Alokasi Daya Kirim pada Visible Light Communication menggunakan Algoritma Waterfilling

DIAH AYU LESTARI, ARFIANTO FAHMI, BRIAN PAMUKTI

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ABSTRAK

Peningkatan terhadap kebutuhan akses data membuat Visible Light Communication (VLC) menjadi alternatif media transmisi nirkabel yang efisien. Namun berdasarkan performansinya, VLC memiliki permasalahan data rate yang tidak merata diterima oleh User Equipment (UE). Dalam mengatasi permasalahan tersebut, penelitian ini menerapkan alokasi daya kirim dengan algoritma waterfilling yang mampu memberikan keadilan data rate setiap UE berdasarkan nilai kanal. Penelitian ini menggunakan kanal Line Of Sight (LOS) dengan 3 skenario berbeda. Kami menggunakan parameter validasi untuk mengukur setiap kinerja dengan nilai Signal Noise Ratio (SNR), data rate, fairness index dan efisiensi energi. Dari hasil simulasi menggunakan algoritma waterfilling, kami memperoleh nilai fairness index untuk data rate sebesar 100% namun tidak memiliki efisiensi daya. Dengan memodifikasi algorima waterfilling, terjadi penurunan fairness index, SNR serta data rate, tapi memberikan efisiensi energi LED hingga 9%. Dengan demikan, daya yang dipancarkan oleh LED memiliki lifetime yang lebih panjang dengan modified waterfilling.

Kata kunci: VLC, Power Allocation, Waterfilling, Fairness.

 

ABSTRACT

The increase in the need for data access makes Visible Light Communication (VLC) an alternative wireless transmission medium that is efficient. However, based on its performance, VLC has a data rate problem that is not evenly accepted by User Equipment (UE). In overcoming this problem, this study applies power allocation with waterfilling algorithm that is able to provide fair data rate for each UE based on channel value. This study uses the Line Of Sight (LOS) channel with 3 different scenarios. We use validation parameters to measure each performance using the Signal Noise Ratio (SNR) value, data rate, fairness index and energy efficiency. From the results of simulation using the waterfilling algorithm, we obtain a fairness index value for the data rate of 100% but does not have a power efficiency. By modifying the waterfilling algorithm, there is a decrease in the fairness index, SNR and data rate, but provide LED energy efficiency of up to 9%. Thus, the power emitted by the LED has a longer lifetime with modified waterfilling algorithm.

Keywords: VLC, Power Allocation, Waterfilling, Fairness.


Kata Kunci


Visible Light Communication; Power Allocation; Waterfilling; Fairness.

Teks Lengkap:

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Referensi


Abdelhady, A. M., Amin, O., Chaaban, A., Shihada, B., & Alouini, M. S. (2019). Downlink Resource Allocation for Dynamic TDMA-Based VLC Systems. IEEE Transactions on Wireless Communications, 18(1), 108–120.

Damayanti, T. N., & Putri, H. (2014). Sistem Komunikasi Serat Optik. Bandung: Herya Media.

Farabi, N. F., Hambali, A.,& Darlis, D. (2019). Communication Design and Simulation ACO OFDM for Visible Light Communication. Telkom University, 6(1), 995–1001.

Ghassemlooy, Z., Popoola, W., & Rajbhandari, S. (2017). Optical wireless communications: System and channel modelling with MATLAB®. Florida: CRC Press.

Muthaqien, A., Fahmi, A., & Andini, N. (2018). Optimasi Resource Allocation Menggunakan Algoritma Particle Swarm Optimization (PSO) Pada Sistem Long Term Evolution (LTE) Arah Uplink. Telkom University, 5(3), 5173–5179.

Pamukti, B., Vinsensius Sigit, W. P., Fahmi, A., Adriansyah, N. M., & Andini, N. (2019). Water-Filling Random Resource Allocation (W-FRRA) using NOMA for downlink LiFi system. Proceedings - 2019 IEEE Asia Pacific Conference on Wireless and Mobile, APWiMob 2019. (pp. 13-18).

Patterson, M. G. (1996). What is energy efficiency? Concepts, indicators and methodological issues. Energy Policy, 24(5), 377-390.

Praneeth Varma, G. V. S. S., Kumar, A., & Sharma, G. V. V. (2018, September 24). Resource Allocation for Visible Light Communication using Stochastic Geometry. 2018 11th International Symposium on Communication Systems, Networks and Digital Signal Processing, (pp. 1-6).

Sari, S. M., Fahmi, A., & Syihabuddin, B. (2015). Algoritma Pengalokasian Resource Block Berbasis Qos Guaranteed Menggunakan Antena MIMO 2x2 Pada Sistem LTE Untuk Meningkatkan Spectral Efficiency. Telkom University, 4(1), 6–8.

Sgora, A., Vergados, D. J., & Vergados, D. D. (2015). A survey of TDMA scheduling schemes in wireless multihop networks. ACM Computing Surveys, 47, 1-39.

Trihantoro, D. H., Darlis, D., & Putri, H. (2014). Implementasi Visible Light Communication (VLC) Untuk Pengiriman Teks. Seminar Nasional Teknologi Terapan, (pp. 1-2).

Wan, T., Luo-Kun, L., Xia, Z., & Chun-Xiao, J. (2017). A Resource Allocation Algorithm Combined with Optical Power Dynamic Allocation for Indoor Hybrid VLC and Wi-Fi Network. Proceedings - 2016 8th International Conference on Computational Intelligence and Communication Networks (CICN) 2016, (pp. 21–27).

Wang, Z., Wang, Q., Huang, W., & Xu, Z. (2017). Visible Light Communications Modulation and Signal Processing. New Jersey: Wiley.

Wijayanto, A., Sujatmoko, K., & Pamukti, B. (2019). Impact Of Device Orientation For Visible Light Communication In Closed Room. 2019 4th International Conference on Information Technology, Information Systems and Electrical Engineering (ICITISEE) 2019, (pp.131-135).

Xing, C., Jing, Y., Wang, S., Ma, S., & Poor, H. V. (2020). New Viewpoint And Algorithms For Water-Filling Solutions In Wireless Communications. IEEE Transactions on Signal Processing, 68, 1618–1634.




DOI: https://doi.org/10.26760/elkomika.v9i1.137

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ISSN (print) : 2338-8323 | ISSN (electronic) : 2459-9638

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Department of Electrical Engineering Institut Teknologi Nasional Bandung

Address: 20th Building  Institut Teknologi Nasional Bandung PHH. Mustofa Street No. 23 Bandung 40124

Contact: +627272215 (ext. 206)

Email: jte.itenas@itenas.ac.id________________________________________________________________________________________________________________________


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