Dissertation > Excellent graduate degree dissertation topics show

Blind Channel Estimation and Equalization Based on ICA in MIMO-OFDM System

Author: JiangCheng
Tutor: ZhaoXiaoZuo
School: Jilin University
Course: Signal and Information Processing
Keywords: Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing Subspace blind channel estimation Space-time equalizer Independent variable analysis
CLC: TN919.3
Type: Master's thesis
Year: 2009
Downloads: 182
Quote: 2
Read: Download Dissertation

Abstract


MIMO (Multiple-Input Multiple-Output, MIMO) system in the case of need to increase the spectrum resource and the antenna transmission power can be doubled to improve the channel capacity . Orthogonal Frequency Division Multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) technique can be effective against the frequency selective multipath fading . The combination of the MIMO-OFDM system will be very promising high data rate transmission scheme . Wireless propagation environment , both sub-channel interference ICI and multi - access interference MAI, need to be balanced and balanced space . The MIMO-OFDM system , blind channel estimation and equalization purposes is not using the training sequence , the estimated channel information , and to eliminate the ICI and the MAI in the signal transmission process , to restore the user data . In this paper, based on second-order statistics subspace blind channel estimation algorithm , the same column space and the use of the received signal vector channel transmission matrix column space of this nature , by calculating the received signal vector self- Related obtain the noise subspace , then construct channel parameter as a variable equation of secondary consideration to minimize this cost equation with space fuzzy factor channel parameters . The MMSE equalizer then based on the results of the estimated completion time equalizer , and put forward an improved low-dimensional equalization scheme . Balanced results based on the time remaining space law ICA eliminates time equalizer fuzzy factor , complete spatial equilibrium , restore user data analysis based on higher-order statistics of independent variables , statistically independent source and non - Gaussian conditions . Simulation results show that ICA assisted MMSE equalizer shows a good performance .

Related Dissertations

  1. Study on Implementation Technology of Channel Estimation in OFDM System Based on DSP,TN919.3
  2. Research on PAPR Reduction Algorithm in SFBC MIMO-OFDM System,TN919.3
  3. Research on the Reduction of Peak to Average Power Ratio in SLM OFDM Systems,TN919.3
  4. A Study of PAPR Reducing in the OFDM Underwater Acoustic Communication Systems,TN919.3
  5. Research on the Peak to Average Power Ratio Reduction for OFDM System by BFGS,TN919.3
  6. Research on Pilot-based Channel Estimation in OFDM System,TN919.3
  7. Research on Synchronization Technology of Orthogonal Frequency Division Multiplexing System,TN919.3
  8. Research on Precoding for MIMO System,TN919.72
  9. Study on the High-Speed Mobile Channel Estimation,TN919.3
  10. Research on Synchronization and Channel Estimation in OFDM Systems,TN919.3
  11. The Theoretical and Experimental Research on MIMO Detection for Small Target in Waveguide,TB566
  12. Study Theapplication of Polar Codes in OFDM Systems of Image Transmission,TN919.3
  13. Research and Implementation of Downlink Simulation Platform Based on the LTE Protocol,TN929.5
  14. The Study of Channel Equlization at High-speed Mobile Environment,TN911.5
  15. Research and Implementation of Adaptive Modulation and Coding Algorithm Based on OFDM Baseband,TN911.22
  16. The Design and Simulation of High-speed Underwater Acoustic Communication Systems,TN929.3
  17. Research on Dynamic Resources Allocation of Multi-user CR-OFDM System,TN919.3
  18. A Research on Channel Estimation Based on Compressed Sensing for Broadband Wireless Communications,TN92
  19. The Research of Virtual Multiple-input Multiple-output for the Uplink of LTE System,TN929.5
  20. Research on Key Technologies of Physical Layer in 4G System,TN919.3
  21. Research on Spectrum Sensing Technologies in Cognitive Radio,TN925

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Data communication > Data transmission technology
© 2012 www.DissertationTopic.Net  Mobile