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METHOD AND APPARATUS FOR EXTRACTING DATA FROM MULTI-CARRIER SIGNALS, A METHOD OF USING THE DATA EXTRACTION METHOD, A GLOBAL NAVIGATION SATELLITE SYSTEM RECEIVER USING THE DATA EXTRACTION METHOD, AND MACHINE-READABLE STORAGE
METHOD AND APPARATUS FOR EXTRACTING DATA FROM MULTI-CARRIER SIGNALS, A METHOD OF USING THE DATA EXTRACTION METHOD, A GLOBAL NAVIGATION SATELLITE SYSTEM RECEIVER USING THE DATA EXTRACTION METHOD, AND MACHINE-READABLE STORAGE
PURPOSE: A method and apparatus for extracting data from multi-carrier signals are provided to reduce sampling speed by reducing IF bandwidth.;CONSTITUTION: At least three data signals are received. The three data signals are modulated to transmit corresponding data. A first local signal is generated. The first local signal has a first frequency LO1. Three data signals and the first local signal are mixed. A first mix signal is generated. The first mixed signal which is filtered by a first filter is generated. A filtering unit has a bandwidth of BWf. The first filtered signal is processed to extract data. A second local signal is generated. The second local signal has a second other frequency LO2.;COPYRIGHT KIPO 2010
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