MODULATION METHOD AND RADIO COMMUNICATION SYSTEM
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United States of America Patent
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app pub date -
Mar 22, 2012
filing date -
Jan 30, 1998
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Abstract
An input digital signal is periodically and alternately subjected to first modulation and second modulation, being thereby converted into a pair of a baseband I signal and a baseband Q signal. The first modulation and the second modulation are different from each other. The pair of the baseband I signal and the baseband Q signal are outputted. The first modulation may be at least 8-signal-point modulation while the second modulation may be phase shift keying.
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