| 摘要 |
PROBLEM TO BE SOLVED: To provide an orthogonal frequency-division multiplex communication device for making it difficult for a third party not related to communication to acquire communication details. SOLUTION: The orthogonal frequency-division multiplex communication device comprises: a means for managing a symbol number, a mapping table indicating the amount of the coordinate conversion of each subcarrier in a symbol corresponding to the symbol number, and the symbol number of a symbol to be transmitted; and a means for converting coordinates corresponding to the value of data carried by each subcarrier of the symbol based on the amount of the coordinate conversion of each subcarrier corresponding to the symbol number of the symbol and transmitting a symbol including the subcarrier based on respective coordinates after conversion. COPYRIGHT: (C)2009,JPO&INPIT
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