Dissertation > Excellent graduate degree dissertation topics show

Research and Design of Electronic Equalization Based on Most Likelihood Sequence Estimation

Author: JuPeiJian
Tutor: LeiZuoMing
School: Huazhong University of Science and Technology
Course: Software Engineering
Keywords: Electronic dispersion compensation Digital Signal Processing Balanced Maximum likelihood sequence estimation Channel estimation Fast Fourier Transform Viterbi algorithm
CLC: TN911.5
Type: Master's thesis
Year: 2011
Downloads: 25
Quote: 0
Read: Download Dissertation

Abstract


Optical fiber communication systems because of its large capacity, a high rate of advantages has gradually become the most important part of the information transmission network . With the increase in the transmission speed , the low speed is not very serious dispersion problem is gradually revealed. Of 10Gb / s optical fiber and the device has been widely used , the full replacement of 40Gb / s or higher rates of fiber and the device is not economical. In order to improve equipment utilization , balancing technology gradually attracted people's attention . With respect to the optical signal equalizer , based on the electric field of the signal processing of the electrical domain equalization method is more economical easily achieved, but also a relatively high degree of automation . And balanced mainstream algorithm of the digital electric signal in the electrical domain equalization processing methods - the maximum likelihood sequence estimation, has been considered theoretically best balanced manner . Maximum likelihood sequence estimation the equalization method consists of two main modules : channel estimation module and Viterbi equalization module . Channel estimated module aims to channel to establish the mathematical model and simulation of digital signal on channel distortion process ; Witte than balancing module according to the channel estimated module to establish the mathematical model , the maximum likelihood estimate of the distortion sequence with the Viterbi algorithm restore the greatest degree of distortion data . This paper studies two different channel modeling model - probability model and finite impulse response filter model . Probability model, we use non-parametric modeling methods , modeling of different rate Fibre Channel ; finite impulse response filter model , this paper presents a channel estimation method based on a simplified fast Fourier transform . Secondly, this study achieved a conversion of the Viterbi algorithm , and two above channel estimation algorithm The Viterbi algorithm structures together to form two maximum likelihood sequence estimation equalizer . Through different simulation software to build an integrated simulation system to simulate these two equalizers and comparative analysis . Comprehensive simulation channel fast Fourier transform In this paper, based on a simplified the estimated equalizer outperforms the probabilistic model algorithm improved by an order of magnitude , and the computation time .

Related Dissertations

  1. On Research about Yunnan Ordinary Higher Education Region Balanced Development,G649.2
  2. Synchronization and Channel Estimation Algorithm in Bursted OFDM System and Its Implementation on FPGA,TN919.3
  3. Study on Implementation Technology of Channel Estimation in OFDM System Based on DSP,TN919.3
  4. The Technology Research on Channel Coding and Channel Estimation in MC-CDMA Systems,TN929.533
  5. Design and Implementation of Processor TI DSP VC33 Virtual Kernel,TP332
  6. Effects of Low-protein Diet on Production Performance and Feeding Environment of Piglet,S828.5
  7. Construction of G Bank Yunnan Branch Office of Performance Management System,F272.92
  8. Performance Evaluation of University Academic Team Based on Balanced Scorecard,G647
  9. The Balanced Scorecard China’s Public Department Performance Management Application,F272
  10. Xi'an Lianhu District Compulsory sharing of resources exploration,G522.3
  11. Educational equalization,G522.3
  12. Garment Co., Ltd. Anshan SF Marketing Strategy,F426.86
  13. Cao Mine Ventilation Optimization of multi-regional,TD724
  14. Guide heliocentric orbit simulation Research and Improvement,O53
  15. Research on How to Regularly Develop Basic Education of Gansu Provinc,G527
  16. A Study on the Balanced Supplying of Social Medical Insurance between Urban Floating Population and Residence of the Inflowing Area of China,F842.6
  17. Application of AWG in Decoy Protection Equipment,TN97
  18. Study on the Problems and Countermeasures of Balanced Development of Compulsory Education Between Rural and County Area,G522.3
  19. The Improving Research of Evaluation and Management in the Grassroots Organizations of Commercial Bank,F832.2
  20. Research on Performance Evaluation System of G Branch of KS Bank,F832.2
  21. Development of a multi- speed radar measurement system answering machine,V556

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Communication theory > Channel equalization
© 2012 www.DissertationTopic.Net  Mobile