IEEE Transactions on Communications

Issue 12 • December 1984

Filter Results

Displaying Results 1 - 23 of 23
  • [Front cover and table of contents]

    Publication Year: 1984, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (209 KB)
    Freely Available from IEEE
  • A New Editor for the the Transactions

    Publication Year: 1984, Page(s): 1233
    Cited by:  Papers (1)
    Request permission for commercial reuse | PDF file iconPDF (129 KB)
    Freely Available from IEEE
  • Probability of Error Analyses of a BFSK Frequency-Hopping System with Diversity Under Partial-Band Jamming Interference - Part II: Performance of Square-Law Nonlinear Combining Soft Decision Receivers

    Publication Year: 1984, Page(s):1243 - 1250
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (661 KB)

    In this paper, error probability analyses are performed for a binary frequency-shift-keying (BFSK) system employingLhop/bit frequency-hopping (FH) spread-spectrum waveforms transmitted over a partial-band Gaussian noise jamming channel. The performance results for two types of square-law nonlinear combining soft decision receivers under worst-case partial-band jamming are presented. The... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Genralized Serial Search Code Acquisition: The Equivalent Circular State Diagram Approach

    Publication Year: 1984, Page(s):1260 - 1268
    Cited by:  Papers (49)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (780 KB)

    A simple circular state-diagram method has been recently proposed [1], [2] for the modeling, analysis, and optimization of straight serial search code acquisition in spread-spectrum systems. Herein, the approach is generalized to arbitrary serial strategies, such as theZ-search expanding window search, etc., and arbitrary a priori probability distributions for the code phase uncertainty... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On Adaptive Tree Polling Algorithms

    Publication Year: 1984, Page(s):1294 - 1298
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    This paper proposes three different algorithms for polling a finite set of users to determine the binary state of each user. The states are assumed to be described by i.i.d. Bernoulli random variables with parameterp. The algorithms differ in the responses offered by the users to queries and how the responses from several users are combined by the channel to produce a composite feedback... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Rate 3/4 Convolutional Coding of 16-PSK: Code Design and Performance Study

    Publication Year: 1984, Page(s):1308 - 1315
    Cited by:  Papers (37)  |  Patents (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (770 KB)

    Convolutional coding coupled with 16-PSK modulation is investigated for bandwidth efficient transmission. Rate 3/4, small memory codes are found which are optimized in the free-distance sense on the Gaussian channel. These codes provide up to 4.8 dB of coding gain with 32 states over uncoded 8-PSK, a scheme having the same spectral efficiency as the codes described. The performance is compared wit... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Composite NTSC Color Video Bandwidth Compressor

    Publication Year: 1984, Page(s):1331 - 1335
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (849 KB)

    Predictors operating on video signals sampled at six times the color subcarrier(6f_{c})have been investigated and compared with predictors operating at three times the color subcarrier(3f_{c}). When the best6f_{c}predictor is used with an adaptive delta modulator (ADM) step size generator, the resulting pictures are similar in quality to3f_{c}predictors ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Series Representations for Rice's Ie Function

    Publication Year: 1984, Page(s):1342 - 1344
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (329 KB)

    Two new series representations for the Rice functionIe (k, x)are presented. One of the series involves the modified Struve functions and the other involves the modified Bessel functions. These two series complement each other in their convergence speeds as functions of the values ofkandx. The truncation error bounds are derived for both series. Therefore, they can ... View full abstract»

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

    Publication Year: 1984, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (2526 KB)
    Freely Available from IEEE
  • Hybrid Adaptive Quantization for Speech Coding

    Publication Year: 1984, Page(s):1358 - 1361
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    This correspondence describes a new quantization technique called hybrid adaptive quantization (HAQ) that uses instantaneous [1], [2] as well as syllabic [3] adaptation of the step size. Two types of instantaneous adaptive algorithms have been used-Jayant's adaptive quantizer (JAQ) and the incremental adaptive quantizer (IAQ). Computer simulations have been performed for a sine-wave, correlated Ga... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Adaptive Load Balancing for Parallel Queues with Traffic Constraints

    Publication Year: 1984, Page(s):1339 - 1342
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    A new adaptive rule for balancing the load on many parallel queues is designed. The queueing system can accommodate different types of customers where each type is persistent in joining a particular set of queues. The rule makes use of a set of bias levels to compare the queue lengths and makes use of the majority-vote rule for propagating the routing decisions to the different types of customers.... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A New Architecture for Adaptive Intrafield Transform Compression of NTSC Composite Video Signal

    Publication Year: 1984, Page(s):1349 - 1351
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    In orthogonal transform coding of NTSC video signal, the data are processed in blocks. Processing a block of data that is maximally correlated leads to larger compression. This correspondence describes a new architecture for arranging the pixels in a block that yields higher correlation than the adjacent pixel blocks. The data are processed using adaptive, intrafield, discrete cosine transform, va... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Subjectively Adapted Image Communication System

    Publication Year: 1984, Page(s):1316 - 1322
    Cited by:  Papers (38)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1648 KB)

