DVB-S接收系统中内码信息的快速估计

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

• Original Articles • Previous Articles Next Articles

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

LIU Jian¹;WANG Xiao-jun^2,3;ZHOU Xi-yuan^1,3;XIE Nuo^1,3

(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 E-mail:liujian_1101@163.com

Abstract

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

CLC Number:

TN911.23

LIU Jian;WANG Xiao-jun;ZHOU Xi-yuan1,3;XIE Nuo. Fast estimation of inner-code information in the DVB-S receiving system[J].J4, 2009, 36(5): 771-776.

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

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