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Military Communications Conference, 1996. MILCOM '96, Conference Proceedings, IEEE

Date 24-24 Oct. 1996

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  • IEEE Military Communications Conference - Milcom 96 [front matter]

    Publication Year: 1996, Page(s):i - xxiv
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    Freely Available from IEEE
  • A near optimum diversity combining method adapted to slow frequency hopping DPSK transmission

    Publication Year: 1996, Page(s):984 - 987 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (370 KB)

    Frequency hopping (FH) is used in communication systems to mitigate interference such as jamming. For low data rate, fast FH and MFSK are often used in combination with diversity, which consists in transmitting every symbol on several hops. It brings additional protection. Several robust diversity combining methods have been developed previously for fast FH. Much attention has been previously focu... View full abstract»

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  • Conference Author Index

    Publication Year: 1996, Page(s):1084 - 1086
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    Freely Available from IEEE
  • A nine-tile algorithm for LPI signal detection using QMF filter bank trees

    Publication Year: 1996, Page(s):974 - 978 vol.3
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    This paper describes a novel spread spectrum intercept receiver which uses orthogonal wavelet techniques and a quadrature mirror filter (QMF) bank tree to decompose a waveform into components representing the energy in rectangular “tiles” in the time-frequency plane. Specifically, a nine-tile algorithm is presented and discussed. By simultaneously examining multiple layers of the tree,... View full abstract»

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  • Fully digital joint phase recovery, timing synchronization and data sequence demodulation

    Publication Year: 1996, Page(s):819 - 823 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    A joint estimator for carrier phase, symbol timing, and data sequence is proposed. This fully digital scheme is systematically derived from the maximum likelihood estimation (MLE) theory. The simulation and the analytical results demonstrate that the scheme is asymptotical to the optimum in AWGN channel View full abstract»

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  • Symphony or calliope-frequency management with mobile satellite services

    Publication Year: 1996, Page(s):943 - 947 vol.3
    Cited by:  Patents (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    This paper examines the characteristics of the new mobile satellite services of big LEOs: Globalstar, Iridium, Odyssey and ICO to identify frequency and modulation interference issues. It also details how each of the systems will re-use frequencies to obtain the maximum number of subscriber channels within their allowed bandwidth and discusses the interference issues between providers that are sha... View full abstract»

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  • ATM multimedia switching

    Publication Year: 1996, Page(s):774 - 778 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (920 KB)

    Shared situation awareness requirements indicate the balance of battlefield information will shift from a predominately voice infrastructure to a truly multimedia environment. As long as the battlefield communication systems remain mobile assets, bandwidth will always be a limited commodity, regardless of improvements in the radio transmission capabilities. As such, efficiency in managing the band... View full abstract»

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  • FEC schemes for ATM traffic over wireless links

    Publication Year: 1996, Page(s):948 - 953 vol.3
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    ATM traffic carried over fiber optic links experiences low bit error rates (BER). For this reason, cell error/loss recovery techniques for ATM networks have thus far concentrated on cell losses due to congestion and buffer overflow at network switches. In this paper we analyze a different network scenario, namely ATM networks where the end-to-end link includes wireless media. The BER of these medi... View full abstract»

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  • The case for multiply-detected macrodiversity scheme in mobile systems

    Publication Year: 1996, Page(s):928 - 932 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    The multiply-detected macrodiversity (MDM) is based on post-detection combining; i.e., it is a macrodiversity scheme with a number of received signals being detected and a decision algorithm being employed to maximize the probability of correct decision. We compare the performance of the MDM scheme with the traditional S/I-diversity and show the achievable improvement. As a rule of thumb, improvem... View full abstract»

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  • IP multicasting for wireless mobile hosts

    Publication Year: 1996, Page(s):933 - 937 vol.3
    Cited by:  Papers (3)  |  Patents (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (596 KB)

    We consider the problem of efficient multicast support for mobile wireless hosts in TCP/IP networks. We summarize techniques supporting multicasting and mobility, along with their constraints and interactions, and explore architectural alternatives for solutions to the combined problem that remain compatible with the existing architecture. We propose a new mechanism for group management, optimized... View full abstract»

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  • DPSK demodulation with Doppler compensation

    Publication Year: 1996, Page(s):1074 - 1078 vol.3
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    This paper presents a technique for communications in the presence of rapidly varying Doppler. The modulation selected for this application is differential phase shift keying (DPSK). A number of receiver structures are proposed and their performance examined. It is shown that reliable communications can be achieved even at a data rate as low as 75 b/s and a Eb/N0 of only 4-8 ... View full abstract»

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  • Channel utilization efficiency and throughput of random-access multichannel CDMA systems with multiuser detection

    Publication Year: 1996, Page(s):918 - 922 vol.3
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    All multiuser detection (MD) algorithms proposed so far are constrained by either complexity or implementation costs. This fact makes it impossible to apply these algorithms directly in a traditional single channel CDMA system to support a large number of simultaneous users. Multichannel CDMA (MCDMA) communication systems are considered to support a much larger population of simultaneous users tha... View full abstract»

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  • The CBEA algorithm: a cross-correlation approach to blind equalization and comparison with existing methods

    Publication Year: 1996, Page(s):849 - 853 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    A novel cross-correlation based framework is proposed for the problem of blind equalization. We assume that we have access to two observations, corresponding to the outputs of two channels excited by the same input. We propose a new algorithm which estimates the channels using as basic tool the phase of the cross spectrum of functions of the observations. The proposed method is computationally att... View full abstract»

