| 摘要 |
<P>PROBLEM TO BE SOLVED: To allow receiving side digital radio equipment 12 in a digital radio communication system 10 to shorten processing for extracting information of a NID (Network Identifier) of a BCH code of a reception frame. <P>SOLUTION: The NID includes information of a NAC (Network Access Code) and a UnitID (Data Unit ID), and in each receiving period, the NAC is unchanging and four UnitIDs exist at most. In the first frame, the NID is subjected to error correction on the basis of its check bit and then, decoded, the NAC is extracted (S21NO→S22→S25), and reference data is generated on the basis of a combination of the extracted NAC and a UnitID having the possibility of reception (S26). About a NID of the second and succeeding reception frames, the minimum number of error bits of a bit stream of the extracted NID for each reference data is specified, and UnitID information associated with the minimum number is made UnitID information of the reception frame. <P>COPYRIGHT: (C)2009,JPO&INPIT |
