Linear Block Coding and Discrete Wavelet Transform Based Audio Signal Transmission over AWGN and Rician Fading Channels

Abstract

Mobile communication has become an important part of our daily lives for voice communication, data sharing and access over the Internet. Mobile communication is an open network, so maintaining the privacy and reliability of data has always been anxiety. The reliability of the data against channel noise can be achieved by various error correction codes. The purpose of the channel coding process is to reduce the effect of some disruptive elements that the data is influenced in the transmission phase as much as possible. This procedure ensures that the data is delivered to the receiver with minimum error. In this study, a communication system was established in MATLAB environment for the transmission of five second audio signal. In this communication system, BER and MSE performances of four phase shift keying methods are obtained first.  In the second phase of the study, the AWGN and Rician fading channels were individually coded with four different LBC types. Performance evaluation of these coding types was done with BER and MSE criteria. In the last part of the study, it was investigated which wavelet family is suitable for which level, in order to ensure audio transmission over AWGN and Rician fading channels with the least possible error. Four wavelet transform families at different levels were applied to the audio signal for LBC (7, 4), LBC (15, 8), LBC (17, 8) and LBC (23, 12) encoded channels, and the Mean Squared Error (MSE) performances were compared.

Keywords

• Audio Signals,Channel Coding,Linear Block Coding,Wavelet Transform

References

1. N. Jacob, U. Sripati, “Bit Error Rate Analysis of Coded OFDM for Digital Audio Broadcasting System, Employing Parallel Concatenated Convolutional Turbo Codes”, in 2015 IEEE International Conference on Signal Processing, Informatics, Communication and Energy Systems (SPICES), IEEE, 2017. https://doi.org/10.1109/SPICES.2015.7091461
2. S. Faruque, Introduction to Channel Coding. In: Radio Frequency Channel Coding Made Easy, Springer Briefs in Electrical and Computer Engineering. Springer, Cham, 2016.
3. S. Dhaliwal, N. Singh, G. Kaur, "Performance analysis of convolutional code over different code rates and constraint length in wireless communication." I-SMAC (IoT in Social, Mobile, Analytics and Cloud)(I-SMAC), 2017 International Conference on. IEEE, 2017. https://doi.org/10.1109/I-SMAC.2017.8058393
4. J. Baviskar, A. Mulla, M. Gulati, P. Vaswani, A. Baaviskar, "LDPC based error resilient audio signal processing for wireless communication." Pervasive Computing (ICPC), 2015 International Conference on. IEEE, 2015. https://doi.org/10.1109/PERVASIVE.2015.7087164
5. T. Majoul, F. Raouafi, M. Jaidane, "Turbo decoding performance in non-Gaussian noise channels." Systems, Signals and Devices, 2009. SSD'09. 6th International Multi-Conference on. IEEE, 2009. https://doi.org/10.1109/SSD.2009.4956730
6. Md D. Haque, S. E. Ullah, Md R. Ahmed, "Performance evaluation of a wireless Orthogonal Frequency Division Multiplexing system under various concatenated FEC channel-coding schemes." Computer and Information Technology, 2008. ICCIT 2008. 11th International Conference on. IEEE, 2008. https://doi.org/10.1109/ICCITECHN.2008.4802994
7. K. K. Sidhu, G. Kaur. "Performance evaluation of multilevel linear block codes on Rayleigh fading channel." Electrical, Electronics, and Optimization Techniques (ICEEOT), International Conference on. IEEE, 2016. https://doi.org/10.1109/ICEEOT.2016.7755080
8. H. Lee, "Exact and asymptotic BER analysis of 2× 2 FRLR-STBC with BPSK modulation." Electronics Letters. 53(11) 2017: 720-722. http://dx.doi.org/10.1049/el.2016.4194

