DIGITAL DATA TRANSMISSION - II

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DIGITAL DATA TRANSMISSION - II

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Spectrum of an FSK Signal : FSK involves frequency shifting a carrier between known fixed frequencies to convey digital data. Normally, FSK modulation is achieved using just two frequencies to represent binary data. For example, a frequency of 2000 Hz may represent a binary 1 (mark) and 1000 Hz a binary 0 (space). The energy of the signal alternates between the mark and space frequencies to convey the digital message. FSK describes the modulation of a carrier (or two carriers) by using a different frequency for a 1 or 0. The resultant modulated signal may be regarded as the sum...

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