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008210106e198506  onca    obt  f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
0861 |aCo24-3/7-1392-1985E-PDF
1001 |aFelstead, E. B. |q(E. Barry), |d1940- |eauthor.
24512|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.
264 1|aOttawa : |bCommunications Research Centre, |cJune 1985.
300 |a1 online resource (iii, 46 pages) : |billustrations.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aCRC report ; |vno. 1392
500 |a"Space Technology and Applications Branch."
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."
500 |aDigitized edition from print [produced by Innovation, Science and Economic Development Canada].
504 |aIncludes bibliographical references (page 34).
5203 |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.
530 |aIssued also in print format.
650 0|aRadio detectors.
650 0|aAcoustic surface wave devices.
650 0|aArtificial satellites in telecommunication.
650 6|aDémodulateurs.
650 6|aDispositifs à ondes acoustiques de surface.
650 6|aSatellites artificiels dans les télécommunications.
7102 |aCommunications Research Centre (Canada), |eissuing body.
830#0|aCRC report ;|vno. 1392.|w(CaOODSP)9.882492
85640|qPDF|s2.06 MB|uhttps://publications.gc.ca/collections/collection_2021/isde-ised/co24/Co24-3-7-1392-1985-eng.pdf