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A Comprehensive Review of QAM-OFDM Optical Networks

A. Dhingra1 , S. Kumar2 , Payal 3 , D. Sharma4 , S. Dahiya5

Section:Research Paper, Product Type: Journal Paper
Volume-6 , Issue-11 , Page no. 811-817, Nov-2018

CrossRef-DOI:   https://doi.org/10.26438/ijcse/v6i11.811817

Online published on Nov 30, 2018

Copyright © A. Dhingra, S. Kumar, Payal, D. Sharma, S. Dahiya . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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IEEE Style Citation: A. Dhingra, S. Kumar, Payal, D. Sharma, S. Dahiya, “A Comprehensive Review of QAM-OFDM Optical Networks,” International Journal of Computer Sciences and Engineering, Vol.6, Issue.11, pp.811-817, 2018.

MLA Style Citation: A. Dhingra, S. Kumar, Payal, D. Sharma, S. Dahiya "A Comprehensive Review of QAM-OFDM Optical Networks." International Journal of Computer Sciences and Engineering 6.11 (2018): 811-817.

APA Style Citation: A. Dhingra, S. Kumar, Payal, D. Sharma, S. Dahiya, (2018). A Comprehensive Review of QAM-OFDM Optical Networks. International Journal of Computer Sciences and Engineering, 6(11), 811-817.

BibTex Style Citation:
@article{Dhingra_2018,
author = {A. Dhingra, S. Kumar, Payal, D. Sharma, S. Dahiya},
title = {A Comprehensive Review of QAM-OFDM Optical Networks},
journal = {International Journal of Computer Sciences and Engineering},
issue_date = {11 2018},
volume = {6},
Issue = {11},
month = {11},
year = {2018},
issn = {2347-2693},
pages = {811-817},
url = {https://www.ijcseonline.org/full_paper_view.php?paper_id=3248},
doi = {https://doi.org/10.26438/ijcse/v6i11.811817}
publisher = {IJCSE, Indore, INDIA},
}

RIS Style Citation:
TY - JOUR
DO = {https://doi.org/10.26438/ijcse/v6i11.811817}
UR - https://www.ijcseonline.org/full_paper_view.php?paper_id=3248
TI - A Comprehensive Review of QAM-OFDM Optical Networks
T2 - International Journal of Computer Sciences and Engineering
AU - A. Dhingra, S. Kumar, Payal, D. Sharma, S. Dahiya
PY - 2018
DA - 2018/11/30
PB - IJCSE, Indore, INDIA
SP - 811-817
IS - 11
VL - 6
SN - 2347-2693
ER -

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Abstract

Orthogonal Frequency Division Multiplexing (OFDM) is a FDM scheme that has the ability to cope with harsh channel conditions without using complex equalization filters. With the introduction of guard band, OFDM offers better orthogonality for the transmission channels affected by high frequency attenuations in copper wire, frequency selective fading and Narrow-Band (NB) interference due to multipath propagation. Each subcarrier is modulated employing a digital modulation scheme such as Quadrature Amplitude Modulation (QAM) with lower symbol rate in order to achieve higher data rates in comparison to single carrier modulation scheme for the given bandwidth. We have studied QAM-OFDM based optical networks in order to obtain higher data rates with lower Bit Error Rate (BER). Variants of OFDM have also been discussed along with its advantages and limitations to achieve the desired optimum performance in the optical networks. This paper presents a detailed study of M-ary QAM OFDM schemes and methods used to overcome effects of Inter Symbol Interference (ISI) and Inter Carrier Interference (ICI) with optimum utilization of system bandwidth.

Key-Words / Index Term

OFDM, ISI, ICI, QAM, Fast Fourier Transform (FFT), Inverse Fast Fourier Transform (IFFT), Discrete Fourier Transform (DFT), Peak to Average Power Ratio (PAPR), NB, Quality of Service (QoS), BER

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