Scheduled System Maintenance
On Saturday, October 21, single article sales and account management will be unavailable until 6 PM ET.
Notice: There is currently an issue with the citation download feature. Learn more.

IEEE Transactions on Communications

Issue 5 • May 1991

Filter Results

Displaying Results 1 - 21 of 21
  • Differential detection in quadrature-quadrature phase shift keying (Q2PSK) systems

    Publication Year: 1991, Page(s):703 - 712
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (692 KB)

    A generalized quadrature-quadrature phase shift keying (Q2 PSK) signaling format is considered for differential encoding and differential detection. Performance in the presence of additive white Gaussian noise (AWGN) is analyzed. Symbol error rate is found to be approximately twice the symbol error rate in a quaternary DPSK system operating at the same Eb/N<... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A bandwidth allocation strategy for a FDM multichannel modem

    Publication Year: 1991, Page(s):644 - 646
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB)

    Implementing a frequency division multiplexing (FDM)-based modem for a multichannel application requires a bandwidth allocation strategy. That is, one must decide how to allocate total bandwidth to individual channels such that (a) the desired aggregate rate can be achieved and (b) the desired individual channel bit rates can be achieved. An optimal strategy for bandwidth allocation is proposed. T... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fade-durations derived from land-mobile-satellite measurements in Australia

    Publication Year: 1991, Page(s):664 - 668
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    Transmissions from the Japanese ETS-V geostationary satellite were measured at L-band (1.5 GHz) in a vehicle driving on roads of south-eastern Australia. The measurements were part of a program designed to characterize propagation effects due to roadside trees and terrain for mobile-satellite-service (MSS). It is shown that the cumulative distributions of fade and nonfade durations follow... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Incremental-redundancy transmission for meteor-burst communications

    Publication Year: 1991, Page(s):689 - 702
    Cited by:  Papers (23)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1208 KB)

    The performance of type-II hybrid automatic repeat request (ARQ) is compared to that of fixed-rate type-I hybrid ARQ for meteor-burst communications. Maximum throughput is obtained for meteor-burst communications by using a transmission scheme for which the information rate of the code, varies in response to the fluctuations in the power received from a meteor trail. For type-II hybrid ARQ, a vari... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Pruning the fast discrete cosine transform

    Publication Year: 1991, Page(s):640 - 643
    Cited by:  Papers (63)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    The matrix representation of the simple structured algorithm for the discrete cosine transform (DCT), which was first introduced by Y. Morikawa et al. (1985) based on the successive order reduction of the Tchebycheff polynomial, and retrieved by a simpler approach by Z. Wang (1988), is reviewed. A fast pruning algorithm for the DCT is then developed View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The bypass queue in fast packet switching

    Publication Year: 1991, Page(s):766 - 774
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (864 KB)

    The telecommunications networks of the future are likely to be packet switched networks consisting of wide bandwidth optical fiber transmission media, and large, highly parallel, self-routing switches. Recent considerations of switch architectures have focused on internally nonblocking networks with packet buffering at the switch outputs. These have optimal throughput and delay performance. The au... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An adaptive coding scheme for time-varying channels

    Publication Year: 1991, Page(s):653 - 663
    Cited by:  Papers (138)  |  Patents (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (884 KB)

    An adaptive coding scheme for digital communication over time-varying channels is presented. The scheme is based on a finite-state Markov channel model. Emphasis is on the adaptation of the error protection to the actual channel state. The throughput gains that are achieved by the adaptive scheme relative to the conventional nonadaptive coding methods are demonstrated by several examples. Of speci... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A space diversity channel model for multipath propagation measurements in New Zealand

    Publication Year: 1991, Page(s):683 - 688
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    A description is given of the results of a 140 Mb/s 64 QAM digital microwave radio field trial to characterize a space diversity channel model with maximum power combining. Measurements were taken on a 60.8-km overwater route. A Rummler model has been fitted to the spectral data collected from the field trial. It is shown that the model can also be fitted when the effects of maximize power combini... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • OFDM for data communication over mobile radio FM channels. I. Analysis and experimental results

    Publication Year: 1991, Page(s):783 - 793
    Cited by:  Papers (61)  |  Patents (72)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (964 KB)

    The performance of OFDM/FM modulation for digital communication over Rayleigh-fading mobile radio channels is described. The use of orthogonal frequency division multiplexing (OFDM) over mobile radio channels was proposed by Cimini (1985). OFDM transmits blocks of bits in parallel and reduces the bit error rate (BER) by averaging the effects of fading over the bits in the block. OFDM/FM is a modul... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Strange attractors in multipath propagation

    Publication Year: 1991, Page(s):629 - 631
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (200 KB)

    The estimation of the correlation dimension of multipath propagation signals in an indoor environment, indicates the presence of a strange attractor of dimension between four and five, suggesting deterministic chaos. The authors stress that although the profiles they examined show saturation in all three experimental configurations, indicating that they would be able to describe their data with a ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An enhancement to blind equalization algorithms

