Transmission apparatus and method and providing medium thereof

Details Transmission apparatus and method and providing medium thereof Transmission apparatus and method and providing medium thereof

2007-01-30

2007-01-30

Pham, Chi (Department: 2616)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

C370S211000

Reexamination Certificate

active

11214158

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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International Search Report in International Application No. PCT/JP00/01349, mailed May 30, 2000 (2 pages).

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