Message Board

Respected readers, authors and reviewers, you can add comments to this page on any questions about the contribution, review,        editing and publication of this journal. We will give you an answer as soon as possible. Thank you for your support!

Name
E-mail
Phone
Title
Content
Verification Code
Volume 27 Issue 1
Jan.  2002
Turn off MathJax
Article Contents

DUAN Hanwen, SHEN Weiming, ZHU Rong, XU Zhengquan. Quick Algorithm for BCH Error-correcting Decoding of H.261 Video Coder Recommendation[J]. Geomatics and Information Science of Wuhan University, 2002, 27(1): 34-38.
Citation: DUAN Hanwen, SHEN Weiming, ZHU Rong, XU Zhengquan. Quick Algorithm for BCH Error-correcting Decoding of H.261 Video Coder Recommendation[J]. Geomatics and Information Science of Wuhan University, 2002, 27(1): 34-38.

Quick Algorithm for BCH Error-correcting Decoding of H.261 Video Coder Recommendation

  • Received Date: 2001-11-23
  • Publish Date: 2002-01-05
  • As BCH is a kind of linear error-correcting code with good performance up to now,it has been used widely.But for the relatively longer codes,it cost large computation,so special hardware is alwayes employed in real-time communication.But in low-cost communication system or desktop communication system with no hardware support,the most urgent problem is how to complete the computation of BCH code efficiently,namely the algorithm efficiency of BCH code.In this paper,firstly,coding method and error-correction theory of BCH(511,493) error-correcting in video coding recommendation H.261 are introduced,then the low efficiency in classical division algorithm with software completion is analyzed.Subsequently,a kind of quick algorithm on correcting 2-bit random errors is offered.With practical evidence,this algorithm can increase the whole running speed at least 20 times than the classical division algorithm and meet the requirement in real-time video communication.It has been successfully used in PSTN and ISDN videophone.
  • 加载中
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Article Metrics

Article views(639) PDF downloads(158) Cited by()

Related
Proportional views

Quick Algorithm for BCH Error-correcting Decoding of H.261 Video Coder Recommendation

Abstract: As BCH is a kind of linear error-correcting code with good performance up to now,it has been used widely.But for the relatively longer codes,it cost large computation,so special hardware is alwayes employed in real-time communication.But in low-cost communication system or desktop communication system with no hardware support,the most urgent problem is how to complete the computation of BCH code efficiently,namely the algorithm efficiency of BCH code.In this paper,firstly,coding method and error-correction theory of BCH(511,493) error-correcting in video coding recommendation H.261 are introduced,then the low efficiency in classical division algorithm with software completion is analyzed.Subsequently,a kind of quick algorithm on correcting 2-bit random errors is offered.With practical evidence,this algorithm can increase the whole running speed at least 20 times than the classical division algorithm and meet the requirement in real-time video communication.It has been successfully used in PSTN and ISDN videophone.

DUAN Hanwen, SHEN Weiming, ZHU Rong, XU Zhengquan. Quick Algorithm for BCH Error-correcting Decoding of H.261 Video Coder Recommendation[J]. Geomatics and Information Science of Wuhan University, 2002, 27(1): 34-38.
Citation: DUAN Hanwen, SHEN Weiming, ZHU Rong, XU Zhengquan. Quick Algorithm for BCH Error-correcting Decoding of H.261 Video Coder Recommendation[J]. Geomatics and Information Science of Wuhan University, 2002, 27(1): 34-38.

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return