Title :
Video transmission in optical fiber communication systems using pulse frequency modulation
Author :
Heker, Sergio F. ; Herskowitz, Gerald J. ; Grebel, Haim ; Wickansky, H.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Stevens Inst. of Technol., Hoboken, NJ, USA
fDate :
2/1/1988 12:00:00 AM
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
Keywords :
optical communication; optical fibres; pulse frequency modulation; video signals; 40 dB; 50 MHz; PFM; SNR; modulation index; operating conditions; optical fiber communication systems; processing gain; pulse frequency modulation; pulse-frequency modulation; receiver carrier-to-noise ratio; signal-to-noise ratio; system bandwidth; Bandwidth; Frequency modulation; Optical distortion; Optical fiber communication; Optical fibers; Optical noise; Optical pulses; Optical receivers; Phase noise; Pulse modulation;
Journal_Title :
Communications, IEEE Transactions on
