Dissertation > Excellent graduate degree dissertation topics show

Study of Synchronization Technology for OFDM Systems

Author: ZhiYuLiang
Tutor: WangAnGuo
School: Tianjin University
Course: Electromagnetic Field and Microwave Technology
Keywords: OFDM Time Synchronization Frequency synchronization PN Sequence CHU
CLC: TN919.3
Type: Master's thesis
Year: 2010
Downloads: 78
Quote: 0
Read: Download Dissertation

Abstract


Orthogonal frequency division multiplexing (OFDM) is a multi-carrier modulation technique , and it has a good resistance to multipath interference , and efficiency of spectrum utilization , has been widely used in various fields , and will become the next generation of mobile communication system 4G core technology . However, since the OFDM technology itself orthogonal multi-carrier modulation characteristics , is very sensitive to the error of synchronization . The ability to accurately synchronize directly related to the overall performance of the system . Therefore , the precise time synchronization and frequency synchronization has become a key link of the OFDM system , and become the hot spot of the current domestic and international research . Conducted extensive studies based on the training symbol synchronization algorithm , including the PN sequence based on the synchronization algorithm based CHU sequence synchronization algorithm . Synchronization algorithm based on PN sequence , the phenomenon of \the program eliminates the timing function curve \CHU sequence - based synchronization algorithm for the traditional cross-correlation timing synchronization algorithm vulnerable to frequency offset , the training symbol structure and function of timing metric in traditional synchronization scheme based on the optimization of the design and theoretical analysis method validation , the optimized synchronous design can overcome frequency offset , to obtain accurate timing . Finally, in the Gaussian channel and multipath fading channel environment , respectively, for more than two improved synchronization algorithm computer simulation results show that both improved synchronization algorithm can effectively improve the timing performance of the system .

Related Dissertations

  1. Synchronization and Channel Estimation Algorithm in Bursted OFDM System and Its Implementation on FPGA,TN919.3
  2. Research on Spread Spectrum Code Acquisition of Double Threshold Based on Sliding Correlator,TN914.42
  3. Analysis of Multiple Access Interference in Asynchronous Direct Sequence Spread Spectrum Communication System Using Gold Sequence,TN914.53
  4. Research on the Doppler Wireless Location Techniques Based on DSSS,TN914.42
  5. Research and Hardware Simulation of Multiuser Spread Spectrum Code Acquisition Based on FPGA,TN914.42
  6. Research and Application of Digital Assembly Process Planning System for Rocket Engine,TP391.7
  7. Research on the Constructions of Several Classes of Sequence Based on Interleaving Techniques,TN911
  8. The Research on Reliability of Low-Voltage Power Line Communication,TM73
  9. Survey in Nanjing and Analysis of the Mitochondrial Genome of Frankliniella Occidentalis (Pergande),S433
  10. Study on the Breeding of High Efficient Detoxification Strains and Suggestion Parameters of Solid Fermentation on Cottonseed Meal,S816.6
  11. Cloning, Expression and Polymorphism Analysis of BMP4 Gene in Hu Sheep,S826
  12. Gene Prediction and Sequence Analysis of Insect OBP CSP and sid-1,Q78
  13. Isolation and Identification of Low Pathogenicity Avian Influenza (H9) Virus in Henan and Study on the Biological Charactistics,S852.65
  14. Genetic Variation Analysis of Porcine Reproductive and Respiratory Syndrome and Eukaryotic Expression of Pig Interferon α,S858.28
  15. Construction and Ests Analysis of the Subtraction Cdna Library for Larvae of Lutjanus Sanguineus Induced by Vibrio Alginolyticus,S943
  16. Isolation and Identification of Infectious Bronchitis Virus and Sequence Analysis of Its S1 Gene and N Gene,S852.65
  17. Research on Predicting Intrinsic Disorder Protein Structure Based on Supervision Manifold Learning Algorithm,Q51
  18. Pathogenic Mechanism of Invasion Associated Genes in Avian Pathogenic E. Coli Duck Isolate DE205B,S852.61
  19. Cloning 1Dx5 Gene from the Xinjiang Wheat Variety and Constructing Its Expression Vector,S512.1
  20. Mitochondrial Genome Sequence Analysis of a Brassica Juncea Landrace,S565.4
  21. The Molecular Systematics and Classification of Triticeae Polyploids with St Genome,S512.1

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