Presentation On Cooperative Spectrum Sensing in Cognitive Radio Networks

PPT On Cooperative Spectrum Sensing in Cognitive Radio Networks
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Cooperative Spectrum Sensing in Cognitive Radio Networks Presentation Transcript:
1.A study analysis of Cooperative spectrum sensing in Cognitive Radio Networks

2.Outline of Presentation
Motivation
Objectives
Introduction
Functions
Spectrum Sensing Techniques
Cooperative Spectrum Sensing
Cluster Based
Simulation Results
Conclusion
Future Work
References

3.Motivation
Recent measurement by the FCC in the US show 70% of the allocated spectrum is not utilized

4.Objectives
To Maximize Probability of Detection
To Minimize the probability of False alarm
To Minimize sensing time
To Maximize throughput

5.Spectrum Holes

6.Cognitive Radio
“A cognitive radio (CR) is a radio that can change its operating parameters dynamically based on interaction with the environment in which it operates”.
They are designed to provide highly reliable communication for all the users of the network, wherever and whenever needed.

7.Maximizes throughput
Mitigates interference
Facilitates interoperability
Access secondary markets

8.Cognitive radio cycle
Cognitive Cycle
Spectrum sensing
Spectrum analysis
Spectrum decision

9.Design Issues
Spectrum sensing
Spectrum management
Spectrum sharing
Spectrum mobility

10.Spectrum Sensing Techniques
The most efficient way of spectrum sensing techniques are divided into :
Local Spectrum Sensing
Energy detection
Matched Filter detection
Cyclostationary detection
Cooperative  Spectrum Sensing  
Distributive Cooperative detection
Centralized  Cooperative  detection
External Cooperative detection