Compensation of diagonal ISI in OFDM signals
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United States of America Patent
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Jan 1, 2013
Grant Date -
Sep 10, 2009
app pub date -
Mar 10, 2008
filing date -
Mar 10, 2008
priority date (Note) -
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Abstract
A method and apparatus for compensating for ISI is described herein. A transmitter and receiver work together to develop pulse shaped OFDM symbols with reduced inter-channel ISI between pulse-shaped OFDM symbols transmitted on different sub-carriers at the same time, and inter-block ISI between pulse-shaped OFDM symbols transmitted on the same sub-carrier at different times. In addition, a pre-compensation element in the transmitter and/or a post-compensation element in the receiver compensate for diagonal ISI occurring between pulse-shaped OFDM symbols transmitted on different sub-carriers at different times.
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