| 摘要 |
PROBLEM TO BE SOLVED: To prevent the effect suffered from adjacent channels even in the case of no guard band, in a transmitter. SOLUTION: In the transmitter, an information sequence 1 inputted to a mapping device 21-1 is so mapped into a predetermined signal point as to be outputted to a frequency converter 22-1. The frequency converter 22-1 so frequency-converts the inputted signal in response to its intermediate frequency as to output it to a multiplexer 23. Information sequences 2, 3 are so treated respectively similarly to the information sequence 1 as to be outputted to the multiplexer 23. The multiplexer 23 so multiplexes the inputted signals that an IFFT operator 24 inverse-Fourier-transforms the multiplexed signals in a lump. The inverse-Fourier-transformed signal is so orthogonal-modulated by an orthogonal modulator 26 and is so transformed further into an RF-band signal by a frequency modulator 28 as to be transformed via an antenna 30. COPYRIGHT: (C)2009,JPO&INPIT
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