Implementing a matrix-inversion algorithm in a limited-precision adaptive antenna array processor / by Robert W. Jenkins.: Co24-3/8-725-1984E-PDF
"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.
Permanent link to this Catalogue record:
publications.gc.ca/pub?id=9.892625&sl=0
| Department/Agency | Communications Research Centre (Canada), issuing body. |
|---|---|
| Title | Implementing a matrix-inversion algorithm in a limited-precision adaptive antenna array processor / by Robert W. Jenkins. |
| Series title | CRC technical note ; no. 725 |
| Publication type | Series - View Master Record |
| Language | [English] |
| Format | Electronic |
| Electronic document | |
| Note(s) | "Directorate of Military Communications." "December 1984." "This work was sponsored by the Department of National Defence, Research Development Branch, under Project No. 32B75." Digitized edition from print [produced by Innovation, Science and Economic Development Canada]. Includes bibliographical references (page 18). Issued also in print format. |
| Publishing information | Ottawa : Communications Research Centre, 1984. |
| Author / Contributor | Jenkins, Robert W., author. |
| Description | 1 online resource (iii, 20 pages) : illustrations. |
| Catalogue number |
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| Subject terms | Adaptive antennas -- Simulation methods. Antenna arrays -- Simulation methods. Matrix inversion -- Data processing. Computer algorithms. Antennes adaptatives -- Méthodes de simulation. Antennes-réseaux -- Méthodes de simulation. Matrices -- Inversion -- Informatique. Algorithmes. |
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