PERFORMANCE ANALYSIS OF SUBCARRIER MULTIPLEXING RoF SYSTEM USING COHERENT RECEIVER
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Keywords:
radio over fiber
subcarrier multiplexing
Coherent receiver
optical modulation
EDFA
Abstract
In this paper, calculating model of Subcarrier Multiplexing (SCM) Radio over Fiber system using Coherent Receiver is built. Basing on it, we investigate dominant noises, determine signal power, calculate signal-to-noise ratio at receiver and receiver sensitivity with considering influence of subcarriers on system signal. Next, we simulate system by matLab, draw graphs showing receiver sensitivity versus number of subcarriers, versus EDFA gain, vesus local oscillator power in Coherence receiver corresponding to different modulations such as ASK, BPSK và QPSK. Besides, we also compare performance of two systems-using Direct Detection (DD) and Coherence Detection. Basing on comparing, analyzing, evaluating the performance of two these systems, we find out that thanks to using Coherent receiver, sensitivity is improved and signal quality transfered in this system is enhanced remarkably.
References
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[1] http://en.wikipedia.org/wiki/Radio_over_Fiber
[2] http://en.wikipedia.org/wiki/Subcarrier_multiplexing
[3] Govind P.Agrawal, “Fiber-optic communication systems”, 3rd ed, John Wiley and Sons Inc, Wiley series in microwave and optical engineering, 2002.
[4] M.Nakazawa, K.Kikichi, T.Miyazaki, “High Spectral Density Optical Communication Technologies”, optical and fiber communication reports 6, Springer 2010.
[5] Rongqing Hui, Benyaun Zhu, Renxiang Huang, Chritopher T.Allen, Kenneth R.Demarest, Douglas Richards, “Subcarrier multiplexing for high-speed optical transmission,”Jounal of Lightwave Technology, vol.20, No.3, March2002
[6] Chandrasekhar, S., et al "Balanced Dual Photodiodes Integrated with a 3dB Directional Coupler for Coherent Lightwave Receivers " Electronics letters, vol. 24, No.23, 1988, pp. 1457-1458.
[7] Christina Lim, Ampalavanapillai Nirmalathas, Yizhuo Yang, Dalma Novak, and Rod Waterhouse, “Radio-over-Fiber Systems,” Communications and Photonics Conference and Exhibition (ACP), 2009.
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Published
Jul 31, 2014
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How to Cite
Nguyen Van Tuan; Bui Phuc Chinh. “PERFORMANCE ANALYSIS OF SUBCARRIER MULTIPLEXING RoF SYSTEM USING COHERENT RECEIVER”. The University of Danang - Journal of Science and Technology, vol. 7, no. 80, July 2014, pp. 75-79, https://jst-ud.vn/jst-ud/article/view/656.
