Dissertation > Excellent graduate degree dissertation topics show

The Study of Cognitive Spectrum Technology in Cognitive Radio

Author: ZhuJingZuo
Tutor: KuoYongHong；YangMing
School: Xi'an University of Electronic Science and Technology
Course: Electronics and Communication Engineering
Keywords: Cognitive radio Energy detection Cyclostationary feature detection Evidence Theory
CLC: TN925
Type: Master's thesis
Year: 2011
Downloads: 73
Quote: 0
Read: Download Dissertation

Abstract


Cognitive radio is an intelligent wireless communication technology can change its transmitter parameters interact with the operating environment , in particular, allows unauthorized users without interfering with the premise of authorized users to maximize the share of the allocated spectrum , which improve the utilization of radio spectrum . The primary task of the cognitive radio spectrum environment , it embodies the most significant cognitive characteristics . Introduction to basic theories of cognitive radio based on idle spectrum detection of several options through simulation comparison analysis and to study the spectrum of cognitive cooperative algorithm based on evidence theory . This paper first reviews the basic principles of cognitive radio , including its definition of the main functions and key technologies . Spectrum cognitive techniques , given the empty spectrum and interference temperature concept of how to find the appropriate idle spectrum and the spectrum of cognitive technology summarized as two major aspects of transmitter detection and cooperative detection . Second, cognitive techniques for cognitive radio transmitter detection , a detailed analysis of the the three spectrum detection method : matched filter method , energy detection and cyclostationary feature detection method and other existing detection the program was brief . Then using MATLAB AM signal detection scheme specific modeling and simulation , and confirmed by analysis of the energy detection method can effectively save time, static cycle characteristics detection rule can identify different classes of modulation in the case of low SNR The signal and noise . On the basis of analysis of the various methods , proposed spectrum cognitive improvement methods . Not consider the problem of a single node detects credibility in information fusion for existing cooperative spectrum cognitive algorithm , the paper focuses on cooperative spectrum cognitive algorithm based on evidence theory . In this paper, two spectrum cognitive algorithm simulation , probability of detection , false alarm probability aspects verify its detection performance compared with the original algorithm greatly improved . Finally elaborated cognitive radio applications , and work full text Summary and Outlook .

Related Dissertations

  1. The Simulation and Analysis of Spectrum Sensing Based on Higher Order Cumulants,TN911.23
  2. Research on Joint Target Detection for Dual-Sensor Image and System Implementation,TP391.41
  3. Research on Sidelobe Suppression for NC-OFDM Systems,TN919.3
  4. Study and Design on Compact Wideband and Narrowband Combined Antennas for Spectrum Sensing Applications,TN822
  5. Research on Power Control for Cooperative Communications Based on Cognitive Radio System,TN925
  6. The Power Control Algorithm Based on Noncooperative Game in Cognitive Radio,TN925
  7. Research on Spectrum Allocation Technology of Cognitive Radio,TN925
  8. The Study of Spectrum Sharing in Cognitive Radio Based on Game Theory,TN925
  9. Research on Limited Feedback in Cognitive Radio Networks,TN925
  10. The user scheduling MIMO cognitive and physical layer security technology research,TN925
  11. Dynamic scheduling for steelmaking disturbance recognition and classification method,F426.31
  12. Machine Learning Based Spectrum Sensing in Cognitive Radio,TN925
  13. Routing Optimizations in Cognitive Radio Networks,TN925
  14. A Study on Energy Detection of IR-UWB Receiver,TN925
  15. Entropy-Based Spectrum Sensing in Cognitive Radio,TN925
  16. A Study on Algorithms of Channel Estimation for NC-OFDM Based on Pilot Signal,TN919.3
  17. Research on Routing Algorithms in Cognitive Wireless Mesh Networks,TN929.5
  18. Performance analysis of cooperative spectrum sensing in cognitive radio,TN925
  19. Cooperative spectrum sensing in cognitive radio,TN925
  20. Cognitive radio cooperative spectrum sensing technology,TN925
  21. Research on Spectrum Detection Algorithm of Cognitive Radio System,TN925

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Radio relay communications,microwave communications
© 2012 www.DissertationTopic.Net  Mobile