MULTIPLEXING DEVICE AND METHOD FOR ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM
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United States of America Patent
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Issued Date -
Aug 4, 2011
app pub date -
Jun 26, 2009
filing date -
Jun 30, 2008
priority date (Note) -
Abandoned
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Abstract
A multiplexing device for orthogonal frequency division multiplexing (OFDM) system comprises a first unit for combining N-path differential-modulation symbol sequences and mapping to sub-carriers of inverse fast Fourier transformation, N is an integer which is greater than 1, and a second unit for executing the IFFT of sub-carriers to realize frequency division multiplexing of multi-path differential-modulation symbol sequences. The multiplexing transmitting device can not only realize multiplexing transmission of multi-path signals in differential OFDM system, but also the device can be very simply realized, the multiplexing method for OFDM system is also disclosed.
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