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IRE Transactions on Communications Systems

Issue 4 • December 1960

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Displaying Results 1 - 15 of 15
  • [Front cover and table of contents]

    Publication Year: 1960, Page(s): 0
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    Freely Available from IEEE
  • Military Radio Communications Equipment Cost-Design Relationships

    Publication Year: 1960, Page(s):203 - 206
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (445 KB)

    A method is presented for determining the relationships between the "costs" (size, weight, dollars) and the electrical characteristics (frequency, bandwidth, input power, output power, atenna gain) of radio equipment used in military communications systems. The compilation of pertinent data is described, and a series of empirical "trade-off" curves displaying cost-design relationships as they exis... View full abstract»

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  • Communication Networks for Digital Information

    Publication Year: 1960, Page(s):207 - 214
    Cited by:  Papers (2)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (893 KB)

    Considerable advance has been made in the automation of clerical work over the last ten years, and the movement continues unabated. There is thus an ever-increasing need for means of telecommunication suitable for the exchange of information between computers and remote input and output equipment (i.e. data transmission). As soon as large organizations, or organizations spread over a large geograp... View full abstract»

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  • Propagation, Noise, and General Systems Considerations in Earth-Space Communications

    Publication Year: 1960, Page(s):214 - 221
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (792 KB)

    As man's ability to escape the attraction of the earth's gravitational field increases, the science of earth-space communications becomes more and more important. In this paper, an attempt is made to analyze the relevant propagation, noise and general system aspects of earth-space systems and to predict the operating frequencies for maximum range. The earth's atmosphere is shown to be nearly trans... View full abstract»

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  • Analysis of a Phase-Modulation Communications System

    Publication Year: 1960, Page(s):221 - 227
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (599 KB)

    A communication system is analyzed which utilizes phase modulation (PM) and phase detection. The analysis shows that when the total radio frequency (RF) power level is significantly above the receiver threshold, a margin of safety exists which may be traded for additional signal-to-noise ratio (SNR) at the demodulated output of the receiver. In this respect the PM system is similar to FM communica... View full abstract»

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  • Distortion of Angle-Modulated Signals in Misaligned Linear Filters

    Publication Year: 1960, Page(s):228 - 232
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    Differences in distortion are calculated for sinusoidally phase modulated signals that are passed through dissimilar single-tuned RLC filters. The differences in distortion of two identical signals are related to filter tolerances. A two-tone phase modulated signal is shown to experience significant distortions relative to a single-tone phase modulated signal, although the difference tone is hardl... View full abstract»

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  • Performance of Combined Amplitude and Phase-Modulated Communication Systems

    Publication Year: 1960, Page(s):232 - 237
    Cited by:  Papers (36)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (539 KB)

    The performance of two types of digital phase-and amplitude-modulated systems is investigated for the high signal-to-noise ratio region. Approximate expressions for the probability of error and channel capacity of the more optimum of these two systems are compared with corresponding expressions for probability of error and channel capacity for a digital phase-modulated system. It is shown that the... View full abstract»

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  • Digital Phase Control Techniques

    Publication Year: 1960, Page(s):237 - 246
    Cited by:  Papers (9)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (876 KB)

    An analysis of a partially digitized phase-locked loop using Z -transform sampled data theory is presented. Responses are obtained at various junctions of the loop for both a step frequency input and for a sinusoidal frequency input. These responses are compared with the corresponding responses for an analog phaselocked loop. Stability criterion and root locus ... View full abstract»

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  • Simplified Baseband Diversity Combiner

    Publication Year: 1960, Page(s):247 - 249
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    In conventional FM receivers, the gain of the limiters rises during a fade to maintain constant output. The resulting sharp rise in noise complicates the problem of diversity combining, requiring the combiner to provide a very high degree of suppression of noisy signals. By suitable limiter design, the necessary AM suppression can be obtained without affecting average receiver gain, permitting the... View full abstract»

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  • Communication by Polar-Orbit Satellite Relay

    Publication Year: 1960, Page(s):250 - 254
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (668 KB)

    Aircraft on transpolar flights do not have highly reliable noise-free communications. By the use of polar-orbiting satellite repeaters, UHF communications can be utilized. Active, wideband repeaters are proposed in the satellite, using equipment similar to existing hardware. A system is discussed for a 5000-mile altitude satellite orbit and a 3500-mile ground distance separation. Complete system p... View full abstract»

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  • A Slope-Feedback Method for Speech Compression

    Publication Year: 1960, Page(s):254 - 258
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (541 KB)

    This paper deals with a slope-feedback method for compressing the bandwidth of speech signals. The maximum amount of compression is estimated from a quantity called the speech detail factor. This is analogous to the familiar picture detail factor. Measurements of the former show that the following compression ratios are possible 1) a two-fold compression of "telephone" quality speech, 2) almost fi... View full abstract»

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  • Improved Multiplex Voice Frequency Carrier Systems Using New Audio Filters

    Publication Year: 1960, Page(s):258 - 262
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (895 KB)

    Using resonators built with high " Q " ferrite-cored inductors and suitably selected plastic film capacitors, improved band-pass and band-elimination filters have been designed which allow the accommodation of duplex high-speed telegraphy channels in a mid-band-speech carrier circuit, with small degradation in voice quality and with negligible cross-talk. It is ... View full abstract»

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  • A Thin-Route Beyond-the-Horizon VHF System in the Middle East

    Publication Year: 1960, Page(s):263 - 271
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    The application of thin-route technique in an economical integrated small-scale VHF system in the 156-174-Mc band is described. The system provides point-to-point multi-channel voice, teletype and mobile communications between the main office of the Trans-Arabian Pipe Line Company in Beirut, Lebanon, and pumping stations and mobile units along the route of the pipeline through Lebanon, Syria, Jord... View full abstract»

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  • Correction to "Comparison of PSK vs FSK and PSK-AM vs FSK-AM binary-coded transmission systems"

    Publication Year: 1960, Page(s): 272
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (67 KB)

    The author of the above-named work, which appeared on pages 87-100 of the June, 1960, issue of these Transactions notes various errors in the list of symbols; equations (47, (48), (56), (57), (59), (66) and (67); text on page 100, and curves 4 & 5 of Fig. 15. View full abstract»

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  • [Back matter]

    Publication Year: 1960, Page(s): 0
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    Freely Available from IEEE

Aims & Scope

This Transactions ceased publication in 1962. The current retitled publication is  IEEE Transactions on Communications.

Full Aims & Scope