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Communications Society Magazine, IEEE

Issue 6 • Date November 1977

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Displaying Results 1 - 22 of 22
  • [Front cover and table of contents]

    Page(s): 0
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    Freely Available from IEEE
  • People in the news

    Page(s): 1
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    Freely Available from IEEE
  • ComSoc spotlight

    Page(s): 2 - 3
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    Freely Available from IEEE
  • Society & chapter news

    Page(s): 3
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    Freely Available from IEEE
  • An IEEE meeting on subjective testing of voiceband codecs

    Page(s): 4 - 5
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (175 KB)  

    Subjective testing of existing and proposed communication systems is an important element of network planning and equipment design. With the evolution over the years of world telecommunications, the nature and levels of impairments experienced by system users have changed,and as a consequence, a variety of subjective testing procedures have come into existence. Discusses the technologies, communications services, and applications that support effective network strategic planning. View full abstract»

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  • Communications technology: 25 years in retrospect

    Page(s): 6 - 8
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    Reports on the technologies, applications, systems, and communications facilities that have been developed over the past 25 years. View full abstract»

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  • Bulletins

    Page(s): 9
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  • The planetary exploration program

    Page(s): 10 - 11
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    The U. S. program for space exploration of the planets began with the Mariner 2 flyby of Venus in 1962. Since then a series of Mariners have gone to Mercury and Mars, in addition to Venus. Pioneer-class spacecraft have flown through the asteroid belt and have passed by Jupiter. The Viking mission carried Out a spectacularly successful series of measurements at Mars. These past missions will be followed shortly by recently launched Voyager flybys of Jupiter and Saturn in 1977 and by Pioneer probes and orbiter to Venus in 1978. These missions have stressed exploration. Now there are two additional goals involving the well-being of Man which are looming on the space horizon. View full abstract»

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  • From 8-1/3 bits/s to 100,000 bits/s in ten years

    Page(s): 12 - 15
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    During the first 11 years of its planetary program, the United States sent seven spacecraft to explore the inner planets: Venus, Mars, and Mercury. At the beginning of this period, the telemetry data rate was 8-1/3 bits/s; by the end of the period it was 120 kbits/s, a more than ten-thousand-fold increase. To identify the major factors involved, the form of a deep space telemetry system is described and the values of the major factors for each of the seven spacecraft are given. The amount of the improvement in each is computed and the way in which the improvement was achieved is discussed. Finally, some possible directions for possible future improvements are suggested. View full abstract»

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  • Planetary telecommunication development during the next ten years

    Page(s): 16 - 19
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    The past Mariner missions to the inner planets have greatly increased our knowledge about Mars, Venus, and Mercury. The continued success of these missions has been enhanced by the evolution of communication technology, with the main growth in the ground capability. The missions during the next decade will concentrate on the outer planets, with requirements to operate over greatly increased ranges in hostile radiation environments, and for reduced weight to allow the transportation of probes. The communication requirements will be mainly achieved by increases in flight equipment performance, new larger antennas, and operation at higher frequencies. The rate of growth of the communication capability is heavily dependent on the type of missions planned. However, we do have the capability to provide significant data return from the outer planets. View full abstract»

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  • The search for extraterrestrial intelligence: Telecommunications technology

    Page(s): 20 - 23
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    Efforts to discover evidence of intelligent extraterrestrial life have become not only feasible, but respectable. Fledgling observational projects have begun that will use stateof-the-art hardware to develop sophisticated receiving and data processing systems. The rationale behind the Search for Extraterrestrial Intelligence (SETI), the manner in which the program is taking shape, and the implications for telecommunications are described. We conclude that the breadth of technological development required for the detection of signals from our galactic brethren has particular relevance for the future of telecommunications in earth-oriented uses. View full abstract»

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  • Calendar of events

    Page(s): 24
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  • NTC '77 conference brief

    Page(s): 25
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  • Call for papers

    Page(s): 26 - 27
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  • What's new

    Page(s): 27
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  • Book reviews - Imaging in 3-Dimensions: Three dimensional imaging techniques

    Page(s): 28
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  • International abstracts

    Page(s): 29
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  • Correction

    Page(s): 29
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    First Page of the Article
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  • U.S. Abstracts

    Page(s): 30 - 31
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  • [Back cover]

    Page(s): c4
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Aims & Scope

This Periodical ceased publication in 1978. The current retitled publication is 

IEEE Communications Magazine.

Full Aims & Scope