Dissertation > Excellent graduate degree dissertation topics show

Research on Key Technology of Indoor MIMO System

Author: XingWang
Tutor: ZengZhaoHua
School: Xi'an University of Science and Technology
Course: Communication and Information System
Keywords: Multiple Input Multiple Output Space-related Rice channel Vertical layered space-time code Detection algorithm
CLC: TN919.3
Type: Master's thesis
Year: 2011
Downloads: 61
Quote: 0
Read: Download Dissertation

Abstract


This paper studies the MIMO system channel between the spatial correlation of the channel capacity of the impact analysis of the antenna spacing and angle expansion parameters and spatial correlation relationship between the size , and these conclusions for MIMO technology in indoor environments better application of guiding significance . This also relates to the MIMO system receiver detection algorithm performance simulation analysis , in order to further raise efficiency and low complexity detection algorithms provide a theoretical basis . Firstly, based on the correlation matrix of a MIMO channel established spatial correlation model which takes into account two spaces in the main channel parameter , a is the angle described by the power spectrum of the angular spread , and the other is the antenna spacing. From the simulation results can be obtained in the Rayleigh fading channels , the correlation coefficient between the antenna and the antenna spacing, angle of arrival wave expansion has a direct correlation , in general, the greater the distance between the antenna , wave angular spread wider, then the smaller the correlation coefficient , the greater the correlation coefficient and vice versa , and the larger spatial correlation may cause a loss of channel capacity . Secondly, the paper discusses a small-scale fading indoor MIMO channel model : direct path and scattering path of coexistence Rice fading channel , the simulation performance of the model forecasts , analyzes direct component , scattering component , and Rice factors on the impact of channel capacity , come in direct low rank matrix channel , with the Rice factor value increases , MIMO channel capacity of the system decreases. Finally, the most representative of the MIMO system vertical layered space-time coding system was introduced, and simulation analysis of the system several detection algorithm performance . Assuming ideal channel estimation , the maximum likelihood algorithm derived optimal detection performance , but its computational complexity is relatively high , it is difficult to apply in practice ; based on zero-forcing , MMSE criterion complexity of the algorithm is relatively low, but their detection performance is poor ; while thinking based on the serial interference cancellation zero-forcing , MMSE algorithm performance and complexity are more moderate, and when the number of transmit and receive antennas are 4:00 , the performance of these two algorithms are better than the number of receive antennas is 2 .

Related Dissertations

  1. Moving target trajectory analysis based Intelligent Traffic Monitoring System,TP277
  2. Study on Freeway Automatic Incident Detection Algorithm Based on Information Fusion,U491
  3. Researches on Carrier Synchronization with Diversity in MIMO-OFDM Systems,TN919.3
  4. A Study of Signal Detection Algorithm in MIMO Systems,TN919.3
  5. SDR algorithm based on semi- definite relaxation for MIMO Detection Technology,TN919.3
  6. WIMAX base stations based on multi- input, multiple output channel control module design and implementation,TN929.5
  7. Multi-cell interference on the downlink MIMO communication system modeling and collaborative scheduling,TN929.5
  8. Research on Hybrid Active Power Filter in Low Voltage System,TN713.8
  9. The Research of Virtual Multiple-input Multiple-output for the Uplink of LTE System,TN929.5
  10. A Research on Channel Estimation Based on Compressed Sensing for Broadband Wireless Communications,TN92
  11. Research and Implementation of Downlink Simulation Platform Based on the LTE Protocol,TN929.5
  12. The Theoretical and Experimental Research on MIMO Detection for Small Target in Waveguide,TB566
  13. Study on the High-Speed Mobile Channel Estimation,TN919.3
  14. Research on Precoding for MIMO System,TN919.72
  15. Research on PAPR Reduction Algorithm in SFBC MIMO-OFDM System,TN919.3
  16. Optimized Strategy of RED Algorithm Based on NS-2,TP393.06
  17. Simulation of Data Transmission in Physical Layer with Different Channel Models,TN919.3
  18. Research of Intruding Detection Based on DCA and NSA Algorithm,TP393.08
  19. Study of LTE Uplink MIMO Detection Algorithms,TN929.5
  20. Virtual Gear Measurement Center Touch Detection,TP274

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