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 am going to take a seminar on cognitive radio,so i need to know more about this topic also i want a seminar report on this topic. ....etc

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Abstract
Cognitive radio (CR) is a newly emerging technology, which has been recently proposed to implement some kind of intelligence to allow a radio terminal to automatically sense, recognize, and make wise use of any available radio frequency spectrum at a given time. The use of the available frequency spectrum is purely on an opportunity driven basis.

Description of Cognitive Radio

In other words, it can utilize any idle spectrum sector for the exchange of information and stop using it the instant the primary user of the spectrum sector n ....etc

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to get information about the topic Software advances in wireless communication related topic refer the page link bellow

http://seminarsprojects.net/Thread-wireline-quality-underwater-wireless-communication-using-high-speed-acoustic-modems ....etc

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Hi dear, I need your help to simulate cognitive radio on opnet regarding the spectrum sensing. If you have any simulation scenarios done just to let me know how the cognitive radio and spectrum sensing work
[email protected] ....etc

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Introduction

With Cognitive Radio being used in a number of applications, the area of spectrum sensing has become increasingly important. As Cognitive Radio technology is being used to provide a method of using the spectrum more efficiently, spectrum sensing is key to this application.

The ability of Cognitive Radio systems to access spare sections of the radio spectrum, and to keep monitoring the spectrum to ensure that the Cognitive Radio system does not cause any undue interference relies totally on the spectrum sensing elements of the sys ....etc

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I need a mat lab code corresponding the spectrum access channel from primary user to secondary user to demonstrate that code to UG students please send the code for that ....etc

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To get full information or details of opnet simulator tutorial in cognitive radio please have a look on the pages

http://faculty.uml.edu/Tricia_Chigan/Research/CRCN_Simulator.htm

http://cme.ee.ntu.edu.sg/AboutUs/RCLab/Pages/opnet_projects.aspx

if you again feel trouble on opnet simulator tutorial in cognitive radio please reply in that page and ask specific fields in opnet simulator tutorial in cognitive radio ....etc

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please help on the given subject title.. i will b thankful to u. ....etc

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hi,
you can find your report in this thread:
http://seminarsprojects.net/Thread-cognitive-radio-systems

This is a good topic for yor seminars. Everything depends on how much details you collect and how well you present it.
Good luck! ....etc

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