IEEE Journal on Selected Areas in Communications

Issue 1 • January 1985

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Displaying Results 1 - 25 of 32
  • [Front cover and table of contents]

    Publication Year: 1985, Page(s): 0
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    Freely Available from IEEE
  • [Back cover]

    Publication Year: 1985, Page(s): 0
    Cited by:  Papers (1)
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  • Editorial: Breaking Away

    Publication Year: 1985, Page(s):1 - 2
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  • Dedication: Marcel Bouchard

    Publication Year: 1985, Page(s): 3
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  • Guest Editorial

    Publication Year: 1985, Page(s):4 - 7
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    Freely Available from IEEE
  • The International Telecommunication Union and Broadcasting from Satellites - A Brief Review

    Publication Year: 1985, Page(s):8 - 12
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    The International Telecommunication Union (ITU) conducts a continuing and extensive activity with regard to the broadcasting-satellite service (BSS). First, in appropriate administrative radio conferences, the ITU a) allocates frequency bands for the BSS, sometimes shared with other radiocommunications services, b) establishes the conditions for such frequency sharing, c) plans orbit and frequency... View full abstract»

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  • An Introduction to the RARC '83 Plan for DBS Systems in the Western Hemisphere

    Publication Year: 1985, Page(s):13 - 19
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (641 KB)

    The 1983 Regional Administrative Radio Conference (RARC '83), sponsored by the International Telecommunication Union (ITU), adopted a plan that assigns to each country in ITU Region 2 (the western hemisphere) the frequencies and orbital positions it can use for direct broadcasting satellite (DBS) systems in the 12.2-12.7 GHz band. An earlier ITU conference, the 1977 World Administrative Radio Conf... View full abstract»

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  • The Spectrum Orbit Utilization Program (SOUP) Used for DBS Plan Analysis at RARC '83

    Publication Year: 1985, Page(s):44 - 49
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (670 KB)

    This paper describes the history, functions, and usage of the program that was used to analyze the plans for direct broadcast satellite service developed in the course of the 1983 Regional Administrative Radio Conference for ITU Region 2. Given the requirements for direct broadcast service by the administrations, the conference delegates 1) developed the appropriate technical parameters; 2) made t... View full abstract»

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  • HDTV - A DBS Perspective

    Publication Year: 1985, Page(s):76 - 86
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1145 KB)

    For almost all viewers, today's television is perfectly acceptable when displayed on a 19 in or smaller set. However, for larger sets (e.g., 5 ft diagonal), many viewers object to the lack of sharpness and the visibility of the scanning lines. High-definition television (HDTV) can provide sharp images on larger sets and eliminate the line-visibility problem. Moreover, the HDTV picture will have a ... View full abstract»

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  • Propagation Considerations for Satellite Broadcasting at Frequencies Above 10 GHz

    Publication Year: 1985, Page(s):100 - 110
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1168 KB)

    At frequencies above 10 GHz, tropospheric propagation effects can significantly alter signal transmission performance. Important phenomena on earth-satellite (slant) paths include attenuation and sky noise increases resulting from atmospheric gases, clouds, and precipitation, depolarization by raindrops and ice crystals, and refractive effects, particularly at low path elevation angles. Various pr... View full abstract»

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  • Spacecraft Technology for Broadcasting Satellites - An Update

    Publication Year: 1985, Page(s):111 - 125
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2428 KB)

    This paper surveys the special technologies for presently conceived direct broadcast satellite (DBS) projects using high RF power in the band 12.2-12.7 GHz, allocated to the broadcasting-satellite service in the western hemisphere. The technologies include launch vehicles, shapedbeam antennas, traveling wave tubes (TWT's), electronic power conditioners (EPC's) for TWT's, lightweight high-power sol... View full abstract»

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  • An Assessment of the Potential Terrestrial Interference Due to Direct Broadcast Satellite Television Receivers

    Publication Year: 1985, Page(s):148 - 154
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    The potential interference of spurious, radiation from the local oscillators of direct broadcast satellite (DBS) television receivers to terrestrial 11 GHz microwave radio services is examined. Typical parameters for DBS receivers are identified and used in a computer simulation to calculate the aggregate effect of a large number of units distributed about a terrestrial repeater site. The results ... View full abstract»

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  • The Design and Planning of Feeder Links to Broadcasting Satellites

    Publication Year: 1985, Page(s):181 - 185
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (509 KB)

    A feeder link is the portion of a broadcasting-satellite system which provides the connection from the earth to the broadcasting satellite. Quality objectives for feeder links are normally well above the corresponding objectives for downlinks. The parameters which affect signal quality are examined. It is shown that the greatest control over theC/Nratio lies with the selection of suitab... View full abstract»

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  • HF Satellite Sound Broadcasting - A Preliminary Assessment

    Publication Year: 1985, Page(s):186 - 203
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1541 KB)

    This paper examines in a preliminary way the technical factors associated with the use of the HF band for satellite sound broadcasting. Numerical results are presented for an example geostationary satellite system operating in the 26 MHz band. An analysis of the electrical characteristics and the far-field pattern of a whip antenna used on low-cost HF portable receivers is presented in order to co... View full abstract»

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  • Threshold Extension in DBS System Design

    Publication Year: 1985, Page(s):135 - 147
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1904 KB)

    Application of the threshold-extension technique in a DBS environment is described. For DBS signals comprising analog-video and OQPSK modulated data, computer simulations are used to determine optimum deviations of the RF carrier by video and OQPSK signals. With these deviations, parameters of a second-order phase-locked loop (PLL) threshold extension demodulator are optimized to yield a static-th... View full abstract»

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  • DBS Television Systems Under Development in the United States of America

    Publication Year: 1985, Page(s):219 - 223
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    Three types of direct-to-home broadcast satellite (DBS), or "DBS-like," services are currently being developed or used in the United States. The earliest service to be used depends upon low-power 5-10 W 6/4 GHz2satellite transponders, which operate in the fixed-satellite service (FSS) to provide predominantly unscrambled TV programs to cable head ends and other local terrestrial distrib... View full abstract»

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  • Development and Use of the Computer Software Package for Planning the 12 GHz Broadcasting-Satellite Service at RARC '83

    Publication Year: 1985, Page(s):36 - 43
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (936 KB)

    An extensive computer software package was developed for use at RARC '83, the 1983 Regional Administrative Radio Conference, to plan the broadcasting-satellite service at 12 GHz in Region 2 (the western hemisphere). A panel of experts from eight Region 2 administrations was responsible for the software development. The software used at the conference was the product of cooperative combined efforts... View full abstract»

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  • First-Generation RCA Direct Broadcast Satellites

    Publication Year: 1985, Page(s):126 - 134
    Cited by:  Patents (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (976 KB)

    In October 1982, the Satellite Television Corporation (STC), a subsidiary of the Communications Satellite Corporation (Comsat), contracted with RCA Astro-Electronics to design, develop, and manufacture the first direct broadcast satellite for use in the United States. The contract is for two spacecraft with an early 1986 launch from either Kourou, Guiana, or Kennedy Space Center, Florida. The prog... View full abstract»

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  • Insurance for Space Systems

    Publication Year: 1985, Page(s):211 - 214
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    This paper describes the practice of insurance of commercial communications satellites. A historical review of the insurance of previous satellites is included, starting with the initial Comsat coverage of Intelsat satellites and continuing with the coverage of domestic communications satellites of the United States and other administrations. The types of insurance offered and their typical associ... View full abstract»

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  • Satellite Sound Broadcasting Around 1 GHz

    Publication Year: 1985, Page(s):204 - 210
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    This paper presents the technical factors affecting the design of a geostationary satellite sound broadcasting system operating around 1 GHz to serve low-cost consumer-quality portable and automobile receivers. The technical characteristics for such a system are under study in a number of countries in preparation for the 1985/1988 ITU Space Services Planning Conference.The first session will make ... View full abstract»

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  • International DBS Regulations Brought Down to Earth

    Publication Year: 1985, Page(s):20 - 24
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    In this review of the internationally agreed procedural requirements for bringing into use satellites providing a broadcast service to western hemisphere countries in the 12.2-12.7 GHz band, using feeder links in the 17.3-17.8 GHz band, the author charts a course for the satellite engineer through the international "regulatory" maze. Without obscure legal technicalities, the paper presents the ess... View full abstract»

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  • Downlinks for DBS: Design and Engineering Considerations

    Publication Year: 1985, Page(s):171 - 180
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (904 KB)

    The design of the downlink in a DBS system requires optimization of a set of complex interrelated objectives. This paper describes the objectives, demonstrates the interrelationships, and discusses the process of selecting system design parameters to best balance the objectives of the DBS business entity. The Satellite Television Corporation's (STC's) system design is presented as a case study. Pe... View full abstract»

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  • Techniques for Increasing the Picture Quality of NTSC Transmissions in Direct Satellite Broadcasting

    Publication Year: 1985, Page(s):57 - 64
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1016 KB)

    This paper discusses the NTSC color television system and the possible increases in picture quality achievable from new technology infusions over the next decade. Techniques for improved NTSC are described, as are the new extended-definition (EDTV) and high-definition (HDTV) alternatives that have been proposed for new direct broadcasting satellite services. Comparisons of the features of each are... View full abstract»

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  • Direct Broadcast Satellite Systems in Europe

    Publication Year: 1985, Page(s):224 - 232
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (960 KB)

    The 1977 World Broadcasting Satellite Administrative Radio Conference (WARC'77) outlined the rules for national DBS systems in Europe. Since that time, technological developments and economic uncertainties have influenced all of the proposed national systems. This paper reports on the status of each national DBS project, outlining the key uncertainties and highlighting the current directions of th... View full abstract»

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  • Potential Interference from Terrestrial Sources into Direct Broadcast Satellite Home Receiving Systems

    Publication Year: 1985, Page(s):155 - 166
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (976 KB)

    Potential interference sources into direct broadcast satellite (DBS) home receiving equipment and the means of reducing the effects are discussed in this paper. Interference sources are divided into two categories: those that enter at the receiving antenna microwave equipment, and those that enter at the indoor unit or at the coaxial cable connecting the antenna to indoor equipment. The results of... View full abstract»

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Aims & Scope

IEEE Journal on Selected Areas in Communications focuses on all telecommunications, including telephone, telegraphy, facsimile, and point-to-point television, by electromagnetic propagation.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Muriel Médard
MIT