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(10361 results)-
Whitepapers
Performance Analysis of Shortest Path Energy Efficient Routing Protocol in Wireless Sensor Networks Using NSRS Algorithm
December 22, 2012 12:00am PST
Wireless Sensor Network is an up-and-coming technology that shows great promise for various innovative applications both for public and military. Wireless Sensor Networks (WSNs) are Ad-hoc...
Provided by: International Journal of Computer Technology and Applications
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Whitepapers
Clustering Based Topology Control Protocol for Data Delivery in Wireless Sensor Networks
December 19, 2012 12:00am PST
The issue of optimizing the limited and often non-renewable energy of sensor nodes due to its direct impact on network lifetime dominates every aspect of wireless sensor networks. Existing...
Provided by: Cornell University
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Whitepapers
Underlay Cognitive Radios with Capacity Guarantees for Primary Users
December 18, 2012 12:00am PST
To use the spectrum efficiently, cognitive radios leverage knowledge of the Channel State Information (CSI) to optimize the performance of the Secondary Users (SUs) while limiting the interference...
Provided by: Cornell University
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Whitepapers
Symbiotic Cognitive Relaying with Mobile Secondary Nodes in Cognitive Radio Networks
December 18, 2012 12:00am PST
In a Symbiotic Cognitive Relaying (SCR) scenario, Secondary User (SU) nodes can act as multi-hop relays to assist communication between Primary User (PU) nodes in the case of a weak direct link....
Provided by: Indian Institute of Technology Bombay
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Whitepapers
RF Propagation Analysis of MICAz Mote's Antenna with Ground Effect
December 18, 2012 12:00am PST
In this paper, the authors analyzed the Radio Frequency (RF) propagation characteristics of monopole antenna in MICAz mote. During the experimental analysis, two scenarios are considered. In...
Provided by: Keio University
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Whitepapers
Cognitive Radio Resource Management Exploiting Heterogeneous Primary Users and a Radio Environment Map Database
December 18, 2012 12:00am PST
The efficient utilization of radio resources is a fundamental issue in Cognitive Radio (CR) networks. Thus, a novel cognitive Radio Resource Management (RRM) is proposed to improve the spectrum...
Provided by: SpringCM Inc
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Whitepapers
Optimal Pricing Effect on Equilibrium Behaviors of Delay-Sensitive Users in Cognitive Radio Networks
December 17, 2012 12:00am PST
This paper studies price-based spectrum access control in cognitive radio networks, which characterizes network operators' service provisions to delay-sensitive Secondary Users (SUs) via pricing...
Provided by: Institute of Electrical and Electronics Engineers
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Whitepapers
Data Delivery Scheme for Wireless Sensor Network Powered by RF Energy Harvesting
December 17, 2012 12:00am PST
Wireless Sensor Networks (WSNs) have traditionally been powered by portable energy sources, viz. batteries, which limit their operational lifetime. To ensure WSN sustainability, researchers have...
Provided by: Victoria University
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Whitepapers
A New Method for Sensing Cognitive Radio Network under Malicious Attacker
December 17, 2012 12:00am PST
Cognitive radio has been designed for solving the problem of spectrum scarcity by using the spectrum of primary users who don't use their spectrum on that time. For sensing the spectrum,...
Provided by: Scientific Research
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Whitepapers
Shooting and Bouncing Ray Approach for 4G Radio Network Planning
December 15, 2012 12:00am PST
Radio signal propagation prediction plays an essential role in planning of modern broadband mobile radio networks. While the less accurate statistical models predict only the path loss, the more...
Provided by: NORTH ATLANTIC UNIVERSITY UNION
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Whitepapers
Performance Analysis of Hybrid MAC Protocol for Cognitive Radio Networks
December 14, 2012 12:00am PST
The rapid growth in demand for broadband wireless services coupled with the recent developmental work on wireless communications technology and the static allocation of the spectrum have led to...
Provided by: Scientific Research
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Whitepapers
Traffic-Aware Techniques to Reduce 3G/LTE Wireless Energy Consumption
December 13, 2012 12:00am PST
The 3G/LTE wireless interface is a significant contributor to battery drain on mobile devices. A large portion of the energy is consumed by unnecessarily keeping the mobile device's radio in its...
Provided by: Association for Computing Machinery
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Whitepapers
Increasing Sum-Rate in Large-Scale Cognitive Radio Networks by Centralized Power and Spectrum Allocation
December 11, 2012 12:00am PST
The authors revisit the widely investigated problem of maximizing the centralized sum-rate capacity in a cognitive radio network. They consider an interference-limited multi-user multi-channel...
Provided by: EURASIP
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Whitepapers
Secondary Access to Spectrum with SINR Requirements Through Constraint Transformation
December 10, 2012 12:00am PST
In this paper, the authors investigate the problem of allocating spectrum among radio nodes under SINR requirements. This problem is of special interest in dynamic spectrum access networks where...
Provided by: University Games
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Whitepapers
Performance of Cooperative Spectrum Sensing for Different Number of CR Users in Cognitive Radio
December 9, 2012 12:00am PST
The authors have studied the performance of cooperative spectrum sensing for different number of CR users in cognitive radio over non-fading channel AWGN and fading channels such as Rayleigh and...
Provided by: International Journal of Science and Research (IJSR)
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Whitepapers
Development of User-Friendly GUI for Indoor Localization Using RFID Passive Tag
December 6, 2012 12:00am PST
Radio Frequency IDentification (RFID) is an automatic identification technology that enables tracking of people and object. In this paper, passive RFID tag is used for indoor localization. Passive...
Provided by: Institute of Research Engineers and Doctors
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Whitepapers
Ad Hoc Networks Technical Issues on Radio Links Security & QoS
December 6, 2012 12:00am PST
Mobile Ad hoc NETworks (MANETS) are self-created and self organized by a collection of mobile nodes, interconnected by multi-hop wireless paths in a strictly peer to peer fashion. Mobile Ad-hoc...
Provided by: International Journal of Science and Research (IJSR)
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Whitepapers
Q&A: Use Mobile Marketing to Boost Sales
December 4, 2012 12:00am PST
Alice Bredin is an internationally renowned small business expert. She is founder and president of Bredin Inc., a marketing consultancy that helps Fortune 500 firms develop profitable, long-term...
Provided by: AT&T
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Whitepapers
Computing Capacity and Connectivity in Cognitive Radio Ad-Hoc Networks
December 3, 2012 12:00am PST
The authors present some unique challenges in Cognitive Radio Ad-Hoc Networks (CRAHNs) that are not present in conventional single-channel or multi-channel wireless ad-hoc networks. They first...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Resource Management Schemes for QoS in Hybrid Wireless Networks
December 1, 2012 12:00am PST
The Hybrid Wireless Network (HWN) such as WLAN, Cellular, ad hoc networks is not only used for transferring voice but also to support data, video and multimedia. In addition, the key issues...
Provided by: International Journal of Computer Applications
