Orthogonal freguency division multiplex communication device

Application Number: 00107094
Application Date: 2000.04.29
Publication Number: 1283019
Publication Date: 2001.02.07
Priority Information: 1999/7/29 JP 215459/99
International: H04J11/00
Applicant(s) Name: Matsushita Ekctric Industrical Co., Ltd.
Inventor(s) Name: Suto Hiroakira;Ishikawa Kimihiko
Patent Agency Code: 11105
Patent Agent: huang xiaolin
Abstract Synchronization symbol insertion section 102: inserts a synchronization symbol into a signal digital-modulated by modulation section 101 . O symbol insertion section 103 inserts a O symbol into the signal with the synchronization symbol inserted. The signal with the synchronization symbol and O symbol inserted in this way is sent to IFFT section 104 to be subjected to an IFFT calculation. Then, guard interval insertion section 105 inserts a guard interval into the IFFT transformed signal waveform. Then, the signal with the guard interval inserted in this way is D/A-converted by D/A converter 106 . The D/A-converted signal is subjected to normal radio transmission processing and then transmitted.