Earticle

초록

영어

Due to the popularity of LDPC (Low Density Parity Codes) in modern communication systems, there is a growing need of LDPC encoder with a faster encoding speed and more application compatibility. In this paper, an efficient QC-LDPC encoder architecture is proposed, which is suitable for both IEEE 802.16e standard and IEEE 802.11n standard. Owing to the special structure of multi-diagonal parity matrices, the inverse matrix is replaced with back substitution. Simplified RU algorithm is applied to the encoder structure, and the parallelism is determined by the row number of parity matrices in the two standards. The proposed architecture has full configurability with concern to code rate and code length. Simulation results confirm that the encoders work successfully from 1/2 rate to 5/6 rate under both two standards. To validate its feasibility, we have tested all code lengths of IEEE 802.11n standard and IEEE 806.12e standard. They all work accurately with the proposed encoder architecture, with the output throughputs ranging between 538 Mbps and 2879 Mbps.

목차

Abstract
 1. Introduction
 2. Simplified Algorithm for Two Standards
 3. Common Encoder Architecture for the Two Standards
  3.1. Overall Encoding Structure
  3.2. Matrix-to-Vector Multiplications and p0 Calculation
  3.3. Calculations for p1
 4. Simulations and Comparisons
 5. Conclusions
 Acknowledgement
 References

키워드

저자

• Xiumin Wang [ College of Information Engineering, China Jiliang University, Hangzhou, China, 310018 ]
• Tingting Ge [ College of Information Engineering, China Jiliang University, Hangzhou, China, 310018 ]
• Yi Wang [ College of Information Engineering, China Jiliang University, Hangzhou, China, 310018 ]
• Zhengquan Li [ College of Information Engineering, China Jiliang University, Hangzhou, China, 310018, National Mobile Communications Research Laboratory, Southeast University Nanjing, China, 210018 ]
• Nurul I. Sarkar [ School of Computing & Mathematical Sciences, Auckland University of Technology, New Zealand ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Control and Automation

• 간기

  월간

• pISSN

  2005-4297

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605