| 摘要 |
A data modular based on Gaussian minimum shift keying (GMSK) modulation and a data transmitter including the same in which the data modulator includes a read-only memory (ROM) table storing GMSK modulation data with respect to information bits; a low-pass filter filtering first GMSK modulation data, which is output from the ROM table based on a predetermined input bitstream, and outputting second GMSK modulation data; and a multiplexer selecting and outputting the first GMSK modulation data or the second GMSK modulation data based on a predetermined control signal. The data modulator selectively filters a GMSK modulation signal according to a channel state, thereby effectively controlling trade-off between inter-symbol interference and adjacent channel interference according the channel state.
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