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MILCOM 1985 - IEEE Military Communications Conference

20-23 Oct. 1985

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  • [Cover]

    Publication Year: 1985, Page(s): C1
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  • 1985 IEEE Military Communications Conference

    Publication Year: 1985, Page(s): i
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  • Copyright page

    Publication Year: 1985, Page(s): ii
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  • General Chairman's welcome

    Publication Year: 1985, Page(s): iii
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  • Technical Program Chairman's Message

    Publication Year: 1985, Page(s): iv
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  • MILCOM '85 Executive Committee

    Publication Year: 1985, Page(s): v
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  • Patron Sponsors

    Publication Year: 1985, Page(s): v
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  • MILCOM '85 Unclassified Sessions - IEEE/AFCEA Sponsored

    Publication Year: 1985, Page(s): vi
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  • MILCOM '85 Classified Sessions - DOD Sponsored

    Publication Year: 1985, Page(s): vii
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  • Author index

    Publication Year: 1985, Page(s):viii - ix
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  • [Sessions - Table of Contents]

    Publication Year: 1985, Page(s):x - xvi
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  • [Breaker pages]

    Publication Year: 1985, Page(s): 1
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  • A Comparison of Diversity Combining Techniques for Frequency-Hop Communications with Partial-Band Interference

    Publication Year: 1985, Page(s):570 - 574
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (831 KB)

    Several diversity combining techniques are considered for applications to frequency-hop communications with partial-band interference. These diversity combining schemes are based on Viterbi's ratio threshold technique. The frequency-hop system considered has binary orthogonal signaling and noncoherent demodulation. A quiescent noise level is included in the analysis to account for thermal noise in... View full abstract»

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  • Multiple-Access Capability of Frequency-Hop Spread-Spectrum Communication

    Publication Year: 1985, Page(s):575 - 579
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (677 KB)

    The multiple-access capability of frequency-hop spread-spectrum communication is considered from an information theoretic viewpoint. The model adopted is that of an interference channel with T source-receiver pairs with ith receiver only interested in the message produced by the ith source. Different transmitters use different frequency-hopping patterns which we model as rand... View full abstract»

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  • The Selection of Non-Repeating PN Codes for Code Division Multiple Access

    Publication Year: 1985, Page(s):580 - 585
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    First Page of the Article
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  • Principles of Spread Spectrum Radar

    Publication Year: 1985, Page(s):586 - 590
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (690 KB)

    This paper presents a general class of ranging waveforms which utilize a code sequence as a means of achieving high range/Doppler resolution and good self clutter performance. The generalized waveform is defined and the primary analysis tools are developed. The concept of a random ambiguity function is introduced. System processing architectures and code waveform design guidelines are developed. E... View full abstract»

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  • Performance of Selected Coded Direct-Sequence Receiver Structures in Pulsed Interference

    Publication Year: 1985, Page(s):591 - 597
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1206 KB)

    We consider the performance of short constraint-length convolutional codes in conjunction with coherent BPSK direct-sequence spread-spectrum modulation in a variety of pulsed interference scenarios. We explore the use of several types of imperfect interference estimation mechanisms and the resulting impact on Viterbi decoder bit error probability performance. Our digital receiver structures elimin... View full abstract»

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  • Processing Gain Improvement by Means of Replica Subtraction in Code Division Multiple Access Systems

    Publication Year: 1985, Page(s):598 - 602
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB)

    The paper presents a performance evaluation of code division multiple access (CDMA) systems, using signal replica transmission and interference subtraction thereafter in the receiver. Asynchronous direct sequence systems, using two transmission channels, are discussed. The two incoming signals in the receivers are coherently multiplied by IF frequency quadrature components, enabling the eliminatio... View full abstract»

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  • Development and Evaluation of an LPI Figure of Merit for Direct-Sequence and Frequency-Hop Systems

    Publication Year: 1985, Page(s):603 - 608
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (928 KB)

    This paper investigates the performance evaluation problem associated with the design of a low probability of intercept system. Two general methods for evaluating the LPI performance are proposed and described: An interception-time figure of merit and a probability-of-intercept figure of merit. The latter of the two was favored and studied in detail. The performances of frequency-hop and direct-se... View full abstract»

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  • A Comparison of Two Methods for Very-Low-Rate Speech Coding

    Publication Year: 1985, Page(s):609 - 613
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    Vector quantization (VQ) has been used recently for developing vocoders operating below 800 b/s. We describe in this paper two systems that use VQ and transmit intelligible speech in the range of 300 to 600 b/s. The frame vocoder which uses VQ for quantizing the spectral parameters of a single frame of speech was found to be most effective at the higher rate of 600 b/s. The segment vocoder which u... View full abstract»

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  • An Overview of Matrix Quantizer Design using the Generalized Lloyd Algorithm

    Publication Year: 1985, Page(s):614 - 619
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    This paper gives a tutorial review of extensions of the Lloyd vector quantizer called matrit quantizers. The Lloyd matrix quantizer arises naturally from the minimization step in linear prediction, where the minimization takes place over a codebook of inverse filter models. Rate-distortion theory predicts possible bit-rate savings for increasing block length N when such a code-book is optimized. E... View full abstract»

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  • Transform Coding of Speech with Pyramid Vector Quantization

    Publication Year: 1985, Page(s):620 - 623
    Cited by:  Papers (4)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (593 KB)

    The pyramid vector quantizer (PVQ) is a lattice quantizer that was motivated bv the geometric properties of a memoryless Laplacian source. For large rates and the cubic lattice. the PVQ provides improvements of 2.39, 5.64, and 8.40 dB for memoryless Gaussian, Laplacian, and gamma sources, respectivelv, compared to the corresponding optimum (noniuniform) scalar quantizer. The lattice basis of the P... View full abstract»

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  • New Technique for Combined Pixel and Frequency Domain Image Sequence Coding

    Publication Year: 1985, Page(s):624 - 627
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    This paper describes a technique for producing an optimal set of linear basis function coefficients given a priori information about the image to be transmitted. In particular, when certain pixel domain data is known, the transmitted frequency coefficients can be adjusted to make use of this information. The algorithm utilizes successive projections onto two non-intersecting sets in order to deter... View full abstract»

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  • Image Coding System - A Single Processor Implementation

    Publication Year: 1985, Page(s):628 - 634
    Cited by:  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1778 KB)

    In this paper we present the design of a still image coder. The system is built around the TNS320 digital signal processor, and is based on the Adaptive Cosine Transform Coding (ACTC) algorithm presented by Chen and Smith [1]. The algorithm is simplified in order to overcome the TMS320 hardware limitations, and computational shortcuts are introduced to speed up coding and decoding processing time.... View full abstract»

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  • Applications of Integrated Service Digital Networks in the Defense Communications System

    Publication Year: 1985, Page(s):635 - 639
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (714 KB)

    Many of the characteristics of a commercial ISDN have counterparts in the Department of Defense plans for a military World Wide Digital Systems Architecture. This paper reviews a number of ISDN issues and discusses their potential impact on the development of the WWDSA. The ISDN architecture is discussed with emphasis on the user/network interface. Current ISDN status is summarized. View full abstract»

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