Video transmission in optical fiber communication systems usingpulse frequency modulation |
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| Authors: | Heker S.F. Herskowitz G.J. Grebel H. Wickansky H. |
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| Affiliation: | Dept. of Electr. Eng. & Comput. Sci., Stevens Inst. of Technol., Hoboken, NJ; |
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| Abstract: | A design procedure has been developed to determine the required operating conditions for a pulse-frequency modulation (PFM) system (modulation index, required system bandwidth, and receiver carrier-to-noise ratio (CNR) for a specified receiver SNR (signal-to-noise ratio) and number of clicks per second. The PFM processing gain (=SNR/CNR) was measured to be 40 dB for a modulation index of β=2.5, which agrees closely with the theory. The theoretical processing gain advantage of PFM over FM is 15.9 dB for a modulation index of β=2.5 with receiver bandwidth Brx =50 MHz |
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