Performance Analysis Under Double Sided Clipping and Real Time Implementation of DCO-GFDM in VLC Systems

Kishore, Vejandla and Valluri, Siva Prasad and Vakamulla, Venkata Mani and Sellathurai, Mathini and Kumar, Abhinav and et al, . (2021) Performance Analysis Under Double Sided Clipping and Real Time Implementation of DCO-GFDM in VLC Systems. Journal of Lightwave Technology, 39 (1). pp. 33-41. ISSN 0733-8724

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Abstract

In the context of visible light communications (VLC), DC biased optical generalized frequency division multiplexing (DCO-GFDM) is a recently emerged waveform relying on block based transmission and employs pulse shaping using a circularly rotating prototype filter. In this work, we analyze the bit error rate (BER) performance of DCO-GFDM under double sided clipping induced by front end light emitting diode (LED) transmitters. The effect of clipping on BER performance is studied under different biasing conditions for different prototype filters. Additionally, we experimentally verify the real time performance of DCO-GFDM using different pulses. Simulations are performed in MATLAB software and experiments are conducted in a Lab-view environment using hardware. Two independent universal software radio peripherals (USRP)s are utilized as transmitter and receiver boards. It is observed that the simulation results match well with the corresponding theoretical results. Meanwhile, the experimentally achieved results for error vector magnitude (EVM), the received constellations, and the received spectrum along with BER in different cases are presented for the validation of DCO-GFDM waveform and are compared with DCO orthogonal frequency division multiplexing (DCO-OFDM). © 1983-2012 IEEE.

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IITH Creators:

IITH Creators	ORCiD
Kumar, Abhinav	https://orcid.org/0000-0002-5880-4023

Item Type:

Article

Additional Information:

Manuscript received May 13, 2020; revised August 18, 2020; accepted September 16, 2020. Date of publication September 25, 2020; date of current version January 2, 2021. This work was supported in part by the Science and Engineering Research Board (SERB) (EMR/2016/7687), New Delhi, MHRD Gov. of India, under Grant SPARC (2019/249) and Grant SERB IMRC/AISTDF/CRD/2019/000178, in part by the Department of Science and Technology (DST), Govt. of India (Ref. No. TMD/CERI/BEE/2016/059(G)), and in part by the UK India Education and Research Initiative (UKIERI) 2016-17-058. (Corresponding author: Kishore Vejandla.) Vejandla Kishore and Venkata Mani Vakamulla are with the Department of Electronics, and Communication Engineering, National Institute of Technology, Warangal 506004, India (e-mail: kishorevejandla@student.nitw.ac.in; vvmani@nitw.ac.in).

Uncontrolled Keywords:

Bit error rate (BER); DC biased optical generalised frequency division multiplexing (DCO-GFDM); error vecor magnitudes (EVM); universal software radio peripherals (USRP); visible light communications (VLC)

Subjects:

Electrical Engineering

Divisions:

Department of Electrical Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

13 Sep 2022 06:52

Last Modified:

13 Sep 2022 06:52

URI:

http://raiithold.iith.ac.in/id/eprint/10554