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2009 IEEE International Conference on Communications

Date 14-18 June 2009

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Displaying Results 1 - 25 of 1038
  • ICC 2009 - Title page

    Publication Year: 2009, Page(s): i
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  • ICC 2009 [Copyright notice]

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  • ICC 2009 Greetings from the General Chair

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  • ICC 2009 Greetings from the TPC Chair

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  • ICC 2009 Patrons

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  • ICC 2009 Organizing Committee

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  • ICC 2009 IEEE Communications Society

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  • ICC 2009 Schedule at a glance

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  • ICC 2009 Techincal Symposia

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  • 2nd Order Cyclostationarity of OFDM Signals: Impact of Pilot Tones and Cyclic Prefix

    Publication Year: 2009, Page(s):1 - 5
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (822 KB) | HTML iconHTML

    This paper deals with 2nd order cyclostationarity of orthogonal frequency division multiplex (OFDM) signals. A new generalized formula for the spectral correlation density (SCD) function is derived. Compared to related work in the literature, our derivation is not restricted to the case that all sub-carriers of an OFDM signal carry statistically independent data. The reason for that is ... View full abstract»

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  • 3G/HSPA Performance in Live Networks from the End User Perspective

    Publication Year: 2009, Page(s):1 - 6
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (547 KB) | HTML iconHTML

    Operators around the world are improving their 3G/UMTS networks by introducing HSPA (High Speed Packet Access) that includes both, enhanced uplink and downlink. The HSPA is expected to finally provide the mobile broadband access that is able to compete with the fixed connections in performance regarding popular applications such as Web browsing, VoIP, and video. However, it has remained unclear ho... View full abstract»

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  • A 3-D Markov Chain Queueing Model of IEEE 802.11 DCF with Finite Buffer and Load

    Publication Year: 2009, Page(s):1 - 5
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (173 KB) | HTML iconHTML

    We introduce a 3-dimensional Markov chain that integrates the IEEE 802.11 DCF contention resolution and queueing processes into one model. Important QoS measures, delay and loss, plus throughput and queue length, can be obtained for a realistic systems with finite buffer under finite load. We present an efficient method for solving the steady state probabilities of the Markov chain. Simulations co... View full abstract»

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  • A Behaviour Study of Network-Aware Stealthy Worms

    Publication Year: 2009, Page(s):1 - 5
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (185 KB) | HTML iconHTML

    This paper examines the general behaviour of stealthy worms. In particular, we focus on worms that are designed based on network awareness. We study the case where a worm, instead of aiming to spread as fast as possible and penetrate intrusion detection systems (IDS), aims to avoid IDS and spread with the minimum number of detections. We compare different scanning strategies for this worm, includi... View full abstract»

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  • A Blind Channel Estimation Algorithm for Space-Time Coded MC-CDMA Receivers

    Publication Year: 2009, Page(s):1 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (241 KB) | HTML iconHTML

    In this paper we proposed a linearly constrained minimum variance receiver for a space-time coded multicarrier (MC) CDMA system in frequency selective fading channels. It is shown that in the proposed receiver the channel can be blindly estimated as the eigenvector that corresponds to the maximum eigenvalue of an autocorrelation matrix, and then, efficient algorithms for subspace tracking can be u... View full abstract»

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  • A Body Surface Coordinator for Implanted Biosensor Networks

    Publication Year: 2009, Page(s):1 - 5
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (258 KB) | HTML iconHTML

    Biomedical sensors can be implanted and networked in the human body for health monitor, diagnosis, treatment or as a prosthetic device. Life time and heat generated by implant due to communication and circuitry power consumption are big concerns. This paper presents a new network architecture for long range communications in the implanted sensor networks. We measured the on-body propagation around... View full abstract»

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  • A Case Study for Evaluating IEEE 802.15.4 Wireless Sensor Network Formation with Mobile Sinks

    Publication Year: 2009, Page(s):1 - 5
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1015 KB) | HTML iconHTML

    Wireless Sensor Networks are traditionally composed of a multiplicity of sensor nodes that sense given phenomena and deliver the sensed data to specific sink nodes. In the most of the application scenarios, sensor nodes have been considered motionless. On the contrary, interesting possibilities arise if some sensors are embedded in devices carried by mobile agents as people, cars, animals, etc. If... View full abstract»

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  • A Chaotic Maps-Based Key Agreement Protocol that Preserves User Anonymity

    Publication Year: 2009, Page(s):1 - 6
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (181 KB) | HTML iconHTML

