The use of cognitive radio techniques in wireless mobile networks can lead to significant capacity increase. Cognitive radios sense the radio spectrum environment and to switch dynamically to available frequency ranges. a framework for applying cognitive radio technology to mobile WiMAX is described in this article. In this framework , the base stations are
equipped with sensitive detectors which dynamically assign channels to
subscriber station depending upon the on spectrum availability. The frequency reuse is increased by Power control. ....etc

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i want a seminar report on cognitive radio........... ....etc

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A cognitive architecture is a blueprint for intelligent agents. It proposes (artificial) computational processes that act like certain cognitive systems, most often, like a person, or acts intelligent under some definition. It is a superset of general agent architectures. The term architecture implies an approach that attempts to model not only behavior, but also structural properties of the modelled system.
Characterization
Common to cognitive architecture is the belief that understanding (human) cognitive processing means being able to impl ....etc

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Abstract
There are new system implementation challenges involved in the design of cognitive radios, which have both the ability to sense the spectral environment and the flexibility to adapt transmission parameters to maximize system capacity while co-existing with legacy wireless networks. The critical design problem is the need to process multi-gigahertz wide bandwidth and reliably detect presence of primary users. This places severe requirements on sensitivity, linearity, and dynamic range of the circuitry in the RF front-e ....etc

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Title: cognitive radio systems

Abstract

Efficient use of radio spectrum is a necessity for future wireless systems. While the vast majority of the frequency spectrum is licensed to different organizations, observations provide evidence that usage of the licensed spectrum is by far not complete

neither in the time domain nor the spatial domain. This material discusses basics of Cognitive radio (CR), classifications of

cognitive radio systems, cognitive system architecture, antenna design for cognitive radio system.

1. Introduction ....etc

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i want full seminar report on cognitive radio.is it right topic for semiar? ....etc

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Cognitive Issues in Head-Up Displays

This article is presented by:

Edith Fischer
San Jose State University Foundation
San Jose, California
Richard F. Haines
Ames Research Center
Moffett Field, California
Toni A. Price
San Jose State University Foundation
San Jose, California

To execute a successful CAT II approach and landing, the pilot uses both instrument information and visual cues from the outside scene. In the conventional cockpit these two sets of information ....etc

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Cognitive architecture


A cognitive architecture is a blueprint for intelligent agents. It proposes (artificial) computational processes that act like certain cognitive systems, most often, like a person, or acts intelligent under some definition. It is a superset of general agent architectures. The term architecture implies an approach that attempts to model not only behavior, but also structural properties of the modelled system.
Characterization
Common to cognitive architecture is the belief that understanding (human) cognitive process ....etc

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Grouping Technique for Cooperative Spectrum Sensing in Cognitive Radios




Rizwan Akhtar, Adnan Rashdi and Abdul Ghafoor
Electrical Engineering Department, College of Signals, National University of Science & Technology, Pakistan


Abstract—

Cognitive networks can potentially solve the
problems of spectrum scarcity by accommodating unlicensed
(secondary) users in under-utilized segments of the spectrum.
Spectrum sensing serves as the primary stimulus for a cognitive
radio an ....etc

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DELIRIUM, DEMENTIA, AND AMNESTIC and OTHER COGNITIVE DISORDERS
 Dementia Definition
 Multiple Cognitive Deficits:
 Memory dysfunction
 especially new learning, a prominent early symptom
 At least one additional cognitive deficit
 aphasia, apraxia, agnosia, or executive dysfunction
 Cognitive Disturbances:
 Sufficiently severe to cause impairment of occupational or social functioning and
 Must represent a decline from a previous level of functioning
 Differential Diagnos ....etc

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