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Communication Networks and Services Research Conference, 2008. CNSR 2008. 6th Annual

Date 5-8 May 2008

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Displaying Results 1 - 25 of 101
  • [Front cover]

    Publication Year: 2008, Page(s): C1
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  • [Title page i]

    Publication Year: 2008, Page(s): i
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  • [Title page iii]

    Publication Year: 2008, Page(s): iii
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  • [Copyright notice]

    Publication Year: 2008, Page(s): iv
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  • Table of contents

    Publication Year: 2008, Page(s):v - xii
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  • Conference Program Committee Welcome Message

    Publication Year: 2008, Page(s): xiii
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  • Conference Program Organizing Committee

    Publication Year: 2008, Page(s): xiv
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  • Technical Program Committee

    Publication Year: 2008, Page(s):xv - xvi
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  • list-reviewer

    Publication Year: 2008, Page(s):xvii - xviii
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  • Keynote 1 - Algorithmic Methods for Sponsored Search Advertising

    Publication Year: 2008
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  • Keynote 2 - Network Coding: A Revolution in the Making?

    Publication Year: 2008, Page(s): xx
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (235 KB) | HTML iconHTML

    Summary form only given. This paper presents an overview of the theory and application of linear network coding in packet networks is provided. The ideas are being applied to create new content dissemination protocols in the Internet and in wireless networks. It also sketches the problem of error-and erasure-correction in network-coded packet transmission systems. View full abstract»

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  • Keynote 3 - Distributed Pattern Matching

    Publication Year: 2008, Page(s): xxi
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    Summary form only given. Since the advent of P2P technology experts from industry and academia have proposed a number of search techniques - none of which is able to provide satisfactory solution to the conflicting requirements of search efficiency and flexibility. Structured search techniques, mostly DHT-based, are bandwidth efficient while semi(un)-structured techniques are flexible. But, neithe... View full abstract»

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  • Transceiver Technologies for Impulse Radio Ultra Wideband (IR UWB) Wireless Systems

    Publication Year: 2008, Page(s):3 - 4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (393 KB) | HTML iconHTML

    In this tutorial, with the above-described multipath problem as a key problem to solve, we will present in detail the following four technical subjects related to the transceiver design for the IR UWB systems: i) the effects of UWB antennas and related RF frontends on the multipath patterns of the received IR UWB signals; ii) the IEEE 802.15.4a multipath models for the applications of IR-UWB syste... View full abstract»

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  • Next-Generation Broadband Networks

    Publication Year: 2008, Page(s): 5
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (374 KB) | HTML iconHTML

    Broadband wireless access is viewed by many telephone and cable operators as a "disruptive" technology and rightly so. The broadcast nature of wireless transmission offers ubiquity and immediate access for both fixed and mobile users, clearly a vital element of quadruple play services involving voice, video, data, and mobility. Unlike wired access (copper, coax, fiber), a large portion of the depl... View full abstract»

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  • Secure Communication in Next Generation Internet

    Publication Year: 2008, Page(s):6 - 7
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (433 KB) | HTML iconHTML

    In recent years, network security has emerged as one of the most important challenge for many organizations. The enormous proliferation of the Internet and emergence of unified data, voice and multimedia services are responsible for emerging communication models that are essential for successful business activity of any organization. However, the increasing numbers of sophisticated security threat... View full abstract»

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  • Ultra Mobile Broadband Technology Overview

    Publication Year: 2008, Page(s):8 - 9
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (241 KB) | HTML iconHTML

    The 3GPP2 ultra mobile broadband (UMB) system is designed for robust mobile broadband access and is optimized for high spectral efficiency and short latencies using advanced modulation, link adaptation and multi-antenna transmission techniques. The UMB system uses OFDM as the main modulation technique. The Ultra Mobile Broadband standard UMB can operate in a wide range of deployments, thereby prov... View full abstract»

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  • MPEG-4 AVC Video Traffic Smoothing for Broadband Cable Networks

    Publication Year: 2008, Page(s):13 - 17
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB) | HTML iconHTML

    This paper presents a new rate-limited traffic smoothing algorithm for MPEG-4 AVC video traffic suitable for switched digital video cable deployments. It will be shown that the algorithm reduces bit rate variability and offers high buffer utilization. Such a smoothing algorithm can also minimize packet losses due to buffer overflows at the STB. View full abstract»