    A key agreement protocol is a protocol whereby two or more communicating parties can agree on a key or exchange information over an open communication network in such a way that both of them agree on the established session keys for use in subsequent communications. Recently, several key agreement protocols based on chaotic maps are proposed. These protocols require a verification table to verify ... View full abstract»

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  • A Combined Approach for Receiver-Based MAC and Network Layers in Wireless Sensor Networks

    Publication Year: 2009, Page(s):1 - 6
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (254 KB) | HTML iconHTML

    Data communication represents the greatest energy cost of wireless sensor networks. Both MAC and network layers of the protocol stack are responsible for data communication in these networks. This work proposes the Receiver- based Medium Access Control (Rb-MAC) protocol to be used in a combined solution with a receiver-based routing scheme. The main advantage of combining receiver-based MAC and ro... View full abstract»

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  • A Comprehensive Analytical Model for Weighted Fair Queuing under Multi-Class Self-Similar Traffic

    Publication Year: 2009, Page(s):1 - 5
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (169 KB) | HTML iconHTML

    Weighted fair queueing (WFQ) is a practical scheduling discipline for supporting differentiated quality-of-service (QoS) in computer networks and communication systems. Analytical models are important tools for system performance evaluation and resource optimization. However, there is not any comprehensive model reported in the open literature for analytically investigating the performance behavio... View full abstract»

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  • A Compressed Sensing Based Ultra-Wideband Communication System

    Publication Year: 2009, Page(s):1 - 5
    Cited by:  Papers (25)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (275 KB) | HTML iconHTML

    Sampling is the bottleneck for ultra-wideband (UWB) communication. Our major contribution is to exploit the channel itself as part of compressed sensing, through waveform-based pre-coding at the transmitter. We also have demonstrated a UWB system baseband bandwidth (5 GHz) that would, if with the conventional sampling technology, take decades for the industry to reach. The concept has been demonst... View full abstract»

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  • A Cooperative Scheme for Dynamic Window Resizing in P2P Live Streaming

    Publication Year: 2009, Page(s):1 - 5
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (130 KB) | HTML iconHTML

    Due to their widespread popularity, peer-to-peer (P2P) live streaming systems have become a great challenge for Internet service providers (ISPs) as they consume huge amount of Internet bandwidth. By observing that different users may watch a channel with different window sizes, we propose a cooperative scheme called partial participation scheme (PPS) in which different peers request a video strea... View full abstract»

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  • A Cooperative Vehicular Network Framework

    Publication Year: 2009, Page(s):1 - 6
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB) | HTML iconHTML

    Vehicular Ad Hoc Networks are networks characterized by intermittent connectivity and rapid changes in their topology. This paper addresses car-to-road communications in which vehicles use Access Points (AP) in a Delay Tolerant Network architecture. Results show how the combination of a Delay-Cooperative ARQ mechanism reduces packet losses and in conjunction with a Carry-and-Forward cooperative me... View full abstract»

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  • A Cross Layer Fast Handover Scheme in VANET

    Publication Year: 2009, Page(s):1 - 5
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (516 KB) | HTML iconHTML

    This study presents a cross-layer fast handover scheme for VANET, called vehicular fast handover scheme (VFHS), where the physical layer information is shared with the MAC layer, to reduce the handover delay. The key idea of VFHS is to utilize oncoming side vehicles (OSVs) to collect physical and MAC layers information of passing through RVs and broadcast the information to vehicles that are tempo... View full abstract»

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  • A Cross-Layer Perspective on Rateless Coding for Wireless Channels

    Publication Year: 2009, Page(s):1 - 6
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (250 KB) | HTML iconHTML

    Rateless coding ensures reliability by providing ever-increasing redundancy, traditionally at the packet level (i.e. the application layer) through erasure coding. This paper explores whether additional redundancy for wireless channels is most helpful at the packet level through erasure coding or at the physical layer through lower-rate channel coding. This cross-layer trade-off is explored in a t... View full abstract»

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  • A Data-Aided Symbol Timing Estimation Algorithm for OFDM/OQAM Systems

    Publication Year: 2009, Page(s):1 - 5
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB) | HTML iconHTML

    In this paper we deal with the problem of data- aided symbol timing estimation for orthogonal frequency division multiplexing systems based on offset-QAM modulation (OFDM/OQAM). Specifically, a data-aided joint phase offset and symbol timing estimator, based on the least squares (LS) approach, exploiting the conjugate-symmetry property of a properly designed training symbol, is derived. Since the ... View full abstract»

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