Title :
A hybrid analogue/digital optical fiber transmission system using pulse width and amplitude modulation
Author :
Zhang, Jian-Guo ; Sharma, A.B. ; Kaewnin, M.
Author_Institution :
Telecommun. Program, Asian Inst. of Technol., Bangkok, Thailand
Abstract :
We present the principle and design of a cost-effective optical fiber communication system to support hybrid digital and analogue signal transmissions, by simultaneously using pulse width modulation (PWM) for the analogue signal and 2-level pulse amplitude modulation for the digital signal. A transmission system using the proposed pulse width and amplitude modulation (PWAM) essentially requires the same channel bandwidth as a conventional analogue PWM system. Moreover, we analyze the performance of PWAM optical fiber systems by considering the signal-to-noise ratio of 50 dB for video communications and the bit error rate of 10-9 for digital communications
Keywords :
cable television; digital communication; error statistics; optical fibre networks; optical modulation; pulse amplitude modulation; pulse width modulation; visual communication; 2-level pulse amplitude modulation; 50 dB; BER; PAM; PWAM optical fiber systems; PWM; SNR; analogue PWM system; analogue signal; bit error rate; channel bandwidth; cost-effective optical fiber communication system; digital communications; digital signal; hybrid analogue/digital optical fiber system; performance analysis; pulse width modulation; signal-to-noise ratio; video communications; Amplitude modulation; Bandwidth; Digital modulation; Optical design; Optical fiber communication; Optical fibers; Optical pulses; Pulse width modulation; Signal design; Space vector pulse width modulation;
Conference_Titel :
Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE
Conference_Location :
Sydney,NSW
Print_ISBN :
0-7803-4984-9
DOI :
10.1109/GLOCOM.1998.776878
