IEEE Transactions on Communications

Issue 1 • January 1986

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Displaying Results 1 - 17 of 17
  • [Front cover and table of contents]

    Publication Year: 1986, Page(s): 0
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    Freely Available from IEEE
  • Unknown Bounds on Performance in Nakagami Channels

    Publication Year: 1986, Page(s):22 - 24
    Cited by:  Papers (92)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    Optimum performance of communication in Nakagami channels is reexamined. With novel functionals ofm/gamma-distribution, analyses of signal interference and of coherent binary detection are greatly simplified. The general error-rate formula holds for coherent and noncoherent detection of PSK or FSK signals. A lower bound on error rates is established for some diversity systems. View full abstract»

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  • Further Results on Adaptive Equalizer Improvements for 16 QAM and 64 QAM Digital Radio

    Publication Year: 1986, Page(s):59 - 66
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (737 KB)

    Channel distortions due to multipath fading are a principal source of outage for high-capacity digital radio. Time domain equalization is increasingly becoming an effective means to compensate for fading induced ISI. This paper compares the performance of transversal and decision feedback equalizers used for 16 QAM and 64 QAM digital radio systems. The effect of tap spacing is examined by comparin... View full abstract»

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  • [Back cover]

    Publication Year: 1986, Page(s): 0
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    Freely Available from IEEE
  • An SIMD Multiprocessor Ring Architecture for the LMS Adaptive Algorithm

    Publication Year: 1986, Page(s):89 - 92
    Cited by:  Papers (18)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    A new architecture for a single instruction stream, multiple data stream (SIMD) implementation of the LMS adaptive algorithm is investigated. This is denoted as a ring architecture, due to its physical configuration, and it effectively solves the latency problem often associated with prediction error feedback in adaptive filters. The multiprocessor ring efficiently updates the filter input vector ... View full abstract»

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  • Performance of DS Spread-Spectrum Receiver Employing Interference-Suppression Filters Under a Worst-Case Jamming Condition

    Publication Year: 1986, Page(s):13 - 21
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    In this paper, the worst-case power spectral density of a narrow-band Gaussian jammer operating in a direct sequence (DS) spread-spectrum system employing an interference-rejection filter is derived under a joint power and bandwidth constraint on the jammer. The effectiveness of the suppression filter under these conditions is examined and average probability of error results for the system's perf... View full abstract»

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  • Multiple-User Interference in FHMA-DPSK Spread-Spectrum Communications

    Publication Year: 1986, Page(s):1 - 12
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1040 KB)

    In this paper, we investigate the performance of a nearoptimum receiver in a frequency-hopped multiple-access (FHMA) differential phase-shift-keyed (DPSK) spread-spectrum communication system. We obtain upper bounds on the bit error rates (BER's) for the chipsynchronous system and the chip-asynchronous system in the presence of a single interfering signal which interferes in one time-chip. We also... View full abstract»

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  • Double Interpolation for Digital-to-Analog Conversion

    Publication Year: 1986, Page(s):77 - 81
    Cited by:  Papers (46)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    Interpolative digital-to-analog converters generate an output that has only a few analog levels. They provide fine resolution by oscillating rapidly between these levels in such a manner that the average output represents the value of the applied code. Here we describe an improved method of interpolating that results in reduced noise in the signal band. A theory of the interpolation, confirmed by ... View full abstract»

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  • Reliability Modeling and Analysis of Communication Networks with Dependent Failures

    Publication Year: 1986, Page(s):82 - 84
    Cited by:  Papers (36)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    This paper presents a new model to study the reliability of communication networks in which link failures are statistically dependent. The approach tries to identify and model explicitly the events that cause communication link failures. No conditional probabilities are needed, and so two major difficulties inherent to them, namely, an exponential number of conditional probabilities to deal with a... View full abstract»

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  • Transmission Range Control in Multihop Packet Radio Networks

    Publication Year: 1986, Page(s):38 - 44
    Cited by:  Papers (328)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (624 KB)

    This paper presents a model for analyzing the performance of transmission strategies in a multihop packet radio network where each station has adjustable transmission radius. A larger transmission radius will increase the probability of finding a receiver in the desired direction and contribute bigger progress if the transmission is successful, but it also has a higher probability of collision wit... View full abstract»

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  • Dynamic Address Assignment in Broadcast Networks

    Publication Year: 1986, Page(s):31 - 37
    Cited by:  Papers (1)  |  Patents (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (824 KB)

    In this paper we consider the problem of dynamically assigning addresses to stations attached to a broadcast network. We present a distributed protocol which guarantees that a new station will eventually be assigned an address if one is free, and furthermore, that no two stations on the network will have the same address. We show how the protocol can be simplified in certain specific environments. View full abstract»

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  • On the Stability of Announced Retransmission Random Access Systems

    Publication Year: 1986, Page(s):85 - 89
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    A finite user model for stability analysis of announced retransmission random access (ARRA) systems is presented. It is shown that as in other ALOHA-type random access protocols, bistable behavior and saturation can occur unless a suitably long retransmission delay is used. The higher expected delay associated with an unconditionally stable nonadaptive system can be avoided by adaptively varying r... View full abstract»

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  • Route Setup with Local Indentifiers

    Publication Year: 1986, Page(s):45 - 53
    Cited by:  Papers (11)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1056 KB)

    The paper introduces a reliable distributed procedure for establishing and cancelling routes in a circuit-switched data network that uses local path identifiers (LPID). The procedure ensures that the route is set up properly unless a failure is encountered, data messages are delivered to their destinations unless they encounter a cancellation process and the route is cancelled, and all LPID entrie... View full abstract»

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  • Decimation for Sigma Delta Modulation

    Publication Year: 1986, Page(s):72 - 76
    Cited by:  Papers (198)  |  Patents (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    Decimation is an important component of oversampled analog-to-digital conversion. It transforms the digitally modulated signal from short words occurring at high sampling rate to longer words at the Nyquist rate. Here we are concerned with the initial stage of decimation, where the word rate decreases to about four times the Nyquist rate. We show that digital filters comprising cascades of integra... View full abstract»

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  • A New Method for Computing the Properties of the Output Signal of Nonlinear Amplifiers

    Publication Year: 1986, Page(s):67 - 71
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    A method for the numerical representation of the nonlinear properties of amplifiers is developed. It is designed for use in computer models, and results in efficient and accurate computation of important properties of the output signal for a wide range of input signals. The single-carrier nonlinear transfer characteristic is split into two parts, one of which is chosen for analytical convenience a... View full abstract»

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  • Real-Time HF Channel Parameter Estimation

    Publication Year: 1986, Page(s):54 - 58
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    An efficient real-time realization for the estimation of the HF channel parameters is presented and the estimation errors are evaluated. The parameters that were chosen are the Doppler spread, multipath spread, Doppler shift and signal-to-noise ratio, which are the dominant ionospheric propagation parameters. The estimation procedures were real-time implemented on a digital signal processor and te... View full abstract»

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  • A Queueing Network Model of a Circuit Switching Access Scheme in an Integrated Services Environment

    Publication Year: 1986, Page(s):25 - 30
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    A closed cyclic queueing system with multiple classes is analyzed numerically. The queueing system was originally motivated by a need to model circuit switching traffic in a data multiplexing scheme which provides both circuit and switching capabilities. The queueing system consists of two nodes, a primary and a secondary node. Customers in the primary node may require a random number of servers s... 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