METHOD AND APPARATUS OF COMPENSATION FOR AMPLITUDE AND PHASE DELAY USING SUB-BAND POLYPHASE FILTER BANK IN BROADBAND WIRELESS COMMUNICATION SYSTEM
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United States of America Patent
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Issued Date -
Oct 13, 2011
app pub date -
Dec 21, 2010
filing date -
Apr 8, 2010
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Abandoned
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Abstract
Provided is a method and apparatus improving a deterioration of a gain flatness and a phase characteristic that may be incurred while a baseband signal is transformed into a immediate frequency (IF) signal and a radio frequency (RF) signal in a broadband wireless communication system. A sub-band extractor may divide the broadband signal into multiple sub-band signals, may pre-compensate for a gain and a phase delay of each sub-band signals in the baseband, and may combine the pre-compensated sub-band signals into the single broadband signal and thus, the deterioration of the gain flatness and a phase delay flatness that may be incurred while the broadband signal is transformed into the IF signal and the RF to signal, may be improved.
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