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IRE Transactions on Communications Systems

Issue 2 • Date June 1961

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Displaying Results 1 - 14 of 14
  • [Front cover and table of contents]

    Publication Year: 1961, Page(s): 0
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    Freely Available from IEEE
  • The Examination of Error Distributions for the Evaluation of Error-Detection and Error-Correction Procedures

    Publication Year: 1961, Page(s):101 - 106
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (538 KB)

    The factors influencing the speed at which data can be transmitted, and those determining the error rate, are summarized as an introduction to a statement in respect to error rates measured. Different applications for data transmission are considered in relation to the amount of error correction which may be justified. Various forms of error detection and correction are illustrated, and the probab... View full abstract»

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  • RF Spectra and Interfering Carrier Distortion in FM Trunk Radio Systems With Low Modulation Ratios

    Publication Year: 1961, Page(s):107 - 115
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (787 KB)

    This paper provides formulas for evaluating RF spectral shape and interfering carrier distortion in connection with FM trunk radio systems having low modulation ratios. Numerical results are given for 1800-speech-channel systems. The curves showing interfering carrier distortion are of particular interest in connection with systems using RF multiplex (i.e., systems consisting of a number of carrie... View full abstract»

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  • Consideration of Nonlinear Noise and its Testing in Frequency Division Multiplex Voice UHF Radio Communication Systems

    Publication Year: 1961, Page(s):115 - 129
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1201 KB)

    In UHF radio communications systems, the thermal noise limits the performance under weak received signal conditions. When the signal is strong, the nonlinear noise (sometimes called the intermodulation noise) may become the limiting factor. it is, therefore, imperative to control the intermodulation distortion contribution from the system components by careful equipment design and from the medium ... View full abstract»

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  • Model of Impulsive Noise for Data Transmission

    Publication Year: 1961, Page(s):130 - 137
    Cited by:  Papers (46)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (731 KB)

    It has often been found more necessary in the engineering of data transmission systems to consider impulsive noise than conventional Gaussian white noise. A model is proposed for the impulsive noise, which describes empirically an amplitude distribution and a time distribution. Because the latter has been described in experimental work principally in terms of error occurrences, the description is ... View full abstract»

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  • Diversity Combining for Signals of Different Medians

    Publication Year: 1961, Page(s):138 - 145
    Cited by:  Papers (2)  |  Patents (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (666 KB)

    Over-the-horizon communication systems normally use two identical antennas at each end. It is shown that an asymmetrical arrangement, for example, 6o'( )60' 30'( )30' is better than a symmetrical arrangement when both antennas at one end are used for diversity reception and the larger antenna at the other end is used for transmitting. This arrangement is important because for a given performance i... View full abstract»

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  • Diversity Reception for Meteoric Communications

    Publication Year: 1961, Page(s):145 - 148
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (697 KB)

    One of the first goals of the research effort on meteoric communications was to establish the advantage, if any, of diversity reception. Three types of diversity were investigated: frequency, space, and polarization. Nearly perfect correlation of the signals was found for frequency diversity reception with a frequency separation of 4 kc and for space diversity reception for antenna spacings of up ... View full abstract»

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  • Digital Computer Simulation for Prediction and Analysis of Electromagnetic Interference

    Publication Year: 1961, Page(s):148 - 159
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1248 KB)

    A digital computer simulation program is described for use by communications systems and equipment designers who must consider electromagnetic interference. The program determines the interference experienced by a test receiver in a signal environment resulting from its associated transmitter, a large deployment of potentially interfering transmitters, and by atmospheric and cosmic noise sources. ... View full abstract»

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  • Preliminary Study of a Miniature Underwater Cable System

    Publication Year: 1961, Page(s):159 - 164
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    Certain aspects of feasibility of a miniature submarine cable-transmission system have been studied. The system is small and light, and designed for use in military applications as an expendable item where submarine cables of conventional design would be uneconomical. It weighs about 125 pounds per mile, transmits 1.35 million pulses per second of a pulse-code modulated (PCM) signal, and is powere... View full abstract»

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  • Development of Sydney, Nova Scotia-St. John's, Newfoundland Canadian National Telegraphs Microwave System

    Publication Year: 1961, Page(s):165 - 175
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1545 KB)

    A 650-mile radio-relay system composed of 22 "lineof-sight" paths was constructed to supplement the Canadian National Communications between Sydney, Nova Scotia, and St. John's, Newfoundland. Relay repeater points were chosen by means of all available contoured maps and on-site surveys of the various points, bearing in mind radio transmission characteristics and also accessibility for maintenance.... View full abstract»

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  • Analytical Prediction of Electromagnetic Environments

    Publication Year: 1961, Page(s):175 - 185
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1204 KB)

    The problem of transmitting digital data through electromagnetic environments of high ambient-pulse density is one of growing concern. The appearance of pulsed radar in the lO-Mw range, and sensitive receivers in the - 100-dbm range, will aggravate this situation. This paper discusses three efforts made by the government to predict the status of future environments. In all cases, the basic techniq... View full abstract»

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  • Theoretical limitations on frequency and time diversity for fading binary transmissions

    Publication Year: 1961, Page(s):186 - 187
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (223 KB)

    The purpose of this note is to point out that for either frequency diversity or time diversity, the dependence of required transmitted power on number of branches is quite different than for space diversity. For both frequency- and time-diversity techniques the saving of transmitter power can come only from the first factor above (that is, the averaging of fluctuations), since the total mean recei... View full abstract»

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  • Evaluation of νth-law devices

    Publication Year: 1961, Page(s):188 - 189
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (149 KB)

    Most of the work which has been done in the analysis of a νth-law device is concerned with the statistical properties of the output. Apparently, a general investigation to determine the optimum value of ν for a νth-law device has never been made. Therefore, a simple method of evaluating a νth-law device is necessary. This may be done by choosing the optimum value of... View full abstract»

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  • [Back matter]

    Publication Year: 1961, 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