Robust Key Generation From Optical OFDM Signal in Indoor VLC Networks

2016 ◽  
Vol 28 (22) ◽  
pp. 2629-2632 ◽  
Author(s):  
Yahya M. Al-Moliki ◽  
Mohammed T. Alresheedi ◽  
Yahya Al-Harthi
Keyword(s):  
Key Generation ◽  
Ofdm Signal ◽  
Optical Ofdm

A Wavelength Interleaved DWDM ROF System with 60GHz Optical OFDM Signal

2011 ◽  
Vol 130-134 ◽  
pp. 2245-2248
Author(s):  
Yong Hong Ma ◽  
Chong Xiang Zhang ◽  
Pan Zhang
Keyword(s):  
High Speed ◽  
Radio Over Fiber ◽  
Experimental Results ◽  
Arrayed Waveguide Grating ◽  
Waveguide Grating ◽  
Access System ◽  
Ofdm Signal ◽  
The Future ◽  
Optical Ofdm ◽  
Arrayed Waveguide

we demonstrate a wavelength interleaved DWDM Radio-over-Fiber (ROF) system for providing 1-Gb/s OFDM signal in downlink and 1-Gb/s OOK data in uplink simultaneously. In this scheme, we use only one arrayed waveguide grating device at the remote node to realize both the de-multiplexing and multiplexing functions. The experimental results demonstrate that this scheme is feasible to the future broadband high-speed OFDM-ROF access system.

scholarly journals Real-time experimental demonstration of
low-cost VCSEL intensity-modulated 1125Gb/s optical OFDM signal transmission over 25km PON systems

2011 ◽  
Vol 19 (4) ◽  
pp. 2979 ◽  
Author(s):  
E. Hugues-Salas ◽  
R.P. Giddings ◽  
X.Q. Jin ◽  
J. L. Wei ◽  
X. Zheng ◽  
...  
Keyword(s):  
Real Time ◽  
Low Cost ◽  
Signal Transmission ◽  
Experimental Demonstration ◽  
Intensity Modulated ◽  
Ofdm Signal ◽  
Optical Ofdm

scholarly journals Soliton content in the standard optical OFDM signal

2018 ◽  
Vol 43 (24) ◽  
pp. 5985 ◽  
Author(s):  
Egor V. Sedov ◽  
Alexey A. Redyuk ◽  
Mikhail P. Fedoruk ◽  
Andrey A. Gelash ◽  
Leonid L. Frumin ◽  
...  
Keyword(s):  
Ofdm Signal ◽  
Optical Ofdm

scholarly journals Secret Key Generation Protocol for Optical OFDM Systems in Indoor VLC Networks

2017 ◽  
Vol 9 (2) ◽  
pp. 1-15 ◽  
Author(s):  
Yahya Mohammed Al-Moliki ◽  
Mohammed Thamer Alresheedi ◽  
Yahya Al-Harthi
Keyword(s):  
Key Generation ◽  
Ofdm Systems ◽  
Secret Key ◽  
Secret Key Generation ◽  
Optical Ofdm

scholarly journals Theoretical and Experimental Investigation of Direct Detection Optical OFDM Systems with Clipping and Normalization

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Jiang Wu ◽  
Zhongpeng Wang
Keyword(s):  
Orthogonal Frequency Division Multiplexing ◽  
Direct Detection ◽  
Single Mode ◽  
Superior Performance ◽  
Ofdm Systems ◽  
Ofdm System ◽  
Transmission Scheme ◽  
Awgn Channel ◽  
Ofdm Signal ◽  
Optical Ofdm

A data clipping and normalization technique is employed to improve the performance of the overall direct detection optical orthogonal frequency division multiplexing (DCO-OFDM) system. A detailed analysis of clipping distortion introduced by digital clipping and normalization is provided. The normalization operation amplifies the clipped data signal to the maximum input amplitude of a digital-to-analog converter (DAC). Based on the analysis, a BER formula of the proposed scheme is derived over the AWGN channel and single fiber channel. Performance of an optical clipped OFDM with normalization is assessed through numerical simulations and Monte Claro simulation over the AWGN channel. Theoretical analysis and simulation results both show that the clipping and normalization scheme can greatly improve the BER of an optical OFDM. In particular, BER performance of the proposed transmission scheme was measured in a practical OFDM transmission platform. The measured experimental results show that the clipped and amplified OFDM signal exhibits superior performance in comparison with the conventional OFDM signal. The received sensitivity at a BER of 10−3 for a 4 Gsamples/s (2.6667 Gbits/s) clipped and normalized OFDM signal with clipping ratio of 4 after 100 km standard single-mode fiber (SMF) transmission was improved by 4.3 dB when compared with the conventional OFDM system. The measured results also showed that the clipped OFDM signal exhibits superior performance in comparison with the conventional OFDM signal. Therefore, a clipping and normalization at the transmitter is most effective, and a substantial performance improvement can be obtained by a simple normalization after clipping.

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