Optical OFDM/OQAM for the future optical communication

2014 ◽  
Author(s):  
Haibo Li ◽  
Qi Yang ◽  
Chao Li ◽  
Xuebing Zhang ◽  
Cai Li ◽  
...  
Keyword(s):  
Optical Communication ◽  
The Future ◽  
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 Li-Fi – the future of wireless technology

2018 ◽  
Vol 7 (2.4) ◽  
pp. 17
Author(s):  
C Shyamala Kumari ◽  
S Florence ◽  
K Prema ◽  
L Leema Priyadharshini
Keyword(s):  
Radio Frequency ◽  
Optical Communication ◽  
Electromagnetic Interference ◽  
Large Scale ◽  
Data Traffic ◽  
Wireless Technology ◽  
Huge Amount ◽  
Communication Method ◽  
The Future ◽  
Future Demands

In this era of technology the number of gadgets such as mobilephones, smartwatches, digital glasses and health trackers are used extensively by people in a large scale. The data traffic is abundant as the available radio frequency is limited, so the demand for the wireless network is keep on increasing. In order to meet the future demands there was a development in the optical communication method known as Li-Fi(Light-Fidelity).This will offer more bandwidth than the RF spectrum. They make use of LEDs to transmit the data. The main advantages of the Li-Fi is that there is no need of licensing and has a huge amount of unregulated bandwidth and there is zero electromagnetic interference so that the health hazards are nullified.

scholarly journals Signal-carrier interleaved optical OFDM for direct detection optical communication

2013 ◽  
Vol 21 (26) ◽  
pp. 32501 ◽  
Author(s):  
Xi Chen ◽  
Di Che ◽  
An Li ◽  
Jiayuan He ◽  
William Shieh
Keyword(s):  
Optical Communication ◽  
Direct Detection ◽  
Optical Ofdm

Comparison and Analysis of DCO-OFDM, ACO-OFDM and ADO-OFDM in IM/DD Systems

2014 ◽  
Vol 701-702 ◽  
pp. 1059-1062 ◽  
Author(s):  
Xu Zhang ◽  
Yu Fang Zhou ◽  
Yin Peng Yu ◽  
Peng Chao Han ◽  
Xiao Rui Wang
Keyword(s):  
Optical Communication ◽  
Orthogonal Frequency Division Multiplexing ◽  
Direct Detection ◽  
Optical Power ◽  
Frequency Division ◽  
Optical Efficiency ◽  
Power Efficient ◽  
Optical Ofdm ◽  
And Performance ◽  
Ofdm Signals

As a promising modulation technology for optical communication, Orthogonal Frequency Division Multiplexing (OFDM) is now increasingly used and a lot of ways of improving the optical efficiency of Intensity Modulated/ Direct Detection (IM/DD) systems have been proposed. And real and non-negative OFDM signals are required in this kind of system. Asymmetrically clipped DC biased Optical OFDM (DCO-OFDM), Asymmetrically Clipped Optical OFDM (ACO-OFDM) and Asymmetrically clipped DC biased Optical OFDM (ADO-OFDM) can satisfy this requirement. In this paper, we analysis the properties and performance orderly of the above three systems and simultaneously compare their performance. The simulation results show that DCO-OFDM is efficient in terms of bandwidth while the ACO-OFDM is efficient in terms of optical power. More importantly, ADO-OFDM is both power-efficient and bandwidth-efficient. At the same time, a developmentally proposal for the future OFDM in IM/DD systems is put forward.

Evaluation of Proposed Coherent Optical OFDM Link Using X-QAM with Polarization Division Multiplexing

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Suresh Kumar ◽  
Akshaya Dhingra ◽  
Payal Arora
Keyword(s):  
Communication Networks ◽  
Optical Communication ◽  
Orthogonal Frequency Division Multiplexing ◽  
Data Transfer ◽  
Large Data ◽  
Communication Model ◽  
Frequency Division ◽  
Data Rates ◽  
Optical Ofdm ◽  
Polarization Division Multiplexing

AbstractOrthogonal Frequency Division Multiplexing (OFDM) is one of the popular techniques used for 4 G, 5 G and backbone optical communication networks to meet the large data transfer requirement applications. Optical Communication model based on Coherent Optical OFDM (CO-OFDM) using 4-Quadrature Amplitude Modulation (QAM), 16-QAM and 64-QAM has been evaluated by different researchers. To understand and evaluate the effects of polarization, we have proposed an Optical Communication model with Polarization Division Multiplexing (PDM). The proposed CO-OFDM PDM system has been evaluated for different link lengths of 50, 100 and 150 km at varying data rates of 10, 20 and 30 Gbps. The performance of the designed link has been evaluated in terms of Q-factor, Bit Error Rate (BER), Optical Spectrum and constellation diagram. The results clearly exhibit that the Q-factor, BER and constellations are superior when PDM is incorporated with the CO-OFDM link using X-QAM.

Sign in / Sign up

Export Citation Format

Share Document