J4 ›› 2009, Vol. 36 ›› Issue (5): 771-776.

• 研究论文 • 上一篇    下一篇

DVB-S接收系统中内码信息的快速估计

刘健1;王晓君2,3;周希元1,3;谢锘1,3   

  1. (1. 西安电子科技大学 综合业务网理论及关键技术国家重点实验室,陕西 西安  710071;
    2. 河北科技大学 信息科学与工程学院,河北 石家庄  050018;
    3. 中国电子科技集团公司第54所,河北 石家庄  050081)
  • 收稿日期:2008-11-05 出版日期:2009-10-20 发布日期:2009-11-30
  • 通讯作者: 刘健
  • 基金资助:

    国家自然科学基金资助(60572147)

Fast estimation of inner-code information in the DVB-S receiving system

LIU Jian1;WANG Xiao-jun2,3;ZHOU Xi-yuan1,3;XIE Nuo1,3   

  1. (1. State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an  710071, China;
    2. College of Information Sci. and Eng., Hebei Univ. of Sci. & Tech., Shijiazhuang  050018, China;
    3. The No. 54 Research Inst. of CETC, Shijiazhuang  050081, China)
  • Received:2008-11-05 Online:2009-10-20 Published:2009-11-30
  • Contact: LIU Jian

摘要:

基于卷积码先验校验向量,提出了一种数字视频广播卫星标准(DVB-S)接收系统中内码信息估计的快速算法.在误码率较高的情况下,利用先验校验向量进行内码估计,在误码率较低的情况下,利用快速算法求解校验向量来进行内码估计.实验结果表明,在保证估计可靠性的前提下,该算法的估计时间约为传统算法的10%.

关键词: 误码率, DVB-S, 快速估计, 内码, 校验矩阵

Abstract:

Based on the transcendent parity-check vector of convolutional coding, a fast algorithm for estimating inner code information in the DVB-S (digital video broadcast satellite) receiving system is proposed. Under the condition of a high bit error rate, the transcendent parity-check vector is used to estimate the inner code; under the condition of a low bit error rate, the parity-check vector computed with the fast algorithm is used to estimate the inner code. Simulation experiment shows that by using the proposed algorithm the estimating time can be reduced to 10% that of the traditional algorithm with the reliable estimation.

Key words: bit error rate, DVB-S, fast estimation, inner code, parity-check matrix

中图分类号: 

  • TN911.23
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