203 |a"The effect of computation accuracy on the performance of a small adaptive antenna system using a digitally-implemented matrix inversion algorithm is examined. A single-board array processor with 16-bit mantissa floating-point accuracy is compared with a VAX-11/750 computer having 24-bit accuracy in the single-precision mode, and 56-bit accuracy in the double-precision mode. The effects of limited precision on array performance are worse when the signal covariance matrix to be inverted is ill-conditioned (i.e., nearly singular), as is the case with an n-element array in the presence of less than n unrelated signals and a low system noise level. Using a simulated signal environment consisting of a wanted communications signal, a single jamming signal, and a variable system noise level, the performance of the array is evaluated. A need for about -20 dB of artificially-injected system noise (relative to the total signal) is demonstrated in the case of the singleboard array processor, in order that the covariance matrix be sufficiently well-conditioned for adequate array performance"--Abstract, page 1.
530 |aIssued also in print format.
650 0|aAdaptive antennas|xSimulation methods.
650 0|aAntenna arrays|xSimulation methods.
650 0|aMatrix inversion|xData processing.
650 0|aComputer algorithms.
650 6|aAntennes adaptatives|xMéthodes de simulation.
650 6|aAntennes-réseaux|xMéthodes de simulation.
650 6|aMatrices|xInversion|xInformatique.
650 6|aAlgorithmes.
7102 |aCommunications Research Centre (Canada), |eissuing body.
830#0|aCRC technical note ;|vno. 725.|w(CaOODSP)9.882494
85640|qPDF|s1.07 MB|uhttps://publications.gc.ca/collections/collection_2020/isde-ised/Co24/Co24-3-8-725-1984-eng.pdf