00000nam 2200000zi 4500 9.890813 CaOODSP 20221107172717 m o d f cr mn||||||||| 200821s1996 onca ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre Co24-3/8-1996-4E-PDF Paiement, Richard V., 1965- author. Literature review of satellite-earth propagation at L-band for broadcasting services for mobile, portable and fixed receivers / Richard Paiement. Satellite-earth L-band propagation - digital radio broadcasting Ottawa : Communications Research Centre = Centre de recherches sur les communications, 1996. 1 online resource (44 pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier CRC TN ; no. CRC TN 96-004 "Ottawa, March 1996." Digitized edition from print [produced by Innovation, Science and Economic Development Canada]. Includes bibliographical references (pages 36-44). "Digital Radio Broadcasting (DRB) is a new L-band audio service that will replace existing AM and FM services in Canada starting in 1997; the CRTC has been accepting license applications since October 1995. Initial system roll-out is limited to terrestrial delivery, but future complementary satellite delivery will provide much more flexibility. In an effort to characterise the satellite channel for land mobile reception of DRB services, this document reviews existing literature that presents relevant propagation measurement results. A variety of reception conditions are considered, including mobile, portable, hand-held and fixed reception in open, rural, mountainous, wooded, suburban, urban and indoor environments. Fading statistics are presented according to these reception conditions, as well as elevation angle, presence of foliage and signal bandwidth. A summary of published propagation measurements is presented, including signal impairments and resulting fade mechanisms. The reviewed data indicates that the greatest cause of signal impairment is fading from tree shadowing, predominant in some rural and most suburban environments. Canadian authorities (government and industry) involved in DRB agree that urban and indoor reception will not be achieved via simple satellite delivery, and will require terrestrial on-channel repeaters to boost the signal strength. With this in mind, the results presented for urban and indoor reception are of less interest than results for other reception environments. This report also features a brief review of proposed propagation models, as well as a listing of various transmission platforms used in measurement campaigns and an exhaustive list of relevant references"--Executive summary. Issued also in print format. Includes summaries in English and French. Digital audio broadcasting. Radio wave propagation. Radio numérique. Ondes radioélectriques Propagation. Communications Research Centre (Canada), issuing body. CRC technical note ; no. 96-004. (CaOODSP)9.882494 PDF 1.64 MB https://publications.gc.ca/collections/collection_2020/isde-ised/Co24/Co24-3-8-1996-4-eng.pdf