Dissertation > Excellent graduate degree dissertation topics show

Research and Application of LDPC Code Used in DVB-S2 Standard

Author: XiaHongXing
Tutor: ZhangGuoPing
School: Central China Normal University
Course: Circuits and Systems
Keywords: LDPC codes DVB-S2 Decoder FPGA Check function unit
CLC: TN943
Type: Master's thesis
Year: 2005
Downloads: 543
Quote: 5
Read: Download Dissertation

Abstract


LDPC (Low-Density Parity-Check) code is proposed by Gallager in 1962 at the earliest packet error correction code having a sparse parity check matrix , also known as Gallager codes . Later , Mackay and other people to re-examine the LDPC code , and found that it has very good features: approaching the Shannon limit performance , easy to theoretical analysis and research , decoding simple and can be implemented in parallel operation , suitable for hardware implementation . DVB-S2 is a new generation of digital satellite broadcasting standards , the use of more efficient channel coding and adaptive modulation and coding , transmission efficiency than DVB-S is 30% higher . Wherein the channel coding using an LDPC code as the inner code , BCH code as the outer code . This paper first discusses the basic encoding of LDPC code decoding principle , and then focuses on the DVB-S2 standard LDPC code encoding and decoding method . The next proposed standard for DVB-S2 LDPC coding algorithm implemented in software , and combine MATLAB to calculate the theoretical performance of the LDPC codes . Then discuss the LDPC code decoding algorithm, and against the rules of the DVB-S2 coding matrix , the idea of the gamma - min decoder algorithm applied to the standard , this algorithm will increase the efficiency of the high code rate LDPC code decoding . Followed by discussion of the hardware design of the LDPC decoder core computing unit check the functional units . In order to improve the efficiency and reliability of the design used in this paper is based on the System Generator design method . The design on Xilinx's FPGA chip xc2s100 be achieved , and has been verified by the logic analyzer . Finally, the entire DVB-S2 transmission system to establish a simplified end - to - end model , further validates the effectiveness of the hardware modules , also pointed out the inadequacies of the design and direction of further research .

Related Dissertations

  1. Research on Electromagnetic Acoustic Transducer Detection System Based on FPGA,TH878.2
  2. Study on Drive and Control System of Five-Phase PMSM Based on FPGA,TM341
  3. Development of LXI Arbitrary Waveform Generator,TM935
  4. Design of Digital Predistorter for RF Power Amplifier Based on FPGA,TN722.75
  5. Synchronization and Channel Estimation Algorithm in Bursted OFDM System and Its Implementation on FPGA,TN919.3
  6. The Optimization of AVS Video Decoder on the PC Platform and Improvement of Field Decoding,TN919.81
  7. Performance Analysis of Anti-Multipath Capability in DSSS System and Study on the Compensation Methods,TN914.42
  8. Optimizing and Realising Research on Vedio Compression in TV Guidance System,TN919.81
  9. Research on Decoding Algorithm for LDPC Codes,TN911.22
  10. Research and Hardware Simulation of Multiuser Spread Spectrum Code Acquisition Based on FPGA,TN914.42
  11. Research on Basic Algorithms of Digital Image Processing and Implementation with FPGA,TP391.41
  12. Research of High Speed Image Pre-processing System Based on FPGA,TP391.41
  13. Design of High-Speed Digital Image Acquisition and Interface Based on FPGA,TP274.2
  14. Development of Inductance Sensor Data Acquisition System Based on FPGA,TP274.2
  15. Development of Serial Bus Analyzer Based on Nios,TP274
  16. Development of PMC High-speed Data Transmission Board Design Based on FPGA-RocketIO_X,TP274.2
  17. Development of Pxibus High Performance Digital I/O Module,TP274
  18. Development of LXI Counter,TP274
  19. A High-Speed and Real-Time Data Acquisition System Based on FPGA,TP274.2
  20. Design of GPS Information Receiving System Based on Nios Ⅱ,TN967.1
  21. Temperature and pressure explosives temperature field memory test technology,TQ560.7

CLC: > Industrial Technology > Radio electronics, telecommunications technology > TV > Transmission of television signals
© 2012 www.DissertationTopic.Net  Mobile