Using OFDM to correct distortions in ultra-wide-band radios operating over flat millimeter-wave channels
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United States of America Patent
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Apr 9, 2013
Grant Date -
Mar 29, 2012
app pub date -
Sep 29, 2010
filing date -
Sep 29, 2010
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Abstract
A Point-to-Point communication system includes (i) a millimeter-wave channel having a substantially flat channel transfer function between a first frequency of millimeter-waves and a second frequency of millimeter-waves, the two frequencies are separated by at least 500 MHz, (ii) a transmission system configured to transmit an Orthogonal Frequency Division Multiplexing (OFDM) signal having a bandwidth of at least 100 MHz over the millimeter-wave channel as a millimeter-wave signal located between the first frequency and the second frequency, and (iii) a reception system comprising a radio receiver having a substantially non-flat reception transfer function over the bandwidth of the OFDM signal, configured to receive the millimeter-wave signal via the millimeter-wave channel and down-convert the millimeter-wave signal into a reconstruction of the OFDM signal having a bandwidth of at least 100 MHz, and an OFDM de-modulator configured to compensate for the substantially non-flat reception transfer function, by de-modulating the reconstruction of the OFDM signal.
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