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IEEE Transactions on Communication Technology

Issue 4 • Date December 1964

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Displaying Results 1 - 25 of 29
  • [Front cover and table of contents]

    Publication Year: 1964, Page(s): 0
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    Freely Available from IEEE
  • Editorial [Fields of Interest of Committees and Fields of Communications Technical Committees]

    Publication Year: 1964, Page(s): 115
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    Freely Available from IEEE
  • Communication with Orthogonal Polyphase Signals over a Noisy Channel with Doppler Frequency Shift

    Publication Year: 1964, Page(s):116 - 118
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    A set of N orthogonal signals is constructed with a modulated carrier taking N possible phase values, and the whole class of such sets is described with a coding procedure that employs a permutation of N integers. These signals are used for communication purposes, and it is shown that the... View full abstract»

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  • A Geometrical Study of Transmitted Reference Communication Systems

    Publication Year: 1964, Page(s):118 - 123
    Cited by:  Papers (33)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (581 KB)

    Digital communication systems utilizing wide-band carriers require a coherent reference for optimal data processing. This reference may be either locally generated or transmitted simultaneously with the data. The latter system completely avoids the synchronization problem of locally generated reference systems but is degraded by the fact that two receivers are required, excess system dimension mus... View full abstract»

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  • Serial Synchronization of Pseudonoise Systems

    Publication Year: 1964, Page(s):123 - 127
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB)

    Radar, communications, and ranging systems can use pseudonoise modulated carriers. The extraction of information from the carrier requires the synchronization of a pseudonoise waveform at the receiver for correlation detection. For initial synchronization, the receiver must examine all possible time positions of the incoming pseudonoise waveform. In serial search the time difference between the ps... View full abstract»

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  • Correlative Digital Communication Techniques

    Publication Year: 1964, Page(s):128 - 135
    Cited by:  Papers (56)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (807 KB)

    A new method for the transmission of intelligence by means of a signal having certain correlation properties has been evolved. The theoretical and practical aspects of this concept are presented. An important advantage of these techniques is that for a fixed performance criteria, considerably higher speeds are possible compared to the presently known methods. In addition, the implementation is sim... View full abstract»

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  • An Analysis of Retransmission Systems

    Publication Year: 1964, Page(s):135 - 145
    Cited by:  Papers (67)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1042 KB)

    This paper presents an analysis of the throughput rate R and undetected block error rate ρ for each of three basic types of retransmission logics: 1) send and wait for confirmation, 2) send continuously repeating each individual unconfirmed message, and 3) send continuously repeating each unconfirmed message together with those which followed it. Formulas for R and ρ were obtained in ter... View full abstract»

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  • Comparisons of Error Control Techniques

    Publication Year: 1964, Page(s):146 - 154
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (734 KB)

    The performance capabilities of several retransmission systems are compared with each other and with conventional errorcorrecting codes in hypothetical channels exhibiting independent or dependent errors. These evaluations are based on the analysis in the companion paper which admits errors in the feedback channel and undetectable errors in either channel. The basic problem of deciding whether to ... View full abstract»

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  • The Use of Holbrook and Dixon Loading Factors in Setting Receiver Parameters for an FDM-FM Radio Telephone Communication System

    Publication Year: 1964, Page(s):155 - 161
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (899 KB)

    It is convenient to use a 0-dBm sinusoidal test tone to set the deviation of an FM radio transmitter. It is of interest to know the peak frequency deviation produced by the composite talker signal, relative to the deviation assigned to the 0-dBm test tone. This is necessary to design the equipment with the proper RF bandwidth. If the RF bandwidth is too small, the system will be overloaded and dis... View full abstract»

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  • Dither Signals and Their Effect on Quantization Noise

    Publication Year: 1964, Page(s):162 - 165
    Cited by:  Papers (129)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (354 KB)

    In this paper, the conditions a dither signal must meet so that the quantizer noise can be considered independent of the signal are derived for a quantizer having a finite number of levels. An infinite class of dither signals which satisfy these conditions is given. It is seen that the most useful member of this class is one whose probability density function is uniformly distributed over a quanti... View full abstract»

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  • New Loop-Around Systems

    Publication Year: 1964, Page(s):165 - 175
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1161 KB)

    The system described here provides centralized twoway transmission measurements on two-way dial trunks and on one-way incoming dial trunks from remote offices to a control office. View full abstract»

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  • Determination of Long-Term Beyond-The-Horizon Propagation Reliability with Diversity

    Publication Year: 1964, Page(s):175 - 178
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (386 KB)

    A method is presented for determining long-term reliability curves for received signal levels and combined signal levels due to diversity in a scatter communications link. The incoming signals are assumed to be faded and have a Rayleigh distribution. These reliability calculations may be made for any specific time interval or all hours. The method accounts for various orders of diversity, types of... View full abstract»

