Multi-carrier transmission method and data transmitter
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United States of America Patent
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Jan 21, 2003
Grant Date -
N/A
app pub date -
Jan 21, 1999
filing date -
May 30, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Equipped with a plurality of mapping blocks 102 and 103 that carry out mappings of different rates, signals subjected to low-speed mapping are placed in the periphery of a band to which a plurality of sub-carriers are assigned at an interval corresponding to the symbol rate. The signal placed on the frequency axis in this way is converted to a time waveform through inverse Fourier transformation block 105, converted to a symbol time series through parallel/serial conversion block 106, then quadrature-modulated and transmitted.
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