    An interactive image communication system is described transmitting image information stored in a central database over low-bitrate channels. To shorten the transmission time, a data compression technique is applied in combination with a progressive image transmission procedure. Furthermore, human interaction is implemented in order to select specific areas for picture buildup or to reject additio... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Theoretical Comparison Between DPCM and Transform Coding Regarding the Robustness of Coding Performance for Variation of Picture Statistics

    Publication Year: 1984, Page(s):1351 - 1358
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (800 KB)

    Since DPCM and transform coding are two fundamental approaches to high-efficiency (bit reduction) coding, it is important to clarify the basic coding characteristics of these approaches and the differences between them in order to utilize the high-efficiency coding method effectively. It is important to compare them not only from the standpoint of coding performance as optimized coding schemes bas... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Coding of Broadcast TV Signals for Transmission Over Satellite Channels

    Publication Year: 1984, Page(s):1323 - 1330
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (760 KB)

    This paper presents the coding algorithms and simulation results of multimode movement-compensated interframe video coders operating at 15 and 20 mbits/s for broadcast applications. The coding algorithms are based on a motion-compensated predictive coding approach. Simulation results using samples of broadcast video sequence indicate that excellent picture quality is obtained at the 20 Mbit/s tran... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Performance Improvement of a Binary Quantized All-Digital Phased-Locked Loop with a New Aided-Acquisition Technique

    Publication Year: 1984, Page(s):1269 - 1276
    Cited by:  Papers (8)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (712 KB)

    A nonuniform sampling digital phase-locked loop (DPLL) is proposed with a sequential loop filter, in which two additional phase comparators are added conjointly with an estimation-decision circuit controlling the two distinct modes, acquisition and tracking, in which the loop is to work. These additions provide more freedom to deal with the conflicting requirements of minimum acquisition time and ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Unified Analysis of Local Flow Control Mechanisms in Message-Switched Networks

    Publication Year: 1984, Page(s):1286 - 1293
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (696 KB)

    This paper introduces a unified queueing model of store-and-forward computer communication networks with random routing and a finite number of buffers at each node. This model has been based on a two-level classification of messages passing through the network. Using it we can analyze a wide class of local flow control mechanisms which have been proposed or used in practice. Some examples illustra... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • EMP Effects on the Performance of a Direct Sequence Spread-Spectrum Communication System

    Publication Year: 1984, Page(s):1251 - 1259
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (752 KB)

    This paper presents an analysis of the performance of a direct sequence spread-spectrum communication (processor) system operating in a nuclear EMP environment. EMP-induced interference (conducted EMP) at the receiver is modeled by a damped sinusoid and the analysis of the system uses a frequency domain approach instead of the conventional time domain approach. However, the interference suppressio... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Three-Node Packet Radio Network

    Publication Year: 1984, Page(s):1336 - 1339
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    A two-hop packet radio network consisting of three nodes is considered. The three nodes have infinite buffers and share a common radio channel for transmitting their packets. Two of the nodes forward their packets to a third node that acts as a source of data as well as a relay that forwards all the packets entering the network to a main station. We assume that two of the nodes are granted full ri... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On the Design of FIR Filters with Powers-of-Two Coefficients

    Publication Year: 1984, Page(s):1299 - 1307
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (728 KB)

    FIR filters with powers-of-two coefficients are attractive for cost-effective implementations. The performance of one such structure, the difference routing digital filter [8], is discussed. Using an SNR criterion, an optimal algorithm to select the value of the filter coefficients is presented. Results indicate that a 2-3 dB improvement in the SNR can be obtained with this new approach. In additi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Behavior of a Finite Queue with Batch Poisson Inputs Resulting from Message Packetization and a Synchronous Server

    Publication Year: 1984, Page(s):1277 - 1285
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    This paper studies the behavior of a packet switch which provides finite waiting space and receives packetized messages. The arrivals of the messages constitute a Poisson process. Each message consists of a random number of packets. The number of packets contained in a message is assumed to be an integer-valued random variable which may follow any arbitrary probability distribution. All packets re... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Sequencial Routing Optimization for Circuit Switched Networks

    Publication Year: 1984, Page(s):1234 - 1242
    Cited by:  Papers (4)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1056 KB)

    Nonhierarchical alternate routing is the simplest extension to the hierarchical routing currently used in telephone networks. In order to evaluate the merits of such a technique, it is necessary to be able to optimize some performance measure over the routing variables. In a first step, a short discussion is presented of the evaluation algorithms used for computing the end-to-end blocking probabil... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Two-Dimensional FIR ADM Digital Filters

    Publication Year: 1984, Page(s):1344 - 1348
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (784 KB)

    In this paper the realization and performance of a twodimensional finite impulse response (FIR) digital filter using adaptive delta modulation (ADM) have been studied. The analytical results have been verified by computer simulation. Also, it has been shown that onedimensional DM is adequate in the realization of a two-dimensional FIR ADM digital filter. Since the ADM digital filter requires no mu... 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