Transmitting device and method, and providing medium

Details Transmitting device and method, and providing medium Transmitting device and method, and providing medium

2005-12-27

2005-12-27

Ton, Dang (Department: 2666)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

C370S211000

Reexamination Certificate

active

06980509

ABSTRACT:
A transmission apparatus which prevents adversely affects from an adjacent channel even without provision of a guard band. An information sequence1input to a mapping unit21-1of the transmission apparatus is mapped onto predetermined signal points by QAM modulation, etc. and output to a frequency converter22-1. The frequency converter22-1converts the frequency according to a center frequency of an input signal and outputs the result to a multiplexer23. The other data series are processed in the same way as the data series1are output to the multiplexer23. The multiplexer23multiplexes a plurality of input signals, while an IFFT processor24performs an inverse Fourier transform on the multiplexed signals all at once. The inverse Fourier transformed signal is quadrature-modulated by a quadrature modulator26, converted to the RF band signal by the frequency converter28, and transmitted from an antenna30.

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