Implementasi Filter Pre-Emphasis untuk Transmisi Sinyal Audio pada Sistem Komunikasi FBMC-OQAM

  • Anggun Fitrian Isnawati Institut Teknologi Telkom Purwokerto
  • Jans Hendry Institut Teknologi Telkom Purwokerto
Keywords: Filter Pre-emphasis, FBMC-OQAM, Bit Error Rate(BER), OFDM

Abstract

High speed data transmision demands broader bandwidth. This has an effect towards the limitation of frequencies spectrum allocation as well as interference. To solve this, multi carrier modulation is one of choices. Having better power spectral density compared to OFDM, the FBMC-OQAM has been chosen as the multi carrier modulation. The FBMC is equipped with Poly Phase Network filter, makes it able to achieve better PSD. Frequently used filter, which is pre-emphasis, is popular in speech processing that is possibly able to be extended in use. Pre-emphasis is also accompanied with de-emphasis filter, which is similar to FBMC. Pre-emphasis filter suppresses low frequency magnitudes and emphasizes higher frequency. By assuming that noise presents in higher frequency, an approachment to protect audio signal by itself is proposed. Random noise is broadband signal where frequencies can have ranges from lower to higher with smaller magnitudes compared to signal. By providing slots in audio higher frequency and magnitudes, random noise occupied those slots with relatively weak magnitudes then sent through the air. At the receiver, a de-emphasis filter invert the process to restore signal by de-emphasizing higher frequency and removing noise as well. The result shows better BER with this approachment. For example, when Eb/No was 13 dB, BER with and without pre-emphasis are approximately 0.0184 dB and 0.0187 dB, consecutively. It means there was 250 bits or approximately 32 points has been corrected. It shows that pre-emphasis can work along with PPN FBMC filter to gain better BER values.

References

W. Zhou dan W.H. Lam, “A Fast LMMSE Channel Estimation Method for OFDM Systems,” EURASIP J. Wirel. Commun. Netw., Vol. 2009, hal. 1–13, 2009.

S. Kaur, L. Kansal, G.S. Gaba, dan N. Safarov, “Survey of Filter Bank Multicarrier (FBMC) as an Efficient Waveform for 5G,” Int. J. Pure Appl. Math., Vol. 118, No. 7, hal. 45–49, 2018.

T.D. Ebinowen, Y.K. Abdulrazak, dan B.O. Tijani, “Optimization of MIMO System Using SIC-MMSE in AWGN Rayleigh Fading Channels,” Int. J. Eng. Sci. Res. Technol., Vol. 7, No. 9, hal. 146–153, Sep. 2018.

R. Hidayat, A.F. Isnawati, dan B. Setiyanto, “Channel Estimation in MIMO-OFDM Spatial Multiplexing Using Least Square Method,” International Symposium on Intelligent Signal Processing and Communications Systems (ISPACS), 2011, pp. 1–5.

S. Nedic dan R. Vallet, “Power and Spectral Efficiency Advantages of OFDM/OQAM Over OFDM/QAM for PHY in Wireless and Cognitive Radio Networks,” 18th TELFOR 2010, 2010, hal. 380-383.

W. Khrouf, M. Siala, dan F. Abdelkefi, “How Much FBMC/OQAM is Better than FBMC/QAM? A Tentative Response Using the POPS Paradigm,” Wirel. Commun. Mob. Comput., Vol. 2018, hal. 1-14, 2018.

S.C. Prema dan K.S. Dasgupta, “An Iterative Design with Variable Step Prototype Filter for Cosine Modulated Filter Bank,” Radioengineering, Vol. 25, No. 1, hal. 156–160, Apr. 2016.

J. Nadal, C.A. Nour, dan A. Baghdadi, “Design and Evaluation of a Novel Short Prototype Filter for FBMC/OQAM Modulation,” IEEE Access, Vol. 6, hal. 19610–19625, 2018.

E.W. Lee, “High-Speed Serial Data Link Design and Simulation,” Master Tesis, University of Illinois at Urbana-Champaign, Urbana, USA, 2009.

M. Bellanger, “FBMC Physical Layer : A Primer,” ICT-PHYDYAS Project, hal. 1-31, 2010.

I. McLoughlin, Applied Speech and Audio Processing with MATLAB Examples, New York, USA: Cambridge University Press, 2009.

J. Nadal, C.A. Nour, A. Baghdadi, dan H. Lin, “Hardware Prototyping of FBMC/OQAM Baseband for 5G Mobile Communication,” IEEE Int. Symp. on Rapid System Prototyping, 2014, hal. 135 - 141.

P. Kansal dan A. K. Shankhwar, “FBMC vs OFDM Waveform Contenders for 5G Wireless Communication System,” Wirel. Eng. Technol., Vol. 8, No. 4, hal. 59–70, 2017.

A.J. Ramadhan, “Implementation of 5G FBMC PHYDYAS Prototype Filter,” Int. J. of Applied Engineering Research, Vol. 12, No. 23, hal. 13476-13481, 2017.

Published
2019-11-20
How to Cite
Anggun Fitrian Isnawati, & Jans Hendry. (2019). Implementasi Filter Pre-Emphasis untuk Transmisi Sinyal Audio pada Sistem Komunikasi FBMC-OQAM. Jurnal Nasional Teknik Elektro Dan Teknologi Informasi, 8(4), 340-346. Retrieved from https://dev.journal.ugm.ac.id/v3/JNTETI/article/view/2559
Section
Articles