H
Hafiz M. Asif
Researcher at University of Engineering and Technology, Lahore
Publications - 45
Citations - 422
Hafiz M. Asif is an academic researcher from University of Engineering and Technology, Lahore. The author has contributed to research in topics: Visible light communication & Bit error rate. The author has an hindex of 11, co-authored 44 publications receiving 274 citations. Previous affiliations of Hafiz M. Asif include Taif University & King Fahd University of Petroleum and Minerals.
Papers
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Journal ArticleDOI
PDOA Based Indoor Positioning Using Visible Light Communication
TL;DR: The simulation results demonstrate that the positioning error is reasonably reduced compared with other existing approaches (algorithms) and shows that 1 – 2 cm positioning accuracy can be achieved in the presence of the noise.
Journal ArticleDOI
Closed-Form BER Expression for Fourier and Wavelet Transform-Based Pulse-Shaped Data in Downlink NOMA
TL;DR: A closed-form expression of the bit error rate (BER) for FFT-NOMA as well as wavelet-based NOMA (WNOMA) systems is presented and the theoretical and simulation BER results show that WnOMA outperforms F FT-NomA in additive white Gaussian noise.
Journal ArticleDOI
High Data Rate Discrete Wavelet Transform-Based PLC-VLC Design for 5G Communication Systems
TL;DR: A novel approach for modifying the modulation technique in accordance with the channel requirements of a hybrid PLC-VLC-based 5G communication systems is presented and discrete wavelet transform (DWT)-based orthogonal frequency division multiplexing (OFDM) is proposed to tune the physical parameters as per the hybrid channel characteristics.
Journal ArticleDOI
Optimization of Non-Orthogonal Multiple Access Based Visible Light Communication Systems
TL;DR: In this letter, convex optimization is applied to NOMA-based VLC system for downlink in terms of the bit error rate (BER) and the sum-rate.
Proceedings ArticleDOI
Single LED ceiling lamp based indoor positioning system
TL;DR: An ON/OFF switching frequency pattern of the authors' single LED ceiling lamp that allows the use of time difference of arrival (TDOA) based positioning algorithm and simulation results reveal that in terms of localization accuracy, circular arrangement of PDs outperforms all other considered configurations.