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  • Overall Performance Assessment of Energy-Aware Cooperative Techniques Exploiting Multiple Description and Scalable Video Coding Schemes

    Publication Year: 2008, Page(s):18 - 24
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1810 KB) | HTML iconHTML

    In this paper we develop and analyze energy-efficient cooperative techniques for multimedia applications over wireless networks. The composite cellular-short-range network architecture is explored by using multiple description coding and scalable video coding schemes. In order to provide an overall and fair assessment of the schemes, different approaches are evaluated and discussed. The techniques... View full abstract»

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  • Short-Term MPEG-4 AVC Bandwidth Prediction for Broadband Cable Networks

    Publication Year: 2008, Page(s):25 - 29
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (422 KB) | HTML iconHTML

    In this paper, we propose and evaluate the accuracy of a new traffic model that predicts, in the short term, the size of the B-frames of MPEG-4 AVC compressed video. To quantify the prediction accuracy, a model for the prediction error is also proposed. In a broadband cable network, the prediction model can be employed by a cable headend to provision video bandwidth efficiently or more importantly... View full abstract»

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  • The Semantics of Mobile TV

    Publication Year: 2008, Page(s):30 - 37
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (750 KB) | HTML iconHTML

    In order for a ubiquitous semantic Web-enabled global network to emerge, it is evident that many significant sub-domains must first evolve. A sub- domain, in this sense, can be thought of as a structured representation of a set of concepts and their associated attributes and terms within a given domain. Domains, which are a logical grouping of sub- domains, may span many different applications, We... View full abstract»

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  • Low Autocorrelation Fractional PTS Subblocking for PAPR Reduction in OFDM Systems

    Publication Year: 2008, Page(s):41 - 45
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (406 KB) | HTML iconHTML

    Partial transmit sequence (PTS) is a distortionless technique used to reduce the peak-to-average power ratio (PAPR) of an orthogonal frequency division multiplexing (OFDM) signal. However, PTS has a relatively high computational complexity due to the computation of multiple inverse fast Fourier transforms (IFFTs). To reduce this complexity, fractional subblocking was introduced where a subset of i... View full abstract»

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  • Improved Compensation of HPA Nonlinearities Using Digital Predistorters with Dynamic and Multi-dimensional LUTs

    Publication Year: 2008, Page(s):46 - 52
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (459 KB) | HTML iconHTML

    Orthogonal frequency division multiplexing (OFDM) has been widely adopted in communications systems due to its high spectral efficiency and resistance to multipath fading and impulse noise. However, because of its large peak-to-average power ratio (PAPR), OFDM is highly sensitive to nonlinear distortion. In wireless systems, where to achieve acceptable power efficiency, the high power amplifiers (... View full abstract»

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  • A Sub-optimal Eigenvalue-Based Adaptive Modulation Scheme for Broadband MIMO-OFDM Systems

    Publication Year: 2008, Page(s):53 - 58
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (415 KB) | HTML iconHTML

    The ability to provide high data rate is a key measure in 3GPP long term evolution (LTE). Multiple input multiple output (MIMO) has emerged as an technique that increases the data rates in 3G systems. In this paper we study MIMO-OFDM system based on adaptive modulation and investigate the preceding technology. We present a method for adaptive modulation based on eigenvalues and a preceding matrix ... View full abstract»

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  • The Effect of Coding on OFDM and Single Carrier Transmission with Decision Feedback Equalizer

    Publication Year: 2008, Page(s):59 - 63
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (469 KB) | HTML iconHTML

    Single carrier transmission (SCT) is a competing technique for orthogonal frequency division multiplexing (OFDM) in broadband wireless systems (BWS). Recent developments in frequency domain equalization (FDE) using decision feedback equalization (DFE) have greatly improved the system based on the single carrier (SC) technique. This paper presents the comparison of the effect of coding on OFDM and ... View full abstract»

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  • Analysis of Threats to the Security of EPC Networks

    Publication Year: 2008, Page(s):67 - 74
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (470 KB) | HTML iconHTML

    Detecting and responding to security and privacy threats to Electronic Product Code (EPC) and Radio Frequency IDentification (RFID) technologies are becoming major concerns of information security researchers. However, and before going further in these activities, an evaluation of the threats in terms of importance must be done. We present such an evaluation. Our analysis of the threats is based o... View full abstract»

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