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Communications Systems, IRE Transactions on

Issue 3 • Date September 1959

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

    Publication Year: 1959, Page(s): 0
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    Freely Available from IEEE
  • Editorial

    Publication Year: 1959, Page(s):145 - 146
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    Freely Available from IEEE
  • New Developments in FM Reception and Their Application to the Realization of a System of "Power-Division" Multiplexing

    Publication Year: 1959, Page(s):147 - 161
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1422 KB)

    Two techniques-feedforward across a limiter and dynamic trapping-are described to show how the message carried by the weaker of two cochannel FM signals can be extracted with negligible distortion even when its amplitude is much smaller than that of the stronger signal. The development of these techniques marks the end of the stronger-signal capture limitation of FM systems and ushers in more effi... View full abstract»

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  • Probability Distribution of Noise Due to Fading on Multisection FM Microwave Systems

    Publication Year: 1959, Page(s):161 - 167
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (832 KB)

    The probability distribution of expected baseband noise during fading at the end of a multisection microwave radio system is an important consideration in the engineering of a long system. This paper gives measurements of fading on a single path, and derives an estimate of the probability distribution of expected noise due to fading on a particular 68-section system of which the single path is a t... View full abstract»

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  • Concerning Optimum Frequencies for Space Vehicle Communication

    Publication Year: 1959, Page(s):167 - 173
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (739 KB)

    Optimum frequencies for the varied needs of space vehicle communication can best be determined from the estimated system performance. Each of the contributing equipment and propagation factors over the range of the radio frequency spectrum affects the minimum tolerable signal-to-noise power ratio at the receiver. Over the range of the radio frequency spectrum, the behavior of the individual buildi... View full abstract»

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  • Effects of Frequency Cutoff Characteristics on Spiking and Ringing of TV Signals

    Publication Year: 1959, Page(s):173 - 179
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (725 KB)

    The spiking and ringing of TV signals depend upon amplitude and delay characteristics associated with frequency cutoff of transmission. The effects of a variety of cutoff characteristics of both ideal and practical systems on rectangular and sine-squared pulses are illustrated by computed waveforms. The illustrations are arranged to show a) waveform of input pulse, b) amplitude and delay character... View full abstract»

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  • A 2500-Baud Time-Sequential Transmission System for Voice-Frequency Wire Line Transmission

    Publication Year: 1959, Page(s):180 - 184
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (721 KB)

    The Sebit-25 is a full duplex terminal equipment designed to transmit digital data at rates up to 2500 baud. The equipment has been completely transistorized and thoroughly evaluated under environmental conditions. In operation, binary information at 2500 baud is converted to minimum bandwidth and used to amplitude modulate a 2500cycle carrier. The resulting signal is converted to vestigial sideba... View full abstract»

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  • An Experimental Equipment to Reduce Teleprinter Errors in the Presence of Multipath

    Publication Year: 1959, Page(s):185 - 188
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (538 KB)

    Multipath propagation between radio terminals employing binary signalling elements produces a catastrophic rise in teleprinter error rate when the difference in path delay time becomes appreciable compared to the duration of a bit. A commonly used four-channel multiplex system has a bit length of 6.7 milliseconds and is thus seriously affected by differences in path delay greater than approximatel... View full abstract»

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  • Impulsing of Linear Networks in Integrated Data Systems

    Publication Year: 1959, Page(s):189 - 194
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (609 KB)

    Waveforms useful in data transmission may be obtained by impulsing suitable linear networks, and these same networks may be used, in certain cases, as receiving matched filters. A filter design for certain low-pass waveforms is described, together with a procedure for realizing band-pass analogs of these low-pass waveforms. The latter avoid the use of modulators. Practical results are described. View full abstract»

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  • Angular Diversity Reception at 2290 MC Over a 188-Mile Path

    Publication Year: 1959, Page(s):195 - 201
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1181 KB)

    Experiments were performed over the 188-mile Round Hill-Crawfords Hill path at 2290 mc to determine the feasibility of using angular diversity reception in a tropospheric scatter system. Using a 28-foot reflector, two beams were produced with two separate feed systems. The correlation of the signals received on one of the two beams with that received on the other was determined for various spacing... View full abstract»

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  • Real-Time Data Transmission System

    Publication Year: 1959, Page(s):201 - 205
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    A real-time data transmission system was designed for and installed at the Atlantic Missile Range. This system is used to transmit the digital range, azimuth, and elevation coordinates from remotely located AN/FPS-16 radars into the Range Safety IBM 704 Computer at Cape Canaveral, Fla. The radar data is transmitted at a 10PPS rate and is used in the computation of a predicted impact point ten time... View full abstract»

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  • Tropospheric Scatter Path Loss Tests--Florida Bahamas

    Publication Year: 1959, Page(s):205 - 208
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (800 KB)

    Telephone service between the United States and the Bahama Islands is now provided by means of high-frequency radio systems working in the 2-7 mc range. To handle properly the large volume of traffic during the peak winter season requires that more than the present nine circuits be provided. The lack of available frequencies in the 2-7 mc range, together with the comparatively poorer grade of faci... View full abstract»

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  • Applicability of Multipath Protection to Meteor Burst Communications

    Publication Year: 1959, Page(s):209 - 210
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (246 KB)

    This paper investigates past methods of improving the duty cycle of meteor scatter communications links in the presence of multipath distortion and suggests using a technique, for further improvement, which has proved useful at HF frequencies. It notes also, that use of this technique in conjunction with improved endof-message error detection techniques should yield an improved duty cycle for mete... View full abstract»

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  • A Formalized Procedure for the Prediction and Analysis of Multichannel Tropospheric Scatter Circuits

    Publication Year: 1959, Page(s):211 - 221
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (921 KB)

    In order to evaluate the potentialities of the scatter link and to minimize the financial risk involved in its implementation, examination of many combinations of path, sites, and system configurations is desirable. To assist this process, and to minimize the financial risks involved in uncertainties, a formal analytical procedure for the study of these circuits is desirable. The essential structu... View full abstract»

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  • Contributors and back cover

    Publication Year: 1959, 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