Dissertation > Excellent graduate degree dissertation topics show

The Research of DOA Estimation Algorithm in Smart Antenna

Author: JiangZuo
Tutor: LiuLianHui
School: Xi'an University of Science and Technology
Course: Communication and Information System
Keywords: Smart antenna Direction of Arrival Estimation Eigenvalue decomposition
CLC: TN821
Type: Master's thesis
Year: 2005
Downloads: 345
Quote: 2
Read: Download Dissertation

Abstract


Smart antenna technology is one of the key technologies of the third generation mobile communication system , but also at home and abroad hot research topic . Wireless mobile communication channel transmission environment complexity and uncertainty , there is multipath fading and delay spread , thus causing the inter-symbol interference ( ISI ) , co-channel interference ( CCI ) , multiple access interference ( MAI ) these reduce the interference link performance and system capacity , smart antenna technology is one of the methods of solving the above problems . In this paper, the development status of the array antenna technology , the basic working principles , features and advantages . Discuss four types of DOA estimation based on the idea of ??the algorithm , as well as several classic algorithms , analyze their advantages and disadvantages . The main work of this paper is based on subspace estimation algorithm by means of rotation invariant parameter estimation algorithm and two-dimensional virtual ESPRIT algorithm as the research object . To encounter the problem of complex operations in the ESPRIT algorithm , by studying the normalized ESPRIT algorithm , can be complex complex operation into a simple real operations , thereby enhancing the effectiveness of the algorithm . In addition, the two - dimensional virtual ESPRIT algorithm requires three eigenvalue decomposition , large amount of calculation . The space - time matrix method without the need for spectral peak searching , thus reducing the amount of computation . This paper presents a virtual DOA matrix algorithm, which has a small amount of computation , the subarray low estimated effect under conditions of low signal-to-noise ratio is low . The same time , in order to improve the utilization of the antenna array elements multiplexing method , further improvements in the virtual DOA matrix method , simulation results show the effectiveness of the method .

Related Dissertations

  1. Research on Smart Antenna Technology Application in WiMAX System,TN821.91
  2. Based on the 802.11n link performance directional antenna research,TN925.93
  3. Key Techniques of TD-SCDMA Implement in RNP Tool,TN929.533
  4. Research on Directon Finding Techniques Based on MUSIC Algorithm,TN974
  5. Study on Spatial Spectrum Estimation Technology of Coherent Signals Based on Fractional Fourier Transform,TN911.7
  6. Research and Implementation of Link Budget in TD-LTE Dynamic System-Level Simulation,TN929.5
  7. Research of Adaptive Beamforming and Hardware System Technique,TN821.91
  8. The broadband DOA Estimation Algorithm,TN911.23
  9. Research on Direction of Arrival Estimation Algorithm in Smart Antenna,TN821.91
  10. Principle and Practice Research of the Joint Receiver,TN929.533
  11. Smart Antenna Technology and the Study of DOS Estimation,TN821.91
  12. Study of Channel Parameters Estimation and Space-Time Multiuser Detection,TN929.53
  13. Smart antenna beamforming technology research,TN826
  14. Smart Antenna System Simulation,TN821.91
  15. High Resolution DOA Estimation Algorithm and Its Implementation of Array,TN911.7
  16. Research and Design on RF Circuits in Smart Antenna System,TN821.91
  17. Digital Beamforming Arithmetic and Hardware Implementation of Smart Antenna,TN821.91
  18. Research on the Robust DOA Estimation Algorithms of Coherent Signals,TN911.23
  19. Naval communications smart antenna system,TN821.91
  20. Smart Antenna Adaptive Beamforming Algorithm Research and Design,TN821.91
  21. TD-SCDMA system DOA algorithms and uplink test,TN929.533

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Antenna > Antenna: work principle
© 2012 www.DissertationTopic.Net  Mobile