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. | LAB REPORT EXPERIMENT 6 DIGITAL DATA TRANSMISSION - II SUBMITTED BY PURPOSE The Objectives of this laboratory are 1. To examine the frequency spectrum of an FSK signal. 2. To examine the correlation between two FSK signals. 3. To implement and investigate a coherent FSK detection system. EQUIPMENT LIST 1. PC wth Matlab and simulink LABORATORY PROCEDURE I. 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 of two amplitude modulated signals of different carrier frequencies - fl fl Figure 1a Frequency shift keying Figure 1b Frequency shift keying -- frequency .
