Non linearity mitigation and dispersion reduction using Bussgang theorem, modified MSE and improved MLE equalizers

Radio over fiber technology based backhaul technology based 5 G system support the broad band services. Because of its low attenuation, large capacity and low operational cost Radio-over-fiber (ROF) technology is used. In this paper, generalized frequency division multiplexing based millimeter wave...

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Bibliographic Details
Published in:Microprocessors and microsystems 2019-09, Vol.69, p.35-42
Main Authors: Mathews, Asish B, Glan Devadhas, G.
Format: Article
Language:English
Subjects:
Computer simulation
Equalizers
Error reduction
Fiber technology
Frequency division multiplexing
Generalized Frequency Division Multiplexing (GFDM)
Linearity
Maximum Likelihood Equalizer (MLE)
Mean square errors
Millimeter waves
Minimum Mean Square Error (MMSE)
Nonlinearity
Operating costs
Optical communication
Pulse shaping filters
Radio attenuation
Standard Single Mode Fiber (SSMF) and MZM
Wireless networks
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Summary:Radio over fiber technology based backhaul technology based 5 G system support the broad band services. Because of its low attenuation, large capacity and low operational cost Radio-over-fiber (ROF) technology is used. In this paper, generalized frequency division multiplexing based millimeter wave is used to deliver the optical signals in wireless networks. This paper mainly focuses on reducing dispersion and non-linearity effects. For reducing the non-linearity modified minimum mean square error equalizer is implemented and it minimizes the mean square error, for reducing the dispersion effect Improved Maximum Likelihood equalizer (MLE) technique is used. The performance of GFDM is analyzed by computing the throughput and various parameters that affect the capacity of the system. The obtained simulation results proved that the proposed technique performs much better than conventional techniques.
ISSN:0141-9331
1872-9436
DOI:10.1016/j.micpro.2019.05.014