Transmission apparatus, reception apparatus and digital radio communication method
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United States of America Patent
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Apr 15, 2008
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app pub date -
Apr 20, 2004
filing date -
Jul 28, 1999
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Abstract
A transmission apparatus includes a frame configuration determiner that determines a modulation system from among a plurality of modulation systems on a communication situation. A first symbol generator modulates a digital transmission signal according to the modulation system determined by the frame configuration determiner and generates a first symbol, the first symbol comprising a first quadrature baseband signal. A second symbol generator modulates the digital transmission signal according to a predetermined modulation system and generates a second symbol, the second symbol comprising a second quadrature baseband signal.
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