Lasers, Fiber Optics, and Communications

Study on performance of coherent orthogonal frequency division multiplexing system in exponential atmospheric turbulent channel

[+] Author Affiliations
Yi Wang

China JiLiang University, College of Information Engineering, Hangzhou 310018, China

Harbin Institute of Technology, National Key Laboratory of Tunable Laser Technology, Harbin 150001, China

Yuan Li

China JiLiang University, College of Information Engineering, Hangzhou 310018, China

Jing Ma

Harbin Institute of Technology, National Key Laboratory of Tunable Laser Technology, Harbin 150001, China

Qiang Guo

Harbin Engineering University, College of Information and Communication Engineering, Harbin 150001, China

Opt. Eng. 55(11), 116110 (Nov 23, 2016). doi:10.1117/1.OE.55.11.116110
History: Received July 14, 2016; Accepted October 31, 2016
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Abstract.  We analyze the performance of a coherent orthogonal frequency division multiplexing (OFDM) system and a serial decode and forward relay transmission multihop coherent free-space optical OFDM system using an exponential distribution atmospheric turbulence model under the circumstance of strong atmospheric turbulence. The attenuation of the atmospheric channel fading model mainly considers the light intensity scintillation caused by atmospheric turbulence and interaction between the path consumption, the transmitter and the receiver. The OFDM signal mapping method uses quadrature amplitude modulation. We also derive the formulas of the outage probability and symbol error rate of the coherent OFDM and multihop system, respectively, under the conditions described above. In addition, a simulation is performed, which is essential to evaluate the influence of key factors including coherent detection in a number of relay nodes, the mapping orders, and the number of subcarriers, which have a significant effect on the outage performance and the bit error performance of the OFDM-FSO system under the strong atmospheric turbulence.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Yi Wang ; Yuan Li ; Jing Ma and Qiang Guo
"Study on performance of coherent orthogonal frequency division multiplexing system in exponential atmospheric turbulent channel", Opt. Eng. 55(11), 116110 (Nov 23, 2016). ; http://dx.doi.org/10.1117/1.OE.55.11.116110


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