Review Paper
LITERATURE REVIEW ON ORTHOGONAL FREQUENCY-DIVISION
MULTIPLEXING
Amanpreet Kaura, Kamaljit Singh Bhatiab a,b Department of Electronics Engineering, Sri Guru Granth Sahib World University,
Fatehgarh Sahib, India
Corresponding Author:kamalbhatia.er@gmail.com
To design optical OFDM using low bandwidth electronics and optoelectronics components,also low loss comb-line combiner using the IFFT,lightware centralized Bidirectional hybrid Acess network and also with remodulated ONUS and a coherent receiver OLT ,various technique to control PAPR(peak to average power ratio),different types of modulation methods with pre-emphasis technique, an idea abot MAMSK-OFDM technology for next generation,putting the Doppler shift into usuage into intelligent transportation system,comparison between different types of modulation scheme and OFDM,directly modulated signal transmission over fiber in WDM –PON
S. H. Lee 2011 (et.Al) a new low-cost solution using orthogonal transmission of non-return-to zero and carrierless-amplitude-and-phase format data to realize a coarse OFDM transmission system. demonstrated at 37.5Gb/s.When lower speed laser drive electronics were used low cost future Ethernet system will developed.This new system had used 2 ASK namely NRZ and Quadrature carrierless amplitude and phase codes ,which have frequency distribution .Link capacity increased due to NRZ and CAP signals. This scheme was simpler and easy to implement. It allowed the increase of link Bandwidth using existing Ethernet grade component.[1]
A. K. Mishra1 2011 (et.Al) The generation of comb spectra was essential for optical OFDM transmitters. The dual drive Mach-Zehnder at one arm modulator with a 12.5 GHz sinusoidal and at the other arm with a 25 GHz sinusoidal separately. with 12.5 GHz spacing Up to eight optical subcarriers and a spectral flatness of < 1 dB could be produced.Lower drive voltage swings were required than other techniques. The modulated optical subcarrier fields are
MULTIPLEXING
Amanpreet Kaura, Kamaljit Singh Bhatiab a,b Department of Electronics Engineering, Sri Guru Granth Sahib World University,
Fatehgarh Sahib, India
Corresponding Author:kamalbhatia.er@gmail.com
To design optical OFDM using low bandwidth electronics and optoelectronics components,also low loss comb-line combiner using the IFFT,lightware centralized Bidirectional hybrid Acess network and also with remodulated ONUS and a coherent receiver OLT ,various technique to control PAPR(peak to average power ratio),different types of modulation methods with pre-emphasis technique, an idea abot MAMSK-OFDM technology for next generation,putting the Doppler shift into usuage into intelligent transportation system,comparison between different types of modulation scheme and OFDM,directly modulated signal transmission over fiber in WDM –PON
S. H. Lee 2011 (et.Al) a new low-cost solution using orthogonal transmission of non-return-to zero and carrierless-amplitude-and-phase format data to realize a coarse OFDM transmission system. demonstrated at 37.5Gb/s.When lower speed laser drive electronics were used low cost future Ethernet system will developed.This new system had used 2 ASK namely NRZ and Quadrature carrierless amplitude and phase codes ,which have frequency distribution .Link capacity increased due to NRZ and CAP signals. This scheme was simpler and easy to implement. It allowed the increase of link Bandwidth using existing Ethernet grade component.[1]
A. K. Mishra1 2011 (et.Al) The generation of comb spectra was essential for optical OFDM transmitters. The dual drive Mach-Zehnder at one arm modulator with a 12.5 GHz sinusoidal and at the other arm with a 25 GHz sinusoidal separately. with 12.5 GHz spacing Up to eight optical subcarriers and a spectral flatness of < 1 dB could be produced.Lower drive voltage swings were required than other techniques. The modulated optical subcarrier fields are
References: 6. 2138 JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 29, NO. 14, JULY 15, 2011 Direct-Detection Optical OFDM Transmission System With Pre-Emphasis Technique by Yang Gao, Jianjun Yu, Member, IEEE, OSA, Jiangnan Xiao, Zizheng Cao, Fan Li, and Lin Chen 7 15. 118 IEEE PHOTONICS TECHNOLOGY LETTERS, VOL. 22, NO. 2, JANUARY 15, 2010 40-Gb/s Time-Division-Multiplexed Passive Optical Networks Using Downstream OOK and Upstream OFDM Modulations by Chien-Hung Yeh, Chi-Wai Chow, and Chih-Hung Hsu 1Institute of Photonics Technology, Jinan University, Guangzhou, 510632, China, tlzh88@jnu.edu.cn (2Department of Electronic Engineering, Jinan University, Guangzhou, 510632, China) (1) Department of Physics, Institute for Quantum Electronics, ETH Zurich, 8093 Zurich, Switzerland a.oehler@phys.ethz.ch