Apparatus and method for GMSK baseband modulation based on a reference phase to be simplified
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United States of America Patent
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Oct 7, 2003
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N/A
app pub date -
Dec 27, 1999
filing date -
Dec 27, 1999
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Expired
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Abstract
The present invention is an apparatus and method for performing a Gaussian Minimum Shift Keying baseband modulation based on a reference phase to be simplified. The invention mainly comprises: a memory unit storing a plurality of parameters and their corresponding tabular data of a low pass Gaussian filter, the parameters and their corresponding tabular data being simplified in advance; the low pass filter being used for reducing the bandwidth of the apparatus and increasing the utilization of the bandwidth; and a processing unit based on the input digital data and the tabular data in the memory unit to generate the digital in-phase signal I.sub.n and the digital quadrature-phase signal Q.sub.n.
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