00000nam 2200000zi 4500 9.876714 CaOODSP 20221107164759 m o d f cr |n||||||||| 190719e19750327oncd|||#ob f000 0|eng d CaOODSP eng rda CaOODSP n-cn--- Co24-127/1975E-PDF Final technical report on high speed continuous data modem / by Canadian Marconi Company, Telecommunications Division. [Ottawa] : [Department of Communications], March 27, 1975. 1 online resource (1 volume (various pagings)) : figures text txt rdacontent computer c rdamedia online resource cr rdacarrier Digitized edition from print [produced by Innovation, Science and Economic Development Canada]. Includes bibliographical references (page 59-60). "Modulation schemes for application to continuous high bit rate digital transmission in terrestrial and satellite communication systems were studied, and their practical implementations. The major system limitation is the linearity ofthe high power amplifiers used in the transmitter. It is concluded that with present day technology QPSK (quadrature phaseshift keying) is optimum for satellite systems and QPR (quadrature partial response) is optimum for terrestrial systems.The report includes an assessment of parameters causing degradation from ideal system performance. A companion report under separate cover discusses market aspects"--Abstract. gccst Satellites gccst Telecommunications Canada. Department of Communications. Canadian Marconi Company. PDF 9.29 MB https://publications.gc.ca/collections/collection_2019/isde-ised/Co24/Co24-127-1975-eng.pdf