By Topic

IEEE Transactions on Communications

Issue 7 • July 1987

Filter Results

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

    Publication Year: 1987, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (197 KB)
    Freely Available from IEEE
  • Reliability and throughput analysis of a concatenated coding scheme

    Publication Year: 1987, Page(s):698 - 705
    Cited by:  Papers (9)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (734 KB)

    The performance of a concatenated coding scheme for error control in ARQ systems is analyzed for both randomerror and burst-error channels. In particular, the probability of undetected error and the system throughput are calculated. In this scheme, the inner code is used for both error correction and error detection, and the outer code is used for error detection only. Interleaving/deinterleaving ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Diversity Cutoff Rate Evaluation of the Rayleigh and Rician Fading Channels

    Publication Year: 1987, Page(s):762 - 764
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (254 KB)

    This paper presents expressions for the cutoff rate R0diversity transmission over the Rayleigh and Rician fading channels withM-ary orthogonal signaling. These expressions include the unquantized R0forD-fold diversity, which upper bounds the channel performance, and hard decision and four- and eight-level soft decision quantized R0expressions.... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Comments on "A Two-Stage Rearrangeable Broadcast Switching Network"

    Publication Year: 1987, Page(s):772 - 773
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    It is shown that a result achieved in the above paper is not applicable without constraints. The statement thatn_{2} = 13in the case ofM = 3ifsqrt{N_{1}}is, at least, 6 is not always correct. Ifsqrt{N_{1}}is a multiple of 5,n_{2}= 12, and ifsqrt{N_{1}}is a multiple of 4,n_{2} = 11. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Author's reply

    Publication Year: 1987, Page(s): 773
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (105 KB)

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • [Back cover]

    Publication Year: 1987, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (273 KB)
    Freely Available from IEEE
  • Fundamental Conditions Governing TDM Switching Assignments in Terrestrial and Satellite Networks

    Publication Year: 1987, Page(s):755 - 761
    Cited by:  Papers (39)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (888 KB)

    We consider the traffic handling capability of a new switching architecture which generalizes upon the structure of a traditional time multiplex switching system. For the traditional approach, lowbandwidth end users are formed into groups, each of which shares a single high bandwidth time-division multiplexed (TDM) line into the central time multiplex switch. Each user synchronously generates pack... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Performance of Reduced-Bandwidth 16 QAM with Decision-Feedback Equalization

    Publication Year: 1987, Page(s):715 - 723
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (912 KB)

    This paper presents and investigates the performance of a reduced-bandwidth 16 QAM (RB-16 QAM) signaling technique which employs severe narrow-band filtering and decision-feedback equalization in the receiver to compensate for the resulting intersymbol interference. The overall filtering is designed so as to provide the spectral efficiency of 64 QAM. RB-16 QAM is compared to 64 QAM in terms of its... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analysis of the Fixed-Assigned TDMA Technique with Finite Buffer Capacity

    Publication Year: 1987, Page(s):724 - 729
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    This paper focuses on the performance of the time-division multiple-access technique with fixed allocation scheme when the memory buffer size at each ground station is finite. Specifically, a queueing model is formulated in order to derive the expected waiting time of the messages in the buffer and the probability of message blocking. Two cases are discussed. single-packet messages and multipacket... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Developments in the Theory and Application of Importance Sampling

    Publication Year: 1987, Page(s):706 - 714
    Cited by:  Papers (64)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (936 KB)

    The assessment of bit error rate (BER) performance of a digital communication system via computer simulation has traditionally been done using the Monte Carlo method. For very low BER, this method requires excessive computer time. This time can be substantially reduced by using extrapolation based on importance sampling (IS). In applying IS to a complex system, many considerations must be addresse... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An Adaptive Algorithm for Motion Compensated Color Image Coding

    Publication Year: 1987, Page(s):747 - 754
    Cited by:  Papers (26)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1208 KB)

    This paper presents an adaptive algorithm for motion compensated color image coding. The algorithm can be used for video teleconferencing or broadcast signals. Activity segmentation is used to reduce the bit rate and a variable stage search is conducted to save computations. The adaptive algorithm is compared with the nonadaptive algorithm and it is shown that with approximately 60 percent savings... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Interconnection of CSMA Local Area Networks: The Frequency Division Approach

    Publication Year: 1987, Page(s):730 - 738
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (984 KB)

    This paper considers the interconnection of two local area networks, each of which connects a large population of users via a carrier-sense multiple-access (CSMA) channel. In each network a bridge node receives internetwork packets from the local users and forwards them to the bridge node of the other network via a point-to-point link; the bridge node of the destination network queues these intern... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An ARQ Scheme with Memory and Integrated Modulation

    Publication Year: 1987, Page(s):689 - 697
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (808 KB)

    In this paper, the integration of the modulation operation in an automatic-repeat-request scheme, using error-detecting codes, is analyzed. A new protocol is described, in which the modulation operation facilitates the recovery of the transmitted code word. The results show a net improvement in the throughput of the automatic-repeat-request scheme, particularly for mean and high error-rate conditi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Maximum-Likelihood Digital Data Sequence Estimation Over the Gaussian Channel with Unknown Carrier Phase

    Publication Year: 1987, Page(s):764 - 767
    Cited by:  Papers (29)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    We consider the problem of simultaneous ML estimation of data and carrier phase from a linear suppressed-carrier modulated signal received in the presence of additive white Gaussian noise. The ML detector of the data sequence is derived, and its error probability performance is analyzed. The result shows that the performance loss due to the unknown carrier phase can be reduced by increasing the se... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fair Algorithms for Maximal Link Activation in Multihop Radio Networks

    Publication Year: 1987, Page(s):739 - 746
    Cited by:  Papers (49)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (840 KB)

    We present a distributed algorithm for obtaining a fair time slot allocation for link activation in a multihop radio network. We introduce the concept of maximal fairness in which the termination of a fair allocation algorithm is related to maximal reuse of the channel under a given fairness metric. The fairness metric can be freely interpreted as the expected link traffic load demands, link prior... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Stability, Throughput, and Delay of Asynchronous Selective Reject ALOHA

    Publication Year: 1987, Page(s):767 - 772
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    An analytical performance evaluation model is presented for selective reject (SREJ) ALOHA, a recently proposed high-capacity protocol for unslotted channels with high propagation delay. SREJALOHA approaches the theoretical asynchronous multiaccess throughput limit of 0.368 for fixed or variable length message traffic, using subpacketization of messages in conjunction with a selective reject retran... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An Analytical Solution of the Fokker-Planck Equation in the Phase-Locked Loop Transient Analysis

    Publication Year: 1987, Page(s):773 - 775
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (224 KB)

    The transient behavior analysis of the phase-locked loop phase error process has resulted in a Fokker-Planck equation for which various numerical techniques have been proposed by many authors. In this paper, an analytical solution of the Fokker-Planck equation is obtained based upon the Girsanov transformation. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

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