PEMODELAN SISTEM KOMUNIKASI CAHAYA TAMPAK BERBASIS DCO-OFDM DENGAN VITERBI DECODER PADA MATLAB

Angga Pratama Putra
Syifaul Fuada
Trio Adiono

Abstract


Penggunaan sistem komunikasi cahaya tampak sebagai metode komunikasi alternatif selain RF didorong oleh beberapa faktor, salah satunya adalah penghematan energi karena sistem ini menggunakan satu devais yang sama untuk pencahayaan ruangan sekaligus komunikasi data yaitu LED. Penelitian ini bertujuan untuk memodelkan sistem komunikasi cahaya tampak berbasis multi-carrier modulation (yakni DCO-OFDM) dengan bantuan perangkat lunak MATLAB. Pada penelitian ini, sistem dimodelkan atas dua bagian yakni blok Digital Signal Processing (DSP) dan kanal optik. Blok DSP terdiri atas FFT, convolutional encoder, modulator-demodulator, interleaver-deinterleaver, dan synchronizer. Untuk error control coding (ECC) digunakan algoritma Viterbi decoder. Hasil penelitian menunjukkan bahwa frame DCO-OFDM telah berhasil didesain dan berdasarkan perhitungan matematis melalui pendekatan MATLAB, sistem VLC dapat bekerja dengan baik pada ruangan 5m x 5m x 3m, yakni BER = 0 untuk nilai minimum SNR = 10 dB, sementara nilai SNR tertinggi yang dapat dicapai adalah ~30 dB.


Keywords


komunikasi cahaya tampak; DCO-OFDM; MATLAB; viterbi decoder

Teks Lengkap:

PDF

Referensi


Adiono T, Pradana A, Fuada S. Rancang Bangun Sistem Komunikasi Cahaya Tampak dengan Modulasi 2-PWM berbasis Mikrokontroller. SISFO. 2018; 8(1): 1-18.

Ergul O, Dinc E, Akan OB. Communicate to Illuminate: State-of-the-art and research challenges for visible light communications. Physical Communication. 2015; 17: 72-85.

Cseh T, Rajbhandari S, Fekete G, Udvary E. Modulation Schemes. In: Chapter 4, Ghassemlooy Z, et al., editors. Visible Light Communications Theory and Applications. Boca Raton: CRC Press Taylor & Francis Group; 2017. p. 97.

Wu L, Zhang Z, Dang J, Liu H. Adaptive Modulation Schemes for Visible Light Communications. Journal of Lightwave Technology. 2015; 33(1): 117.

Adiono T. Perancangan Sistem Layer Fisik OFDM. Bandung: ITB Press; 2017.

Adiono T, Aska Y, Fuada S, Purwita AA. Design of an OFDM System for VLC with a Viterbi Decoder. IEIE Transaction on Smart Processing and Computing (SPC). 2017; 6(6): 455-465.

Adiono T, Aska Y, Purwita AA, Fuada S, Putra AP. Modeling OFDM system with Viterbi Decoder Based Visible Light Communication. Paper Presented at International Conference on Electronic, Information and Communication (ICEIC); Phuket, Thailand; 2017 Jan 11.

Viterbi Decoder v9.0 LogicCORE IP Product Guid [document on the internet]. USA; Xilinx Product Guide; 2014 [cited 2019 Mar 18]. Available from: https://www.xilinx.com/support/documentation/ip_documentation/viterbi/v9_0/pg027_viterbi_decoder.pdf

Ghassemlooy G, Khalighi, MA, Wu D. Channel Modelling. In: Chapter 3, Ghassemlooy Z, et al., editors. Visible Light Communications Theory and Applications. Boca Raton: CRC Press Taylor & Francis Group; 2017. p. 71-80.

Fuada S, Putra AP, Adiono T. Analysis of Received Power Characteristics of Commercial Photodiodes in Indoor LoS Channel Visible Light Communication. International Journal of Advanced Computer Science and Applications (IJACSA). 2017; 8(7): 164-172.

Adiono T, Armansyah RF, Salman AH, Fuada S. Design and Implementation of Analog Transceiver Circuit for Patient Monitoring System Based on OWC. In: Proceedings of the International Conference on Electrical Engineering and Computer Science (ICECOS); 2018 Oct 2-4; Bangka Island, Indonesia. New York: IEEE; 2018 [cited 2019 Mar 18]. p. 63-8. Available form: IEEE Xplore.

Medina MFG, Gonzales O, Rodriguez S, Martin IR. Timing Synchronization for OFDM-based Visible Light Communication System. In: Proceedings of Wireless Telecommunication Symposium; 2016 Apr 18-20; London, UK. New York: IEEE; 2016 [cited 2019 Mar 18]. p. 1-4.

Elgala H, Mesleh R, Haas H. Pricope B. Visible Light Wireless Communication based on White LEDs. In: Proceedings of 2007 IEEE 6th Vehicular Technology Conference (VTC); 2017 Apr 22-5; Dublin, Ireland. New York: IEEE; 2017 [cited 2019 Mar 18]. p. 2185-9.

Adiono T, Putra AP, Fuada S. Implementation of an OFDM System for VLC with a Decoder at the Register-Transfer Level. Unpublished.

Putra AP. Arsitektur System-on-Chip untuk Komunikasi Cahaya Tampak berbasis DCO-OFDM. M.Sc [thesis]. Bandung: Institut Teknologi Bandung; 2018.




DOI: https://doi.org/10.24176/simet.v10i2.3172

Article Metrics

Abstract views : 376| PDF views : 288

Refbacks

  • Saat ini tidak ada refbacks.


free hit counter View My Stats

Indexed by:

Dimensions logo

 

Flag Counter

Creative Commons License
Simetris : Jurnal Teknik Mesin, Elektro dan Ilmu Komputer is licensed under a Creative Commons Attribution 4.0 International License.

Dedicated to: