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IEEE Journal on Selected Areas in Communications

Issue 1 • Date 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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    Freely Available from IEEE
  • 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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  • 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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  • 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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  • Experimental Results Supporting the Determination of Service Quality Objectives for DBS Systems

    Publication Year: 1985, Page(s):87 - 99
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1496 KB)

    A summary of the results of a joint United States and Canadian program on subjective measurements of the picture degradation caused by noise and interference on an NTSC encoded color television signal is given in this paper. The effects of system noise, cochannel and adjacent channel interference, and both single entry and aggregate as well as a combination of these types of interference were subj... View full abstract»

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  • The Flexible Domestic Regulatory Approach for Direct Broadcast Satellite Systems in the United States

    Publication Year: 1985, Page(s):50 - 56
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (760 KB)

    Of the eight direct broadcast satellite (DBS) system applicants originally granted conditional construction permits in 1982 for service within the United States, four have made sufficient progress in construction or contracting for construction to warrant the awarding of launch authority by the Federal Communications Commission. Action will soon be taken that could allow up to seven additional app... View full abstract»

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  • Frequency Sharing Between the Broadcasting-Satellite Service and Other Radiocommunication Services

    Publication Year: 1985, Page(s):25 - 35
    Cited by:  Patents (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1072 KB)

    Most radiocommunication services, including the space services, share their frequency allocations with other services. Frequency sharing involving the broadcasting-satellite service is particularly difficult because of several factors. The allocations differ between the three ITU Regions of the world; the characteristics of broadcasting-satellite systems make them not only quite vulnerable to cert... 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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  • Factors Affecting the Choice of Frequency Band for DBS Systems in the United States

    Publication Year: 1985, Page(s):167 - 170
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    The prospective operator of a system intended primarily for broadcasting directly to homes in the United States (as opposed to distributing programming to CATV head ends or terrestrial broadcasting stations) must choose between two frequency bands: 12.2-12.7 GHz and 11.7-12.2 GHz. The first of these bands is allocated to the broadcasting-satellite service (BSS) with the assignment of frequencies, ... View full abstract»

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  • Broadcasting-Satellite Service in India

    Publication Year: 1985, Page(s):233 - 245
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1504 KB)

    This paper traces the development of the broadcasting-satellite service (BSS) in India. It describes the key system test and demonstration experiments conducted in India prior to the development of an operational first-generation domestic satellite system. The BSS component of this system, the Indian National Satellite System (INSAT-1), has a character quite different from BSS or DBS developments ... 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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  • The EBU C-MAC/Packet System for Direct Broadcasting by Satellite

    Publication Year: 1985, Page(s):65 - 75
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1152 KB)

    After three years of research and development work conducted by an international team, the EBU has recommended the adoption of a system termed "C-MAC/packet," for direct satellite broadcasting using 625-line television standards. This system is based on the generalized use of time-division multiplexing, the sequential transmission of time-compressed luminance and color-difference components, and t... 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 Programming

    Publication Year: 1985, Page(s):215 - 218
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    There are four essential elements for a successful broadcasting-satellite system: an international regulatory framework and domestic approval, financial backing, the space and earth technology and hardware, and the programming to attract viewers-and subscribers. Without the latter, no system can be commercially viable, nor will the DBS industry thrive. This paper discusses the kind of programming ... 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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  • 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 (1184 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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  • 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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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