METHOD AND DEVICE FOR DECODING SUPERIMPOSED CODE

Title:

METHOD AND DEVICE FOR DECODING SUPERIMPOSED CODE

Document Type and Number:

Japanese Patent JP2702049

Kind Code:

B2

Abstract:

PURPOSE: To improve a decoding error rate when digital communication is executed through the use of an superimposed code.
CONSTITUTION: When an F code decoding section 21 decodes an Fi code based on each vector ri (i=0, 1,...N) of a reception signal divided by a reception signal division section 11, the section 21 detects an error for each bit location (j) (j=0, 1,...n-1) to generate a missing flag Ei(j). An f-code extract section 24 extracts a j-th bit of a vector r0 as a j-th bit of a reception word of the f-code when a missing flag missing flag Ei(j) of any (i) is cleared. Conversely, when the missing flag Ei(j) is set to any (i), the section 24 replaces the j-th bit of the reception word of the f-code with a bit candidate fed from a bit candidate generating section 23. An f-code decoding section 25 decodes the reception word of the f-code and an information bit extract section 15 extracts an information bit from the decoding result of the F1 code and the f-code.

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Inventors:

Masao Kasahara
Toru Haneda
Hirasawa Shigekazu

Application Number:

JP4493993A

Publication Date:

January 21, 1998

Filing Date:

March 05, 1993

Export Citation:

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Assignee:

Japan Radio Co., Ltd.

International Classes:

H03M13/00; H04L1/00; (IPC1-7): H04L1/00; H03M13/00

Domestic Patent References:

JP2260824A
JP1291541A

Attorney, Agent or Firm:

Kenji Yoshida (2 outside)

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