Design and Implementation of Blind Equalization Algorithm for Multiband CAP Modulation in High Speed and High Spectral Efficiency Optical Data Link

2015 ◽  
Author(s):  
Fangjian Li ◽  
Min Zhang ◽  
Danshi Wang
Keyword(s):  
Spectral Efficiency ◽  
High Speed ◽  
Blind Equalization ◽  
Optical Data ◽  
Data Link ◽  
Design And Implementation ◽  
Equalization Algorithm ◽  
High Spectral Efficiency

Design and Implementation of Error Simulator Based FPGA for Optical Data Link Transfer Test

2015 ◽  
Vol 727-728 ◽  
pp. 951-954
Author(s):  
Bin Wei Deng ◽  
Chong Han Liu
Keyword(s):  
High Speed ◽  
Hadron Collider ◽  
Liquid Argon ◽  
Radiation Environment ◽  
Optical Data ◽  
Simulation Test ◽  
Data Link ◽  
Design And Implementation ◽  
Front End ◽  
High Speed Data

There is the extremely high radiation in the detector of ATLAS for LHC (Large Hadron Collider). The upgrading ATLAS Liquid Argon Calorimeter readout optical data link includes on-detector (front-end) and off-detector (back-end). There are the data stream burst continuous multi-bits errors and bit slip when the high-speed data are collected and transferred under the extremely high levels of radiation environment on the front-end. The data is restored on the back-end by FPGA. The design and implementation of error simulator based a Xilinx Kintex 7 for front-end is proposed in this paper to support the design and simulation test of the decoder and encoder of LOCic. Experimental and data analysis show it is valid.

A VLSI-compatible high-speed silicon photodetector for optical data link applications

1996 ◽  
Vol 43 (7) ◽  
pp. 1054-1060 ◽  
Author(s):  
M. Ghioni ◽  
F. Zappa ◽  
V.P. Kesan ◽  
J. Warnock
Keyword(s):  
High Speed ◽  
Optical Data ◽  
Data Link ◽  
Silicon Photodetector

ELECTRONICS FOR HIGH SPEED, BURST MODE OPTICAL COMMUNICATIONS

1990 ◽  
Vol 01 (03n04) ◽  
pp. 223-243 ◽  
Author(s):  
R.G. SWARTZ ◽  
Y. OTA
Keyword(s):  
Communication Systems ◽  
High Speed ◽  
Data Communication ◽  
Optical Fiber Communication ◽  
Digital Data ◽  
Optical Data ◽  
Data Link ◽  
Fiber Communication ◽  
Burst Mode ◽  
Multiple Channel

Electronics for burst mode data communication over an optical data link will contribute to wider acceptance of photonic technology. This paper describes the concepts and difficulties inherent in burst mode optical communication systems, and proposes a new solution employing an ultra-high speed, high accuracy peak detector. Sensitivity penalties associated with this technique are reviewed. The method was implemented in an optical receiver with dc to 500 Mb/s operation, and at 200 Mb/s, demonstrates an isolated pulse sensitivity of −29.5 dBm, and pulse width distortion less than lns. An example application, the Multiple channel Optical Data LINK (MODLINK), is described: a fully dc-coupled, 12 parallel channel digital data link system designed for high speed optical fiber communication at bit rates ranging from dc to 200 Mb/s per channel, applicable at distances of centimeters to over 3 km.

An Improved Algorithm Based on Optimized PTS in MIMO-OFDM System

2013 ◽  
Vol 765-767 ◽  
pp. 2801-2804
Author(s):  
Ya Jing Wang ◽  
Ya Zhen Li ◽  
Li Qun Huang
Keyword(s):  
Spectral Efficiency ◽  
Communication System ◽  
High Speed ◽  
Fourth Generation ◽  
Ofdm System ◽  
Broadband Wireless ◽  
High Spectral Efficiency ◽  
Mimo Ofdm ◽  
Simulation Results ◽  
Improved Algorithm

The fourth generation mobile communication system is a high-speed broadband wireless communication system, it needs MIMO and OFDM technology which have high spectral efficiency and suitable for a multi-path fading channel. Because the MIMO-OFDM system is still an multi-carrier modulation system, the main drawback is the high PAPR value. This paper proposed an improved algorithm based on optimized PTS to reduce PAPR in STBC MIMO-OFDM system. The simulation results show that the improved algorithm can effectively reduce the PAPR value and do not increase the amount of computation in STBC MIMO-OFDM system.

scholarly journals HERMITIAN SYMMETRY BASED FIBER NON-LINEARITY COMPENSATION IN OPTICAL OFDM NETWORKS

2013 ◽  
pp. 8-14
Author(s):  
KAMALA KANNAN P ◽  
GURU VIGNESH B ◽  
INIYAN P A ◽  
ILAVARASAN T
Keyword(s):  
Optical Fiber ◽  
Optical Networks ◽  
Spectral Efficiency ◽  
Communication Systems ◽  
Orthogonal Frequency Division Multiplexing ◽  
High Speed ◽  
Power Level ◽  
Optical Fiber Communication ◽  
High Spectral Efficiency ◽  
Optical Ofdm

Orthogonal Frequency Division Multiplexing (OFDM) is a modulation technique which is now used in most new and emerging broadband wired and wireless communication systems such as standard 802.11a/b/g/n, Digital Video Broad casting Television (DVB-TV), and Long Term Evolution (LTE) in the next mobile generation, due to its capacity in solving the problems of Inter-Symbol Interference (ISI) caused by the effects of the dispersive channel. Very recently researches focus on applying OFDM technology in optical fiber communication systems. Optical OFDM is well suited for high speed transmission systems with high spectral efficiency and attracted significant attention from the optical communication community. One of the major issues that degrade the performance of optical OFDM networks is its fiber non-linearity. Fiber non-linearities represent the fundamental limiting mechanisms to the amount of data that can be transmitted on a single optical fiber. Non-linear effects arise as optical fiber data rates, transmission lengths, number of wavelengths, and optical power level increases. Therefore, the effect of non-linearity in high data rate optical networks needs to be controlled to enhance link performances. In this paper, a nonlinearity compensation technique (Hermitian Symmetry) is implemented to improve the performance of OFDM based optical networks. This would provide high spectral efficiency, low ISI and very good Bit Error Rate (BER) performances without increasing the complexity of the network. The optical OFDM transmission system with fiber non-linearity compensation is simulated using Virtual Photonics Integrated (VPI) software.

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