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, . (2019) A Tunable Energy Signal for Intensity Modulation and Direct Detection Systems: Theory, Simulations and Experiments. IEEE Photonics Journal. p. 1. 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 CreatorsORCiD
Kumar, AbhinavUNSPECIFIED
Item Type: Article
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: 24 Dec 2019 07:15
URI: http://raiith.iith.ac.in/id/eprint/7238
Publisher URL: http://doi.org/10.1109/JPHOT.2019.2958836
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