    Publication Year: 1991, Page(s):636 - 639
    Cited by:  Papers (14)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    Blind equalization performance can be improved by controlling the equalizer adaption step-size according to the region in which the received signal lies in the constellation plane. A simple technique based on this principle is proposed as a modification to blind equalization algorithms, and its effectiveness is demonstrated by simulation. As an example, the algorithm of Picchi and Prati (1987) is ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Performance of binary and quaternary direct-sequence spread-spectrum multiple-access systems with random signature sequences

    Publication Year: 1991, Page(s):713 - 724
    Cited by:  Papers (106)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (880 KB)

    The performance of synchronous and asynchronous, binary and quaternary (with and without offset) direct-sequence spread-spectrum multiple-access (DS/SSMA) communication systems using random signature sequences and arbitrary chip waveforms is investigated. The average probability of error at the output of the correlation receiver is evaluated using a characteristic-function approach for these syste... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Coding for meteor burst communications

    Publication Year: 1991, Page(s):647 - 652
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    The use of error correction coding for meteor burst communications is discussed. The cutoff rate is derived for a meteor burst channel model which assumes that the received signal amplitude decays exponentially. The message error rate of a coded system, obtained by means of computer simulation, is compared to that of an uncoded system. A tight upper bound on the performance of the coded system is ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Blind equalization using a tricepstrum-based algorithm

    Publication Year: 1991, Page(s):669 - 682
    Cited by:  Papers (152)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1000 KB)

    An adaptive blind equalization method is introduced for nonminimum phase communication channels. The method estimates the inverse channel impulse response, by using the complex cepstrum of the fourth-order cumulants (tricepstrum) of the synchronously sampled received signal. As such, the proposed adaptive method depends only on the statistics of the received sequence, and is capable of reconstruct... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fairness in network optimal flow control: optimality of product forms

    Publication Year: 1991, Page(s):775 - 782
    Cited by:  Papers (133)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (752 KB)

    Consideration is given to the problem of optimal flow control in a multiclass telecommunications environment where each user (or class) desires to optimize its performance while being fair to the other users (classes). The Nash (1950) arbitration scheme from game theory is shown to be a suitable candidate for a fair, optimal operation point in the sense that it satisfies certain axioms of fairness... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Statistical channel impulse response models for factory and open plan building radio communicate system design

    Publication Year: 1991, Page(s):794 - 807
    Cited by:  Papers (251)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1172 KB)

    Statistical radio channel impulse response models are presented for the analysis and design of wireless factory and open plan office communication systems. The models incorporate first- and second-order statistics to characterize the discrete impulse responses of indoor radio channels for both line-of-sight (LOS) and obstructed (OBS) topographies. The effects of large-scale transmitter-receiver se... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Joint maximum likelihood symbol and slot synchronization for optical OPPM channels

    Publication Year: 1991, Page(s):632 - 635
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    A jointly optimum slot and symbol clock recovery scheme for a direct-detection optical communication system with overlapping pulse position modulation (OPPM) is proposed. To arrive at the suggested optimum synchronizer, the maximum likelihood (ML) estimation technique is used when the observed process is a Poisson point process (i.e., shot noise limited receiver). Two suboptimal synchronizer model... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Near-optimum detection in synchronous code-division multiple-access systems

    Publication Year: 1991, Page(s):725 - 736
    Cited by:  Papers (328)  |  Patents (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1076 KB)

    Communication networks using code division multiple access (CDMA) include applications where several packets of information are transmitted synchronously and simultaneously over a common channel. Consideration is given to the problem of simultaneously demodulating every packet from such a transmission. A nonlinear detection scheme based on a linear complexity multistage multiple-access interferenc... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Moment analysis for traffic associated with Markovian queueing systems

    Publication Year: 1991, Page(s):737 - 746
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (692 KB)

    A study is made of various traffic processes associated with Markovian queuing systems, and the moments of the traffic processes are analyzed. The purpose of the study is to develop a means of computing the moments efficiently so as to extend the conventional method of representing the traffic processes to a larger class of queuing systems. As an outcome of the analysis, the recurrence formulae fo... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Satellite clusters: a performance study

    Publication Year: 1991, Page(s):747 - 757
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (736 KB)

    A performance study of two onboard stored, baseband switched, TDMA satellites interconnected through intersatellite links is presented. The uplinks are operated under the slotted ALOHA policy, while the downlinks and intersatellite links are operated using TDM policy. Each satellite has a finite buffer capacity for successful packets arriving, on the uplinks and on the intersatellite links. The au... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Decision-directed coherent delay-lock tracking loop for DS-spread-spectrum signals

    Publication Year: 1991, Page(s):758 - 765
    Cited by:  Papers (40)  |  Patents (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (508 KB)

    The authors present a nonconventional joint data demodulation-pseudo-noise (PN) code tracking scheme for direct sequence (DS) spread-spectrum (SS) signals which solves problems of component imbalance and sensitivity with hardware simplicity and no performance degradation. An integrate-and-dump Costas loop is used for carrier recovery and data demodulation of the SS signal. Both data and carrier ar... 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