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  • A 4-Wire Solid-State Switching System: Numbering Plan and Signaling System

    Publication Year: 1964, Page(s):179 - 186
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1054 KB)

    Signaling is simplified by the adoption of a universal numbering plan. Addressing between centers and from subscriber keysets uses the same inband v-f combinations. Supervision on trunks is accomplished with single frequency tones. For subscribers on local metallic lines advantage is taken of the 4-wire phantom for dc loop supervision and battery feed to normal subscriber instruments. Protection a... View full abstract»

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  • A 4-Wire Solid-State Switching System: Common Control Equipment

    Publication Year: 1964, Page(s):186 - 197
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    The common control equipment of an electronic switching center is described with reference to a block diagram. The progress of a local call is traced. The additional routines required to handle trunk traffic priority calls and stored address operation is then explained. The implementation of some memory and logic functions is highlighted. View full abstract»

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  • A 4-Wire Solid-State Switching System: Time Division Switching Network

    Publication Year: 1964, Page(s):197 - 206
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    The transmission path of an electronic switching center utilizing time division multiplexing, its associated contact control circuits, and contact memory are discussed. Line, interhighway, signal injector and highway discharge switches are incorporated in this transmission network. The design of an accurate and flexible transmission measuring device was necessary so that some of the established tr... View full abstract»

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  • Simplified Relations for Bit and Character Error Probabilities for M-ary Transmission over Rayleigh Fading Channels

    Publication Year: 1964, Page(s):207 - 209
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    First Page of the Article
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  • The equivalence of two test statistics for an optimum differential phase-shift keying receiver

    Publication Year: 1964, Page(s):209 - 210
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (185 KB)

    Two recent papers [by J.J. Bussgang, and M. Leiter, "Error rate approximations for differential phase-shift keying," ibid., vol CS-12, Mar 1964, pp 18-27 and J.G. Proakis, P.R. Drouilhet, Jr., and R. Price, "Performance of coherent detection systems using decision-directed channel measurement," ibid., vol CS-12, Mar 1964, pp 54-63] presented test statistics for an optimum Differential Phase-Shift ... View full abstract»

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  • The signal-suppression threshold of a frequency doubler

    Publication Year: 1964, Page(s):210 - 211
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (225 KB)

    It is the purpose of this note to present a derivation of the signal-suppression threshold of a frequency doubler. The assumed input is a sinusoid in Gaussian noise. The results will not be substantially in error for narrow-band modulated signals. View full abstract»

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  • Band occupancy of digital FM signals

    Publication Year: 1964, Page(s):211 - 216
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1162 KB)

    The theory of the transmission of digital data by frequency-shift methods has recently aroused new interest as a result of the increased requirements for frequency band conservation in telemetering and pulse-code modulation (PCM) applications. Assuming random 8equences of binary FM signals in the form of two equally probable, alternative frequencies for "mark" and "space" with continuous phase tra... View full abstract»

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  • Comparison of square-law and majority-count diversity combiners

    Publication Year: 1964, Page(s): 217
    Cited by:  Papers (3)
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    The purpose of this correspondence is to point out that the performance of a square-law diversity combiner with M branches is the same as that of a majority-count combiner with the same branch SNR and with (2M-1) branches. View full abstract»

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  • Comments on "Bandwidth and spectra of phase-and-frequency-modulated waves"

    Publication Year: 1964, Page(s):217 - 218
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    The problem of the evaluation of RF spectra of waves frequency or phase modulated by random noise is of great importance in the design of trunk radio systems. The system designer is particularly interested in the tail region, from the point of view both of bandwidth requirements and of interference considerations. As a consequence, a considerable body of work has been published, and it is disheart... View full abstract»

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  • Reduction of Impulse Interference in Voice Channels

    Publication Year: 1964, Page(s):218 - 220
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  • A simplified physical model for amplitude distribution of impulsive noise

    Publication Year: 1964, Page(s):220 - 222
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    Analytic representations for the a,mplitude distribution of impulsive noise have generally been presented as numerical approximations to experimental data. While this provides a satisfactory solution to design problems, it is of some interest to consider a simplified physical model of the impulsive noise sources affecting narrow-band receivers, and to compare the results witht he empirical models.... View full abstract»

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  • High-Altitude X-Band Noise Measurements

    Publication Year: 1964, Page(s):222 - 227
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  • On Survivability of Communications Systems

    Publication Year: 1964, Page(s):227 - 228
    Cited by:  Papers (1)
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Aims & Scope

This Transactions ceased publication in 1971. The current retitled publication is  IEEE Transactions on Communications.

Full Aims & Scope