IEEE Transactions on Communications

Issue 9 • September 1984

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Displaying Results 1 - 19 of 19
  • [Front cover and table of contents]

    Publication Year: 1984, Page(s): 0
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    Freely Available from IEEE
  • When less is more: where the Communications Society's publications are headed

    Publication Year: 1984, Page(s): 989
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    Freely Available from IEEE
  • On the Probability of Undetected Error for the Maximum Distance Separable Codes

    Publication Year: 1984, Page(s):998 - 1006
    Cited by:  Papers (53)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (574 KB)

    In this paper we investigate the performance of maximum-distance-separable codes with symbols fromGF(q)when they are used for pure error detection or for simultaneous error correction and detection over aq-input andq-output discret memoryless channel with symbol error probability ε. First we show that the probability of undetected error for an MDS code used fo... View full abstract»

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  • Point-To-Multipoint Communication Over Broadcast Links

    Publication Year: 1984, Page(s):1034 - 1044
    Cited by:  Papers (73)  |  Patents (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1024 KB)

    In this paper we study some link control protocols for use in point-to-multipoint communication over broadcast links. We concentrate on automatic repeat request protocols of the go-back-Ntype and define, analyze, and compare three such protocols. A major contribution of this paper is a relatively simple protocol which is easy to implement and performs very well under a wide range of con... View full abstract»

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  • An A, B-Polar Approach for Multimode Polarization Analysis in Satellite Communications

    Publication Year: 1984, Page(s):1045 - 1049
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (435 KB)

    This paper describes a convenient method of polarization analysis for a circular multimode aperture antenna by decomposing the field distribution into two components calledA,B-polar. The new idea in this technique is the separation of theA,B-polar for field expression into a rotationally symmetric magnitude function and an orientation function independent of the antenna off-a... View full abstract»

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  • Comment on "Optimal Design of PLL with Two Seperate Phase Detectors"

    Publication Year: 1984, Page(s):1056 - 1058
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (357 KB)

    This correspondence comments on a recent paper by Heiman and Bar-Ness. In the paper the authors propose a two-channel PLL and pursue an optimization analysis of the proposed configuration. They base the analysis on Viterbi's equivalent noise model. In our comment it is shown that their application of the model suffers from a fundamental flaw. Difficulties in the physical interpretation of the resu... View full abstract»

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  • Comment on the following two Correspondence Items

    Publication Year: 1984, Page(s): 1056
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    First Page of the Article
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  • Comments on "An Efficient SS/TDMA Time Slot Assignment Algorithm"

    Publication Year: 1984, Page(s):1061 - 1065
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    The time slot assignment algorithm presented in the above paper needs certain improvements for it to be an efficient one. In this correspondence, the necessary improvements are incorporated and an improved SS/TDMA time slot assignment algorithm is presented. The new algorithm is compared to the old one and the computer simulation exhibits a better performance of the present algorithm. View full abstract»

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  • [Back cover]

    Publication Year: 1984, Page(s): 0
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    Freely Available from IEEE
  • Note on a Class of Codes Introduced by Séguin, Allard, and Bhargava

    Publication Year: 1984, Page(s):1053 - 1056
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    In this correspondence, we apply a theorem in finite geometry to obtain an improvement of the codes recently introduced by Séguin, Allard, and Bhargava to provide error protection for data in the ASCII format. Our construction yields a fast decoding algorithm. View full abstract»

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  • Application of the CCIR Bit Error Ratio Recommendation to Real Digital Radio Paths

    Publication Year: 1984, Page(s):1060 - 1061
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    The CCIR (International Radio Consultative Committee) has published a recommendation on the "Allowable bit error ratios at the output of the hypothetical reference digital path for radio-relay systems for telephony" (Recommendation 594). It has been normal practice to augment such a recommendation on performance with a corresponding recommendation for so-called real digital paths, as discussed in ... View full abstract»

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  • The Weight Spectra of Some Short Low-Rate Convolutional Codes

    Publication Year: 1984, Page(s):1050 - 1053
    Cited by:  Papers (128)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    This paper reports the results of a computer analysis of the distance properties of some of the best known rate 1/2, 1/3, and 1/4 codes to constraint length 14. The data include the truncated weight distributions of the codewords belonging to the incorrect subset which specifies the performance of the Viterbi algorithm as well as the minimum asymptotic growth rate of the weights of unmerged codewo... View full abstract»

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  • A Fundamental Lower Bound on the Performance of Practical Joint Carrier and Bit Synchronizers

    Publication Year: 1984, Page(s):1007 - 1012
    Cited by:  Papers (31)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    In this paper we derive a fundamental lower bound on the linearized mean-square phase and time delay errors resulting from a practical synchronizer operating on a carrier-modulated PAM waveform which is corrupted by stationary Gaussian noise. Our bound applies to a large class of synchronizers and, unlike the linearized performance itself, it is easily evaluated from the modulation format, the bas... View full abstract»

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  • Vector Quantizer Design for Memoryless Gaussian, Gamma, and Laplacian Sources

    Publication Year: 1984, Page(s):1065 - 1069
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    Locally optimum vector quantizer (VQ) designs are presented for memoryless Gaussian, gamma, and Laplacian sources. For Gaussian sources, low (2-6) dimensional vector quantization provides relatively little improvement in mean-squared error (MSE) compared to the minimum mean-squared error (MMSE) scalar quantizer. For Laplacian or gamma sources, however, significant improvement in MSE is available w... View full abstract»

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  • Authors' Reply

    Publication Year: 1984, Page(s):1058 - 1060
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    In this correspondence we prove that the optimization process used in the paper leads to bounded optimal phase detectors. The bounds can be applied in normalizing the functions of these detectors, rendering Meidan's argument invalid. View full abstract»

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  • Optimum and Suboptimum Space-Diversity Detection of Weak Signals in Non-Gaussian Noise

    Publication Year: 1984, Page(s):990 - 997
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (712 KB)

    The structure of the locally optimum space-diversity detector for coherent detection of a bandpass signal subject to amplitude fluctuations in the presence of narrow-band non-Gaussian noise is derived and its large-sample performance is evaluated. For easy implementation a suboptimum structure is proposed. It consists of local detectors performing independent local decisions and of a central proce... View full abstract»

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  • An Analytic Model for Flow Control Schemes in Communication Network Nodes

    Publication Year: 1984, Page(s):1013 - 1019
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (808 KB)

    A Markov model is developed for a message processing node with batch arrivals and various flow control schemes. In particular, a credit allocation pacing control mechanism, previously modeled only by simulation, is represented analytically. The primary application is the network-independent flow control of messages between networks which may have quite different characteristics, via a gateway, but... View full abstract»

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  • Synchronizability of a General Class of PCM Formats, Including NRZ, Manchester, and Miller Coding

    Publication Year: 1984, Page(s):1020 - 1024
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    This paper deals with a general class of PCM formats, which includes the well-known NRZ, Manchester, and Miller coding. We show that the Cramér-Rao lower bound on the mean-square error, resulting from a synchronizer which estimates the delay of a noisy PCM waveform, is inversely proportional to a quantity which depends on the PCM format only. This quantity is termed the "synchronizability" of... View full abstract»

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  • Adaptive Multiplication-Free Transversal Equalizers with Application to Digital Radio Systems

    Publication Year: 1984, Page(s):1025 - 1033
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (856 KB)

    Recently, multiplication-free digital filters have been proposed for different applications to digital radio systems and signal processing. The absence of multiplication is obtained by constraining each coefficient to be sum of powers of two. In this way, multipliers are substituted by shift registers and, if appropriate, some adders. The optimal power-of-two coefficients must be computed through ... 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