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  • Diversity reception in alpha-stable impulsive interference

    Publication Year: 1996, Page(s):828 - 832 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    We evaluate the performance of asymptotically optimum multichannel structures for incoherent detection of amplitude-fluctuating bandpass signals in impulsive interference modeled as a bivariate, isotropic, symmetric, alpha-stable process. We derive a test statistic that takes into account the infinite variance in the noise model and approaches the performance of the strictly optimum algorithm for ... View full abstract»

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  • Noncoherent PN code acquisition with data modulation-on under static and fading environments

    Publication Year: 1996, Page(s):998 - 1002 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    Almost all conventional spread-spectrum acquisition schemes assume no data modulation or transition during the acquisition period, because the performance of the acquisition process is significantly degraded when data is present. In practical applications, modulation-off requirements during acquisition period cause inconvenience and delays, such as request and acknowledgment before data transmissi... View full abstract»

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  • Generalized sliding window algorithm with applications to frame synchronization

    Publication Year: 1996, Page(s):796 - 800 vol.3
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    All frame synchronization systems have a part that detects out-of-frame condition. This paper proposes a generalized sliding window algorithm for out-of-frame detection. This algorithm includes a large number of new schemes not previously considered. The essential statistical properties of the algorithm are given for a range of cases. The algorithm and the associated statistical analysis can be ex... View full abstract»

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  • Performance of DS/SSMA systems using TCM under impulsive noise environment

    Publication Year: 1996, Page(s):1079 - 1083 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    In this paper, we investigate the effects of impulsive noise on the DS/SSMA systems using TCM. The performance of the DS/SSMA systems using TCM under impulsive noise environment is analyzed. We obtain the bound of the probability of bit error of the systems, considering both impulsive noise and Rician fading unavoidable in mobile communication environments. It turns out that we can achieve some co... View full abstract»

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  • A simple scheme for interconnecting wireless networks to ATM broadband networks

    Publication Year: 1996, Page(s):769 - 773 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    With the emerging ATM broadband networks and next generation wireless networks, there will be a need for connectivity between these networks. The interconnection of these networks has received some consideration in the literature. For providing seamless interconnection, it is desirable to introduce ATM technology in the wireless networks also. In an ATM network, VPI (virtual path identifier) and V... View full abstract»

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  • Performance measures for adaptive antenna systems

    Publication Year: 1996, Page(s):1050 - 1054 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    As the desire for jamming-resistant satellite communication grows, adaptive antennas will soon enter service on satellite platforms. These antennas cancel received interference to a low level while preserving as much user coverage as possible. The specification of adaptive antenna performance has considerable subtlety. Such antennas need measures of quiescent and steady-state adapted performance, ... View full abstract»

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  • Blind identification and array processing applications of generalized higher-order statistics

    Publication Year: 1996, Page(s):838 - 842 vol.3
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB)

    Generalized higher-order statistics (GHOS) has been proposed as a possible approach to handle signals which may involve α-stable processes for which traditional higher-order statistics (HOS) can not be applied. Initial research results on GHOS revealed that GHOS may actually be a valuable tool for the analysis and processing of signals which do not contain α-stable processes, as well. ... View full abstract»

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  • A novel user-to-user protocol for the establishment of multimedia associations adopting a comprehensive QoS approach

    Publication Year: 1996, Page(s):755 - 759 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    A new ACSE (Association Control Service Element) protocol for multimedia communications is designed and analyzed. The proposed protocol (C-MACSE) adopts a comprehensive approach for quality of service (QoS) and provides services for the establishment and management of multimedia associations among spatially dispersed users, considering QoS issues related with the network and the operating system f... View full abstract»

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  • Maximum likelihood PSK classifier

    Publication Year: 1996, Page(s):1010 - 1014 vol.3
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    A method is presented for the classification of the number of levels on a PSK signal in additive white Gaussian noise (AGWN). The technique uses maximum likelihood principles on the baseband quadrature samples, and has the flexibility to incorporate an arbitrary number of PSK types. The classification performance is examined theoretically and is found to provide better performance than any of the ... View full abstract»

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  • Fast converging methods for multichannel blind equalization or separation of multipath mixtures

    Publication Year: 1996, Page(s):854 - 858 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    Algorithms for adapting FIR filters can also be applied to adaptation of FIR separation matrices (with multipath) for source separation. Fast converging algorithms robust to eigenvalue disparity are of interest, such as the exact least squares methods from the area of adaptive filters. Time domain adaptive multichannel blind recursive least squares (MBRLS) is presented. Three frequency domain algo... View full abstract»

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  • Analysis of a DPSK link with on board processing and diversity for medium data rate EHF frequency hopping systems: compromise between the SATCOM system operating and jamming performances

    Publication Year: 1996, Page(s):1064 - 1068 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    We analyse a DPSK link with on-board-processing and diversity combining features for medium data rate frequency hopping systems. In a system approach, we address the following questions. (1) What is the optimum diversity combining solution that can both multiplex the data rates and protect the system against jammers? (2) What is the best compromise between satellite transmitted power, ground termi... View full abstract»

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  • Asymptotic throughput of the FED-STD-1052 data link protocol

    Publication Year: 1996, Page(s):700 - 705 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    There has been a rapid evolution of data communication technologies specially adapted to the challenges of HF skywave channels. The 1980s saw the development of advanced HF modems that achieve significant processing gains through adaptive equalization and advanced coding. The standardized HF data link link protocol of FED-STD-1052 and MIL-STD-187-721C effectively uses the capabilities of these new... View full abstract»

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