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| 02859cam 2200409zi 4500 |
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001 | 9.895061 |
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003 | CaOODSP |
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005 | 20221107173924 |
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006 | m o d f |
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007 | cr bn||||||||| |
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008 | 210106e198506 onca obt f000 0 eng d |
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040 | |aCaOODSP|beng|erda|cCaOODSP |
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086 | 1 |aCo24-3/7-1392-1985E-PDF |
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100 | 1 |aFelstead, E. B. |q(E. Barry), |d1940- |eauthor. |
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245 | 12|aA SAW-based demodulator for multiple-user dehopped M-ary FSK signals - implementation and measurements / |cby E.B. Felstead, J.L. Pearce, and D.L. Selin. |
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264 | 1|aOttawa : |bCommunications Research Centre, |cJune 1985. |
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300 | |a1 online resource (iii, 46 pages) : |billustrations. |
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336 | |atext|btxt|2rdacontent |
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337 | |acomputer|bc|2rdamedia |
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338 | |aonline resource|bcr|2rdacarrier |
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490 | 1 |aCRC report ; |vno. 1392 |
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500 | |a"Space Technology and Applications Branch." |
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500 | |a"This document was prepared for and is the property of the Department of National Defence, Research and Development Branch under Project No. 32A58." |
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500 | |aDigitized edition from print [produced by Innovation, Science and Economic Development Canada]. |
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504 | |aIncludes bibliographical references (page 34). |
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520 | 3 |a"A demodulator has been built and tested that is capable of performing the functions of an onboard-the-satellite processor for receiving M-ary noncoherent FSK signals with multiple users being separated by FDMA. It is based on spectral analysis of the received signal by a chirp transformer implemented with surface acoustic-wave devices. Demodulation of M=4-, 8-, and 16-ary FSK signals of 25 µs symbol duration was demonstrated with capability of handling up to 40/M users. The implementation loss was only 0.5 dB. Measurement of bit error rate performance in the presence of system noise, frequency errors, and partial-band-noise and multiple-tone jamming were made and found to agree well with theory. The effects were examined of three different time windows: rectangular, Kaiser Bessel α = 1.6, and one intermediate between these two. The intermediate window is promising because of low window loss combined with good adjacent channel interference tolerance"--Abstract, page 1. |
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530 | |aIssued also in print format. |
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650 | 0|aRadio detectors. |
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650 | 0|aAcoustic surface wave devices. |
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650 | 0|aArtificial satellites in telecommunication. |
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650 | 6|aDémodulateurs. |
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650 | 6|aDispositifs à ondes acoustiques de surface. |
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650 | 6|aSatellites artificiels dans les télécommunications. |
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710 | 2 |aCommunications Research Centre (Canada), |eissuing body. |
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830 | #0|aCRC report ;|vno. 1392.|w(CaOODSP)9.882492 |
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856 | 40|qPDF|s2.06 MB|uhttps://publications.gc.ca/collections/collection_2021/isde-ised/co24/Co24-3-7-1392-1985-eng.pdf |
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