A Tunable Energy Signal for Intensity Modulation and Direct Detection Systems: Theory, Simulations and Experiments

Vejandla, Kishore and Valluri, Sivaprasad and Kumar, Abhinav and et al, . (2020) A Tunable Energy Signal for Intensity Modulation and Direct Detection Systems: Theory, Simulations and Experiments. IEEE Photonics Journal. pp. 1-13. ISSN 1943-0647 (In Press)

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Abstract

In this paper, we propose a novel method to generate real signal for Visible Light Communication (VLC) systems without using traditional hermitian symmetry on the data symbols obtained using M-ary Pulse Amplitude Modulation (PAM) which is named as Auxiliary PAM (Ax-PAM). We mathematically analyse this method to generate a real signal with tunable energy using auxiliary symbols at the transmitter and the corresponding receiver. Simulation results for Bit Error Rate (BER) show better performance over conventional PAM Discrete Multi-Tone (PAM-DMT) and Asymmetrically Clipped Optical Orthogonal Frequency Division Multiplexing (ACO-OFDM) even under clipping distortion and also demonstrate the tunable energy for the proposed scheme. Furthermore, the proposed scheme is implemented on a VLC test bed designed using Universal Software defined Radio Peripheral (USRP). The experimental results for estimated Signal to Noise Ratio (SNR) and achieved BER for Ax-PAM outperforms PAM-DMT and ACO-OFDM.

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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 November 4, 2019; revised November 28, 2019; accepted December 4, 2019. Date of publication December 10, 2019; date of current version January 7, 2020. This work was supported in part by the Science and Engineering Research Board (SERB) under Grant EMR/2016/7687, New Delhi, in part by the Ministry of Human Resource Development (MHRD)-Government of India for awarding the Grant under SPARC 2019/249, and in part by the Department of Science and Technology (DST), Government of India under Grant TMD/CERI/BEE/2016/059(G). Corresponding author: Kishore Vejandla (e-mail: kishorevejandla@student.nitw.ac.in).

Uncontrolled Keywords:

Asymmetrically Clipped Optical Orthogonal Frequency Division Multiplexing (ACO-OFDM), Bit Error Rate (BER), Pulse Amplitude Modulated Discrete Multi-Tone (PAM-DMT), Visible Light Communication (VLC)

Subjects:

Electrical Engineering

Divisions:

Department of Electrical Engineering

Depositing User:

Team Library

Date Deposited:

24 Dec 2019 07:15

Last Modified:

25 Oct 2022 11:51

URI:

http://raiithold.iith.ac.in/id/eprint/7238