Browsing Scientific Publications in Information and Communication Technology by Issue Date
Now showing items 21-40 of 772
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Secure and Efficient Data Storage in Unattended Wireless Sensor Networks
(Journal article; Peer reviewed, 2009)Providing forward and backward secrecy is still a big challenge in Unattended Wireless Sensor Networks (UWSNs), though some storage schemes have been proposed. Additionally, high storage requirement needs efficient storage ... -
Cooperative RTS/CTS MAC with relay selection in distributed wireless networks
(Journal article; Peer reviewed, 2009)This paper proposes a cooperative multiple access protocol based on the distributed coordination function (DCF) request-to-send/clear-to-send (RTS/CTS) scheme for distributed wireless networks. It answers three key questions ... -
An automatic cooperative retransmission MAC protocol in wireless local area networks
(Chapter; Peer reviewed, 2009)Existing solutions for cooperation in wireless networks either require simultaneous transmission of source and relay nodes or impose major modifications to original MAC protocols. In this paper, a new efficient retransmission ... -
Velocity estimation in wideband mobile stations equipped with multiple antennas
(Journal article; Peer reviewed, 2009)A new method is proposed for estimating the velocity of wideband mobile stations (MSs) equipped with multiple antennas. The MS speed is determined using the well-known relationship between the direction-of-arrivals (DOAs) ... -
Level-crossing rate and average duration of fades of the envelope of mobile-to-mobile fading channels in K-parallel dual-hop relay networks
(Chapter; Peer reviewed, 2009)This paper studies the fading behavior of narrowband mobile-to-mobile (M2M) fading channels in dual-hop distributed cooperative multi-relay systems under non-line-of-sight (NLOS) propagation conditions. M2M fading channels ... -
Media Delivery to Remote Renderers Controlled by the Mobile Phone
(Journal article; Peer reviewed, 2009)In today's content delivery solutions, service delivery and control are still tightly coupled, a service typically being delivered to the same device that controls the session. We present a solution that was designed with ... -
LCRT : A ToA Based Mobile Terminal Localization Algorithm in NLOS Environment
(Journal article; Peer reviewed, 2009)Non line-of-sight (NLOS) propagation in range measurement is a key problem for mobile terminal localization. This paper proposes a low computational residual test (LCRT) algorithm that can identify the number of line-of-sight ... -
The Impact of Fixed and Moving Scatterers on the Statistics of MIMO Vehicle-to-Vehicle Channels
(Journal article; Peer reviewed, 2009)In this paper, we study the impact of fixed and moving clusters of scatterers on the statistics of multiple- input multiple-output (MIMO) vehicle-to-vehicle (V2V) channels. Double-bounce scattering is assumed for fixed ... -
Performance comparison of residual related algorithms for ToA positioning in wireless terrestrial and sensor networks
(Chapter; Peer reviewed, 2009)Time of Arrival (ToA) is a popular technique for terrestrial positioning. This paper presents a comparison of ToA based residual related positioning algorithms in wireless terrestrial and sensor networks in both long range ... -
The Riemann sum method for the design of sum-of-cisoids simulators for Rayleigh fading channels in non-isotropic scattering environments
(Journal article; Peer reviewed, 2009)In this paper, we introduce the Riemann sum method (RSM) as an effective tool for the design of sum-of-cisoids (SOC) simulators for narrowband mobile Rayleigh fading channels under non-isotropic scattering conditions. We ... -
A Single radio based channel datarate-aware parallel rendezvous MAC protocol for cognitive radio networks
(Journal article; Peer reviewed, 2009)Channel hopping based parallel rendezvous multichannel MAC protocols have several advantages since they do not need a control channel, require only one transceiver, and produce higher system capacity. However, channel ... -
Cooperative Medium Access Control in Wireless Networks : The Two-Hop Case
(Journal article; Peer reviewed, 2009)Cooperative communication has been recently proposed as a powerful means to improve network performance in wireless networks. However, most existing work focuses solely on one-hop source-destination cooperation. In this ... -
A non-stationary MIMO vehicle-to-vehicle channel model based on the geometrical T-junction model
(Chapter; Peer reviewed, 2009)In this paper, we derive a non-stationary multiple-input multiple-output (MIMO) vehicle-to-vehicle (V2V) channel model from the geometrical T-junction model. The propagation environment is assumed to be extremely non-isotropic. ... -
An enhanced TCP congestion avoidance scheme and its performance evaluation in high speed satellite networks
(Chapter; Peer reviewed, 2009)High speed satellite communication networks are emerging as part of the future global wireless communication systems. However, existing transmission control protocols for satellite networks do not provide satisfactory ... -
Performance Analysis of Wideband Sum-of-Cisoids-Based Channel Simulators with Respect to the Bit Error Probability of DPSK OFDM Systems
(Journal article; Peer reviewed, 2009)In this paper, we analyze the performance of a wideband sum-of-cisoids (SOC) channel simulator w.r.t. the bit error probability (BEP) of differential phase-shift keying (DPSK) orthogonal frequency division multiplexing ... -
A novel traffic splitting policy for performance improvement in wireless mesh networks
(Chapter; Peer reviewed, 2009)Wireless mesh networks are expected to play an important role in the next-generation wireless communication systems as it can provide wide coverage and scalable broadband Internet access services. However, as more traffic ... -
A continuous-space analytical approach for relay node placement in hybrid cellular and ad hoc networks
(Journal article; Peer reviewed, 2009)A hybrid network is composed of a cellular component and an ad hoc component connected by a relay node, for the purpose of coverage extension and/or capacity improvement. In this paper, we analyze the capacity of such a ... -
Towards Improved Healthcare Performance: Examining Technological Possibilities and Patient Satisfaction with Wireless Body Area Networks
(Journal article; Peer reviewed, 2010)This paper investigates the benefits of using less intrusive wireless technologies for heart monitoring. By replacing well established heart monitoring devices (i.e. Holter) with wireless ECG based Body Area Networks (BAN), ... -
A survey on peer-to-peer SIP based communication systems
(Journal article; Peer reviewed, 2010)Recently, both academia and industry have initiated research projects directed on integration of P2PSIP paradigm into communication systems. In this paradigm, P2P network stores most of the network information on each ... -
Location-Aware Mobile Intrusion Detection with Enhanced Privacy in a 5G Context
(Journal article; Peer reviewed, 2010)The paper proposes a location-aware mobile Intrusion Prevention System (mIPS) architecture with enhanced privacy that is integrated in Managed Security Service (MSS). The solution is envisaged in a future fifth generation ...