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spectrum
(4657 results)-
Whitepapers
CellTV - on the Benefit of TV Distribution Over Cellular Networks: A Case Study
March 20, 2013 12:00am PDT
As mobile IP-access is becoming the dominant technology for providing wireless services, the demand for more spectrum for this type of access is increasing rapidly. Since IP-access can be used for...
Provided by: Cornell University
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Whitepapers
The Public Safety Broadband Network: A Novel Architecture with Mobile Base Stations
March 18, 2013 12:00am PDT
A nationwide interoperable public safety broadband network is being planned by the United States government. The network will be based on Long Term Evolution (LTE) standards and use recently...
Provided by: Northwestern University
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Whitepapers
Malicious User Detection in Cooperative Environment in Cognitive Radio Networks
March 10, 2013 12:00am PST
Cognitive radio efficiently utilizes the unused spectrum for secondary usage without interfering a primary licensed user. In cooperative environment, a primary licensed user can share spectrum...
Provided by: International Journal of Science and Research (IJSR)
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Whitepapers
Design and Analysis of a Compact Ultra Wide Band Coaxial Probe Feed Microstrip Patch Antenna
March 6, 2013 12:00am PST
Microstrip antennas are increasingly finding applications in microwave communication system as they are light weight, have planar configuration and inexpensive to fabricate. For many years,...
Provided by: International Journal of Computer Applications
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Whitepapers
CogWnet: A Resource Management Architecture for Cognitive Wireless Networks
March 3, 2013 12:00am PST
With the increasing adoption of wireless communication technologies, there is a need to improve management of existing radio resources. Cognitive radio is a promising technology to improve the...
Provided by: University of Miami School of Business Administration
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Whitepapers
Spectrum Sensing and Security in Cognitive Radio
March 1, 2013 12:00am PST
This paper analysis performance of energy detection technique for cognitive radio which implies spectrum sensing. Main objective is to reduce interference occur in the cognitive radio systems....
Provided by: International Journal of Computer Applications
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Whitepapers
Security Frameworks Design and Implementation for Dynamic Management of Data and Information in Cognitive Radio Networks
March 1, 2013 12:00am PST
Cognitive radio network is a new innovation wireless technology aiming to improve the utilization of the electromagnetic spectrum. Cognitive radio network consists of several cognitive radio...
Provided by: North Western University
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Whitepapers
Spectrum Sensing for OFDM Signals Using Pilot Induced Auto-Correlations
March 1, 2013 12:00am PST
Orthogonal Frequency Division Multiplex (OFDM) has been widely used in various wireless communications systems. Thus the detection of OFDM signals is of significant importance in cognitive radio...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Simulation of Cognitive Radio System Applying Different Wireless Channel Models
March 1, 2013 12:00am PST
Cognitive radio is an emerging technology, which aims to upgrade the spectrum utilization by allowing the secondary users to operate at the spectrum bands vacated by the primary users. A cognitive...
Provided by: Menoufia University
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Whitepapers
Analysis of Data Rate Trade Off of UWB Communication Systems
March 1, 2013 12:00am PST
As UWB system transmit low power stream of short pulses in large spectrum, their energy is spread over a large amount of spectrum .This signal can penetrate in noisy radio environment and provide...
Provided by: International Journal of Advances in Engineering & Technology (IJAET)
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Whitepapers
Cost Analysis of Handover Manager Based Handover Method in Leo Satellite Networks
March 1, 2013 12:00am PST
LEO satellite has an important role in global communication system. They have advantages like low power requirement and lower end-to-end delay, efficient frequency spectrum utilization between...
Provided by: International Journal of Advances in Engineering & Technology (IJAET)
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Whitepapers
Minimization of Mobility Management Cost in Leo Satellite Using Translation of Coordinates
March 1, 2013 12:00am PST
Though Low Earth Orbit (LEO) satellites have some distinct characteristics such as low propagation delay, low power requirements and more efficient spectrum allocation due to frequency reuse...
Provided by: International Journal of Advances in Engineering & Technology (IJAET)
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Whitepapers
A Predator-Prey Model for Dynamics of Cognitive Radios
March 1, 2013 12:00am PST
Cognitive radio technology is well-known to enhance spectrum utilization via opportunistic transmission at link level. However, the time dynamics of spectrum utilization among primary system users...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Effective Performance Evaluation of On-Demand Routing Protocol for Cognitive Radio Ad Hoc Network
March 1, 2013 12:00am PST
To solve spectrum decision and route selection problem which have vital role in Cognitive Radio Ad Hoc Network (CRAHN), many researchers developed different methodology how efficiently select the...
Provided by: ACCENTS
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Whitepapers
Cognitive Radio Network Duality and Algorithms for Utility Maximization
March 1, 2013 12:00am PST
The authors study a utility maximization framework for spectrum sharing among cognitive secondary users and licensed primary users in cognitive radio networks. All the users maximize the network...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Development of a Mathematical Framework for Comparison of Underlay and Overlay Systems
February 26, 2013 12:00am PST
Overlay and underlay are two main spectrum access strategies in cognitive radio. In this paper, the authors have driven closed form expressions for the primary service outage probabilities of both...
Provided by: International Journal of Electronics Communication and Computer Engineering
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Whitepapers
Opportunistic Wireless Energy Harvesting in Cognitive Radio Networks
February 20, 2013 12:00am PST
Wireless networks can be self-sustaining by harvesting energy from ambient Radio-Frequency (RF) signals. Recently, researchers have made progress on designing efficient circuits and devices for RF...
Provided by: National University of Singapore
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Whitepapers
Analysis and Design of Low-Power Transceiver With Zigbee Sensor Unit
February 20, 2013 12:00am PST
Power consumption of nodes in a Wireless Sensor Network (WSN) determines the life cycle of the WSN, so it is particularly important to design low-power and high-performance Wireless Sensor Nodes...
Provided by: Journal of Theoretical and Applied Information Technology
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Whitepapers
Low Delay MAC Scheduling for Frequency-Agile Multi-Radio Wireless Networks
February 17, 2013 12:00am PST
Recent trends suggest that cognitive radio based wireless networks will be frequency agile and the nodes will be equipped with multiple radios capable of tuning across large swaths of spectrum....
Provided by: University of Texas at Arlington
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Whitepapers
Detection of Reactive Jamming in DSSS-Based Wireless Networks
February 15, 2013 12:00am PST
The authors propose a novel approach to detect reactive jammers in Direct Sequence Spread Spectrum (DSSS) wireless networks. The key idea is to use the chip error rate of the first few...
Provided by: Association for Computing Machinery
