Transmitted-signal producing method, communicating method, and data structure of transmitted signal
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United States of America Patent
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Issued Date -
Jan 5, 2006
app pub date -
Aug 29, 2003
filing date -
Aug 30, 2002
priority date (Note) -
Abandoned
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Abstract
When transmission data is modulated via spread spectrum, not a spreading sequence itself but a transmission data sequence is processed to make the periodic spectrum of a transmission signal a non-correlated spectrum to reduce an increase in the amplitude of the signal and to reduce the dynamic range of an amplifier on a receiving side. A transmission signal production method comprises the steps of multiplying the transmission data by the coefficients of a predetermined coefficient sequence to produce a plurality of transmission data; and adding 0 data of a predetermined length between the plurality of transmission data, produced by multiplying the transmission data by the coefficients, to produce a transmission data sequence.
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