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Proceedings of the IEEE

Issue 2 • Feb. 1981

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Displaying Results 1 - 21 of 21
  • [Front cover and table of contents]

    Publication Year: 1981, Page(s): c1
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    Freely Available from IEEE
  • Scanning the issue

    Publication Year: 1981, Page(s):147 - 148
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  • Limits to plasma science

    Publication Year: 1981, Page(s):149 - 158
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1272 KB)

    Since fundamental limits to plasma science are the well-known ones of relativity and quantum mechanics, various practical limits sure discussed for plasma science in several domains of current interest: applications (mainly controlled thermonuclear fusion, both magnetic confinement and ablative compression) investigation of natural plasma (in space near earth and solar system and in astrophysics).... View full abstract»

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  • Systems engineering: Fundamental limits and future prospects

    Publication Year: 1981, Page(s):158 - 166
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1117 KB)

    Presently perceived fundamental limits in systems engineering are described along with contemporary and projected future efforts to reach, circumvent, or ameliorate the effects of these limits. To present an overall view of the many frontiers being explored and extended in the realm of systems, man and cybernetics, we first described a set of twenty-five objectives for systems engineering in the 1... View full abstract»

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  • Mathematical considerations in seeking fundamental limits to professional communication processes and effects

    Publication Year: 1981, Page(s):167 - 170
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (423 KB)

    It is unusual (and often, unfashionable) to seek fundamental limits to human phenomena such as professional communication. It is axiomatic that human potential is virtually unlimited and, therefore, to suggest such limits is considered (by some) to be almost inhuman. Nevertheless, if it can be given that professional communication primarily involves mass communication principles, then fundamental ... View full abstract»

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  • Fundamental limitations in antennas

    Publication Year: 1981, Page(s):170 - 182
    Cited by:  Papers (292)  |  Patents (87)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (980 KB)

    Four fundamental limitations in antennas have been identified in the areas of: electrically small antennas, superdirective antennas, superresolution antennas, and high-pin antennas. All exhibit roughly exponential increase in cost factors with performance increase beyond the robust range. This paper reviews these limitations. Electrically small antennas are analyzed via spherical mode theory, with... View full abstract»

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  • Fundamental limits on EMC

    Publication Year: 1981, Page(s):183 - 195
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1195 KB)

    Both fundamental and state-of-the-art limits are treated, with emphasis on the former. Fundamental limits result from both natural and man-made electromagnetic noise which then affect two basic ratios, signal-to-noise (S/N) and extraneous-input-to-noise (I/N). Tolerable S/N values are discussed for both digital and analog communications systems. These lead to tolerable signal-to-extraneous-input (... View full abstract»

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  • Fundamental limitations caused by RF propagation

    Publication Year: 1981, Page(s):196 - 209
    Cited by:  Papers (35)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1414 KB)

    Propagation phenomena affect the design of radio frequency (RF) transmission systems. Propagation phenomena limit the suitability of portions of the frequency band for some applications, limit the reliability of RF transmission systems, and provide a means of coupling unwanted signals from one system to another with the potential of producing interference. The possiblity of interference is the fun... View full abstract»

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  • The transmission capacity of multibeam communication satellites

    Publication Year: 1981, Page(s):209 - 225
    Cited by:  Papers (2)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1721 KB)

    The transmission capacity which can be provided by a geosynchronous multiple-beam satellite employing frequency reuse is studied. Like all communication channels, satellite capacity is limited by available power, transmission bandwidth, and noise. In addition, factors peculiar to satellite links include cochannel interference among neighboring beams, channel nonlinearity, nonuniformly distributed ... View full abstract»

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  • Limitations on the performance of field-effect devices for logic applications

    Publication Year: 1981, Page(s):226 - 231
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (745 KB)

    The switching time and power dissipation of field-effect devices in integrated logic circuits are obtained using a simple equivalent circuit. It is seen that performance is determined by four basic parameters: channel length, operating voltage, parasitic capacitance, and saturation drift velocity. The effects limiting the optimization of these parameters are examined. It is found that channel leng... View full abstract»

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  • Limits in integrated optics

    Publication Year: 1981, Page(s):232 - 238
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (826 KB)

    A review is given of the characteristics and limits of integrated optics devices and circuits, with emphasis on size, speed, and power consumption. Performance limits and trade offs are discussed for semiconductor lasers, filters, switches and modulators, and bistable devices. View full abstract»

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  • Fundamental limits in information theory

    Publication Year: 1981, Page(s):239 - 251
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1239 KB)

    Shannon information theory is in essence a study of "fundamental limits." In this paper we attempt to give the reader a taste of the nature of these limits and of how they relate to real situations in communication. View full abstract»

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  • Audio and video bit-rate reduction

    Publication Year: 1981, Page(s):252 - 262
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1317 KB)

    We address the problem of estimating limits of bit-rate reduction for audio and video information. Binary encoding of such signals is performed by a myriad of different techniques which we classify into two categories. The goal of "waveform" encoders is simply replication of waveforms, whereas "parameter" encoders attempt to extract and transmit only the basic features necessary for the specific a... View full abstract»

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  • Fundamental limits in optical communication

    Publication Year: 1981, Page(s):262 - 266
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (590 KB)

    This paper addresses fundamental limits on the ability to communicate over optical fiber and optical free-space channels. The underlying limits on the sensitivity of optical receivers dictated by quantum effects are reviewed. Receiver sensitivity limitations caused by background light, dark current, post detection amplifier noise, and transmitter imperfection are then considered. Finally the limit... View full abstract»

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  • Fundamental limits in digital information processing

    Publication Year: 1981, Page(s):267 - 278
    Cited by:  Papers (52)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1503 KB)

    Computing and information processing are limited by a variety of factors. Some of these, such as the need to dissipate energy, the high voltage requirement, and the difficulty of removing heat are fundamental in that they have a basis in physical theory and in knowledge of the properties of materials. Limits arising from the physics of devices are also in this class. It appears that many of these ... View full abstract»

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  • Comments on "Electric dyadic Green's functions in the source region"

    Publication Year: 1981, Page(s):282 - 285
    Cited by:  Papers (10)
    Request permission for commercial reuse | PDF file iconPDF (510 KB)
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  • Hysteretic system for neural-type circuits

    Publication Year: 1981, Page(s):285 - 287
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    A first-order system is introduced which through the incorporation of hysteresis yields results of the type recently found in neural-type circuits. Analog computer experiments verify the properties of the system. View full abstract»

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  • Further comments on "Integrable insensitive subaudio-sine-wave generator using DVCVS/DVCCS"

    Publication Year: 1981, Page(s): 285
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  • Optimal filtering

    Publication Year: 1981, Page(s): 288
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    Freely Available from IEEE
  • Book alert

    Publication Year: 1981, Page(s): 288
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  • [Back cover]

    Publication Year: 1981, Page(s): c4
    Cited by:  Papers (5)
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    Freely Available from IEEE

Aims & Scope

The most highly-cited general interest journal in electrical engineering and computer science, the Proceedings is the best way to stay informed on an exemplary range of topics.

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Meet Our Editors

Editor-in-Chief
H. Joel Trussell
North Carolina State University