scholarly journals Timing Synchronization Method for Asymmetrically Clipped DC Biased Optical OFDM System

2016 ◽  
Vol 06 (08) ◽  
pp. 14-18
Author(s):  
Yong Wang
Keyword(s):  
Timing Synchronization ◽  
Ofdm System ◽  
Synchronization Method ◽  
Optical Ofdm

Research on Timing Synchronization Method for DC-Biased Optical OFDM Communication System

2013 ◽  
Vol 441 ◽  
pp. 911-914 ◽  
Author(s):  
Yong Wang ◽  
Yan Ling Jing
Keyword(s):  
Communication System ◽  
Direct Detection ◽  
Intensity Modulation ◽  
Timing Synchronization ◽  
Ofdm System ◽  
Synchronization Method ◽  
System Use ◽  
Optical Ofdm ◽  
Simulation Results

The timing synchronization methods for dc-biased optical OFDM system are different from wireless OFDM system because dc-biased optical OFDM system use intensity modulation/direct detection. Existing synchronization methods cant be used directly in dc-biased optical OFDM system. Therefore, the new timing synchronization method for dc-biased optical OFDM system is presented. The simulation results show that this timing synchronization method increasingly improves the estimated accuracy of dc-biased optical OFDM system.

An enhanced fine timing synchronization method for diagonal pilot OFDM system

ICTC 2011 ◽  
2011 ◽  
Author(s):  
Il Muk Choi ◽  
Kyung Hoon Won ◽  
Hyung-Jin Choi ◽  
Young Gun Ji
Keyword(s):  
Timing Synchronization ◽  
Ofdm System ◽  
Synchronization Method

An Improved Frame Synchronization for Optical OFDM Systems

2012 ◽  
Vol 571 ◽  
pp. 646-650
Author(s):  
Meng Liang ◽  
Rong Lu ◽  
Yuan Bo Wang ◽  
Jia Min Gong
Keyword(s):  
Orthogonal Frequency Division Multiplexing ◽  
Direct Detection ◽  
Dispersion Compensation ◽  
Critical Factor ◽  
Timing Synchronization ◽  
Frame Synchronization ◽  
Ofdm Systems ◽  
Ofdm System ◽  
Transmission Distance ◽  
Optical Ofdm

Orthogonal frequency division multiplexing (OFDM) is applied to optical communication widely because of its robustness against channel dispersion and high spectral efficiency. But the synchronization between transmitter and receiver is a critical factor for system performances. This paper proposes an improved frame timing synchronization algorithm for optical OFDM system to keep synchronization by delay time compensation. The simulation of 40 Gb/s single-side-band (SSB) direct-detection optical OFDM system is setup and investigated. The curve of timing metric and the constellation of four-quadrature amplitude modulation (QAM) are given in the paper. And the transmission distance using the proposed method is compared with Park method. The simulation results show that the improved frame synchronization method promote the performances of optical OFDM system greatly. The distance can be 1600 km without dispersion compensation under the bit error ratio of 10-4.

Performance monitoring on the orthogonality among the multisubcarriers of an all-optical OFDM system

2009 ◽  
Author(s):  
Shumin Zou ◽  
Nan Chi ◽  
Yufeng Shao ◽  
Xi Zheng ◽  
Junwen Zhang ◽  
...  
Keyword(s):  
Performance Monitoring ◽  
Ofdm System ◽  
All Optical ◽  
Optical Ofdm

An improved least square channel estimation algorithm for coherent optical OFDM system

Optik ◽  
2013 ◽  
Vol 124 (23) ◽  
pp. 5937-5940 ◽  
Author(s):  
S. Zhang ◽  
C.L. Bai ◽  
Q.L. Luo ◽  
L. Huang ◽  
F.F. He
Keyword(s):  
Channel Estimation ◽  
Estimation Algorithm ◽  
Least Square ◽  
Ofdm System ◽  
Square Channel ◽  
Optical Ofdm
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