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IEEE Transactions on Communications

Issue 2 • February 1973

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Displaying Results 1 - 13 of 13
  • [Front cover and table of contents]

    Publication Year: 1973, Page(s): 0
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    Freely Available from IEEE
  • Error Probability Performance of M-ary CPSK Systems With Intersymbol Interference

    Publication Year: 1973, Page(s):97 - 109
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (983 KB)

    We derive upper and lower bounds on the probability of error ofM-ary CPSK systems subject to intersymbol interference and additive Gaussian noise. The bounds are expressed in terms of the error probability obtained with a finite pulse train and some parameters associated with the residual pulse train. Methods are given to compute the probability of error with a finite number of interfer... View full abstract»

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  • Selective Diversity for Rayleigh Fading Channels With a Feedback Link

    Publication Year: 1973, Page(s):117 - 126
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (886 KB)

    A feedback scheme for regulating error probability on slowly fading communication channels is described and analyzed. In this selective diversity system, only the bestRofLavailable diversity subchannels are used, the selection being revised from moment to moment. Comparison with conventional diversity transmission on an 8-channel system shows a performance improvement ranging... View full abstract»

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  • Correction to "Bounds on Error-Pattern Probabilities for Digital Communications Systems"

    Publication Year: 1973, Page(s): 154
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    First Page of the Article
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  • [Back cover]

    Publication Year: 1973, Page(s): 0
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    Freely Available from IEEE
  • Advances in Digital Radio Systems

    Publication Year: 1973, Page(s):147 - 151
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    This paper examines the analog methods presently used in carrying digital signal via the terrestrial microwave radio relay systems. It then summarized the state of the art of two proposed digital radio systems, operating above and below 10 GHz. It also highlights some of the problem areas yet to be solved, with particular emphasis on these design problems associated with the high-capacity system. ... View full abstract»

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  • The Performance of Coded Diversity Systems on a Slowly Fading Rayleigh Channel

    Publication Year: 1973, Page(s):109 - 116
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (896 KB)

    A new diversity technique has been developed that uses message waveforms consisting of a sequence of RF bursts at a number of different frequencies. Furthermore, the ensemble of message sequences is a code with large minimum Hamming distance. Hence, reliable communications are possible in spite of channel fading and additive noise. The new diversity technique has been integrated into a troposcatte... View full abstract»

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  • The Effect of a Nonlinearity upon Signals in the Presence of Noise

    Publication Year: 1973, Page(s):152 - 154
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    A general method is presented for determining not merely the output spectrum resulting from a nonlinear transformation of signals and noise but also the signal × signal distortion and intermodulation components, including their phases and their precise forms as functions of time. Recent work by Jain is thereby illuminated and generalized. View full abstract»

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  • Highly Efficient Voice Modulation For Low C/N0Communications Channels with Hard Limiting Repeaters

    Publication Year: 1973, Page(s):127 - 135
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (936 KB)

    A highly efficient subcarrier modulation technique, suppressed clock pulse duration modulation (SCPDM) has been developed that outperforms narrow-band frequency modulation in very noisy channels. Developed primarily for hard limiting satellite repeaters, the technique utilizes a phase-shift key (PSK) carrier and phase-lock demodulators. The SCPDM technique is shown to be extremely useful and cost ... View full abstract»

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  • Legal Aspects of Selected Issues in Telecommunications

    Publication Year: 1973, Page(s): 155
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (112 KB)

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  • Simulation of Sequential Decoding with Phase-Locked Demodulation

    Publication Year: 1973, Page(s):89 - 97
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (872 KB)

    Convolutional encoding with biphase modulation is an attractive combination of modulation/coding for the Gaussian channel, but a means of tracking carrier phase must be provided. The performance of combined sequential decoding and suppressed carrier (Costas loop) tracking in the receiver is difficult to analyze but can be obtained by computer simulations. Results of such simulations are presented ... View full abstract»

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  • Multifilter Phase-Lock Loop Nonlinear Analysis and Design Criterion

    Publication Year: 1973, Page(s):135 - 142
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    In this paper a nonlinear analysis of a multifilter phase-lock loop (MPLL) by using the method of "harmonic balance" is presented. The particular MPLL considered has a low-pass filter and a bandpass filter in parallel. An analytic expression for the relationship between the input signal phase deviation and the phase error is determined for sinusoidal FM in the absence of noise. The expression is u... View full abstract»

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  • Simultaneous Two-Way Data Transmission Over a Two-Wire Circuit

    Publication Year: 1973, Page(s):143 - 147
    Cited by:  Papers (21)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (864 KB)

    Simultaneous two-way (full-duplex) data transmission in the same bandwidth normally requires separate channels, and in the telephone network is realized by using a four-wire circuit. This paper reports on investigations directed toward full-duplex operation on a two-wire circuit using a hybrid coupler and a passband automatic transversal filter at each end of the circuit to separate the two signal... View full abstract»

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Aims & Scope

IEEE Transactions on Communications focuses on all telecommunications including telephone, telegraphy, facsimile, and point-to-point television by electromagnetic propagation.

 

 

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Naofal Al-Dhahir
University of Texas at Dallas