IEEE Transactions on Communications

Issue 8 • Aug 1992

Filter Results

Displaying Results 1 - 16 of 16
  • Performance analysis of nonblocking packet switch with input and output buffers

    Publication Year: 1992, Page(s):1294 - 1297
    Cited by:  Papers (15)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (272 KB)

    The performance of nonblocking packet switches such as the knockout switch and Batcher banyan switch for high-speed communication networks can be improved as the switching capacity L per output increases; the switching capacity per output refers to the maximum number of packets transferred to an output during a slot. The N×N switch with L=N was sh... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Neural net-based continuous phase modulation receivers

    Publication Year: 1992, Page(s):1396 - 1408
    Cited by:  Papers (16)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1000 KB)

    The authors propose feedforward neural networks (NNs) as receivers for partial-response continuous-phase-modulation (CPM) systems. Their approach is to replace the entire receiver structure, excluding timing recovery, with a neural net unit whose inputs are time samples of the incoming baseband signals, and whose outputs are the decoded symbols. Simulation results for coherent and incoherent NN-ba... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Evaluation and improvement of fault coverage of conformance testing by UIO sequences

    Publication Year: 1992, Page(s):1288 - 1293
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (468 KB)

    The fault coverage of testing protocols using unique input/output (UIO) sequences is analyzed. UIO sequences can be efficiently employed in checking the conformance specifications of protocols by using transition testing. The test sequence is found using the rural Chinese postman tour algorithm. A comprehensive fault model is developed, and analytical expressions are given for the fault coverage. ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Modulo sigma-delta modulation

    Publication Year: 1992, Page(s):1388 - 1395
    Cited by:  Papers (7)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (624 KB)

    A modulo sigma-delta modulator is introduced, and the behavior of the quantization error is derived. The system consists of a modulo limiter followed by a sigma-delta modulator. The limiter confines the input to the no-overload region of the sigma-delta modulator, and the modulo arithmetic performed by the limiter is amenable to recently developed techniques for the exact analysis of quantizer err... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Protocol conformance testing using multiple UIO sequences

    Publication Year: 1992, Page(s):1282 - 1287
    Cited by:  Papers (61)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (460 KB)

    Automatic generation of conformance test sequences for communication protocols by means of unique input/output (UIO) sequences is addressed. It is shown that if multiple minimum-length UIO sequences are computed for each state of the finite-state-machine (FSM) specification, then the length of the resulting test sequence is significantly reduced without an appreciable increase in the time needed t... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Mean internodal distance in regular and random multihop networks

    Publication Year: 1992, Page(s):1310 - 1318
    Cited by:  Papers (42)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (696 KB)

    The minimum necessary aggregate link capacity in a telecommunication network is directly proportional to the mean distance between nodes. The mean internodal distance is therefore an important network characteristic. It is shown that most network topologies, including those constructed at random, display mean internodal distances comparable to those of many carefully designed networks. Thus, caref... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analysis of avalanche diode receivers by saddlepoint integration

    Publication Year: 1992, Page(s):1327 - 1338
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (840 KB)

    The error probability in a binary fiber-optical communication system whose receiver utilizes an avalanche-diode detector is calculated by applying the method of numerical saddlepoint integration to Laplace inversion integrals for the probabilities of errors of the first and second kinds. It is shown how to choose the contours of integration for efficient numerical quadrature. The effects of shot n... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • New properties of sigma-delta modulators with DC inputs

    Publication Year: 1992, Page(s):1375 - 1387
    Cited by:  Papers (33)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (996 KB)

    New properties of single- and double-loop sigma-delta modulators with constant inputs are derived by exploiting the inherent structure os the output sequences or codewords that the modulators are capable of producing. Upper bounds are derived on the number of N-bit codewords for the single- and double-loop modulators. Analytical lower bounds on the mean squared error (MSE) obtainable by a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Convergence of synchronous and asynchronous greedy algorithms in a multiclass telecommunications environment

    Publication Year: 1992, Page(s):1277 - 1281
    Cited by:  Papers (40)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (356 KB)

    The Nash equilibrium point for optimum flow control in a noncooperative multiclass environment is studied. Convergence properties of synchronous and asynchronous greedy algorithms are investigated in the case where several users compete for the resources of a single queue using power as their performance criterion. A proof of the convergence of a synchronous greedy algorithm for the n use... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Blocking probabilities in multitraffic loss systems: insensitivity, asymptotic behavior, and approximations

    Publication Year: 1992, Page(s):1355 - 1366
    Cited by:  Papers (45)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (888 KB)

    It is known that, under any sharing policy, the state describing the number of calls established for each class of traffic in steady state has a product-form distribution when the connection time distribution has a rational Laplace transform. The product-form property further holds for arbitrary holding time distribution under coordinate convex sharing policies. For the complete sharing policy cas... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Near-optimum control of multiple-access collision channels

    Publication Year: 1992, Page(s):1298 - 1309
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (920 KB)

    A method based on recursive computation of the expected number of attempts and successes during the collision resolution phase of an access control algorithm is introduced for the design of near-optimum control strategies for multiple access collision channels with ternary and binary feedback. With this approach it is possible to circumvent the extremely difficult and still unsolved problem of fin... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Low mean internodal distance network topologies and simulated annealing

    Publication Year: 1992, Page(s):1319 - 1326
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (684 KB)

    Networks have been found through simulated annealing with mean internodal distances lower than any previously reported for a given number of nodes N with a maximum of p outgoing links per node. These networks form the closest known approximations to Moore networks. However, the improvements in mean internodal distance obtained are relatively small (a few percent) and this improve... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Asymptotic distortion spectrum of clipped, DC-biased, Gaussian noise [optical communication]

    Publication Year: 1992, Page(s):1339 - 1344
    Cited by:  Papers (65)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (352 KB)

    Consider a zero-mean, stationary Gaussian process g(t ), to which a large positive constant A has been added. Define a distortion process hA(t) as equal to g(t)+A when the latter is negative and equal to zero otherwise. The author calculates the power spectrum of the process hA(t) asympt... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Efficient algorithms for SS/TDMA scheduling

    Publication Year: 1992, Page(s):1367 - 1374
    Cited by:  Papers (22)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (652 KB)

    Efficient scheduling algorithms for the slot assignment problem in a satellite-switched time-division multiple-access (SS/TDMA) system are presented. This problem is translated into a modified open-shop scheduling problem, allowing the use of known optimal algorithms. Their complexity is expressed as a function of the following parameters: the number of nonzero entries in the demand matrix, the nu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Trellis coded vector quantization

    Publication Year: 1992, Page(s):1273 - 1276
    Cited by:  Papers (45)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (380 KB)

    A vector generalization of trellis coded quantization (TCQ), called trellis coded vector quantization (TCVQ), and experimental results showing its performance for an i.i.d. Gaussian source are presented. For a given rate, TCVQ yields a lower distortion that TCQ at the cost of an increase in implementation complexity. In addition, TCVQ allows fractional rates, which TCQ does not View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Queueing analysis of a class of star-interconnected networks under Markov modulated output process modeling

    Publication Year: 1992, Page(s):1345 - 1354
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (748 KB)

    A Markov modulated process is developed for the exact characterization of the output process of a class of random access networks (C-RANs) and the mean packet delay induced by the central node of a star interconnecting scheme is calculated. The latter is obtained through an approximate analysis of an appropriate queueing system under Markov modulated arrivals. It is shown that the ALOHA n... 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