Dissertation > Excellent graduate degree dissertation topics show

Rateless Codes for Fading Channels

Author: BaiBo
Tutor: BaiBaoMing
School: Xi'an University of Electronic Science and Technology
Course: Communication and Information System
Keywords: Fountain codes LDPC codes RA codes Joint limit Rayleigh fading channel
CLC: TN911.22
Type: Master's thesis
Year: 2011
Downloads: 81
Quote: 0
Read: Download Dissertation

Abstract


Traditional channel coding with a fixed bit rate , while the fountain codes to break this constraint , by any number of encoded symbols are continuously generated at the transmitting end , to achieve a bit rate coding method . The fountain codes without bitrate characteristics to enable it under conditions of the unknown channel status information of the transmitting side , according to the channel status adaptively adjusted rate, thereby improving the effectiveness of the transmission of information . The successful application of fountain codes and delete the channel , considering its extension to more general channels go . This paper studies a class designed for AWGN channel bit rate error-correcting codes --- Kite code , and improved on the basis of the code , a new class of bitrate code --- semi-random Kite (SR-Kite) codes . Randomly generates a parity check matrix of the original plain add some simple constraint , SR-Kite code can to a certain extent to reduce the error floor . This paper studies the performance of SR-Kite codes in AWGN and independent Rayleigh fading channels , and describes the design of a simulation - based greedy optimization algorithm to optimize the code . SR-Kite code weight enumeration function also deduced , and the use of joint limit the analysis of the code of the maximum likelihood decoding performance . In addition, the article also examines the performance of SR-Kite codes in combination with high-order modulation independent Rayleigh fading channels . Unlike conventional coded modulation schemes , the SR - of Kite code without bitrate characteristics, so when combined with higher order modulation can achieve a continuous change of the spectral efficiency within a certain range .

Related Dissertations

  1. Research on Decoding Algorithm for LDPC Codes,TN911.22
  2. Research on Distributed Fountain Codes,TN911.2
  3. Research on Distributed Source Coding Based on LDPC Codes,TN911.22
  4. Communication and Power Control Based on the Raptor Codes Over AWGN Channel,TN925
  5. Ary LDPC Decoding Algorithm,TN911.2
  6. Research on General Encoding Algorithms for LDPC Codes and FPGA Implementation,TN911.2
  7. Research on the Design of Reference Signal in LTE-Advanced,TN929.5
  8. Design on Satellite Transmission Link in Airborne Real-Time Information Collection System,TN927.2
  9. OFDM Communication Systems Based LDPC Coded and Performance Simulation,TN919.3
  10. The Implementation and Application of Wireless Channel Simulator Based on FPGA,TN929.5
  11. Arithmetic Research of Doppler Spread Estimation in Mobile OFDM Communication System,TN929.5
  12. Study on Iterative Detection Algorithm Based on LDPC Codes in MIMO System,TN919.3
  13. Studies on Low-Density Parity-Check Codes Encoding Algothrim,TN911.2
  14. The Research and Application of LDPC Codes Decoding Algorithm,TN911.2
  15. LDPC codes achieve and parallel concatenated codes of,TN911.2
  16. Interleaving multiple access wireless communication transmission technology research and Simulation,TN929.5
  17. Multiple repeat accumulate codes Research and Design,TN911.22
  18. DMB-TH system error correction code application algorithm design simulation and Implementation,TN911.22
  19. Wireless multicasting digital fountain codes and superposition coding and optimization of the joint,TN929.5
  20. Research on Key Technologies of Hardware Accelerator Template for Error Correction Code,TN911.22

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