9. N. Romano, A. Scivoletto, D. Polap. "A real-time audio compression technique based on fast wavelet filtering and encoding." Computer Science and Information Systems (FedCSIS), 2016 Federated Conference on. IEEE, 2016.
10. P. E. Kudumakis, M. B. Sandler. "On the performance of wavelets for low bit rate coding of audio signals." Acoustics, Speech, and Signal Processing, 1995. ICASSP-95., 1995 International Conference on. Vol. 5. IEEE, 1995. https://doi.org/10.1109/ICASSP.1995.479498
11. G. Luo, "Ultra low delay wavelet audio coding with low complexity for real time wireless transmission." Intelligent Signal Processing and Communication Systems, 2005. ISPACS 2005. Proceedings of 2005 International Symposium on. IEEE, 2005. https://doi.org/10.1109/ISPACS.2005.1595516
12. A. K. Sinha, S. K. Dutta, B. Dev, Jaydipta, R. Ranjan, R. Kumari, "Wavelet based Speech Coding technique using median function thresholding." Electronics and Communication Systems (ICECS), 2014 International Conference on. IEEE, 2014. https://doi.org/10.1109/ECS.2014.6892538
13. S. S. Sarnin, N. F. Nairn, W. N. S. W. Muhamad, "Performance evaluation of phase shift keying modulation technique using BCH code, Cyclic code and Hamming code through AWGN channel model in communication system." Information Sciences and Interaction Sciences (ICIS), 2010 3rd International Conference on. IEEE, 2010. https://doi.org/10.1109/ICICIS.2010.5534715
14. Bhatti, Ali Tariq. "Cyclic channel coding algorithm for original and received voice signal at 8 khz using ber performance through additive white gaussian noise channel''." International journal of innovative science, engineering & technology (IJISET), 2(4), 843-852, 2015.
15. Bhatti, Ali Tariq, and Dr Jung H. Kim. "Implementation of reed-Solomon (rs) and cdma for signaling a voice through AWGN at 8 KHz sampling frequency using BPSK''." International journal of advent research in computer and electronics (IJARCE), 2(8), 13-27, 2015
16. E. Göse, “Zamanla değişen kanallarda turbo kodlama”, PhD Thesis, Yıldız Technical University, Institute of Science and Technology, 2005.
17. B. Sklar, Digital Communications Fundamentals and Applications Second Edition, Prentice Hall P T R Upper Saddle River, New Jersey 07458, 2001.
18. J. Proakis, M. Salehi, Fundamentals of Communication Systems. Pearson Education, 2007.
19. P. R. Kamala, R. V. S. Satyanarayana, "Optimal linear block code modeling and performance analysis over various channels for use in wireless communications", Emerging Trends in Engineering, Technology and Science (ICETETS), International Conference on. IEEE, 2016. https://doi.org/10.1109/ICETETS.2016.7603038
20. B. Sklar, "Rayleigh fading channels in mobile digital communication systems. I. Characterization." IEEE Communications magazine 35(7), 90-100, 1997. https://doi.org/10.1109/35.601747
21. G. L. Stüber, Principles of mobile communication. Norwell, Mass, USA: Kluwer Academic, 1996.
22. A. Mahmutoğlu, “Uzay Zaman Blok Kodlarını Kullanan Röleli Sistemlerin Genelleştirilmiş Sönümlemeli Kanallardaki Hata Performans Analizi”, Diss. M. Sc. Thesis, İstanbul Technical University, Institute of Science and Technology, 2009.
23. Adeli, Hojjat, Ziqin Zhou, and Nahid Dadmehr. "Analysis of EEG records in an epileptic patient using wavelet transform." Journal of neuroscience methods 123(1), 69-87, 2003. https://doi.org/10.1016/S0165-0270(02)00340-0
24. A. Haşiloğlu, "Dalgacık dönüşümü ve yapay sinir ağları ile döndürmeye duyarsız doku analizi ve sınıflandırma" Turkish Journal of Engineering and Environmental Sciences (Turk J Engin Environ Sci.) 25, 405-413. 2001.