Balkan Journal of Electrical and Computer Engineering 2147-284X 2147-284X MUSA YILMAZ 10.17694/bajece.456774 Electrical Engineering Elektrik Mühendisliği Linear Block Coding and Discrete Wavelet Transform Based Audio Signal Transmission over AWGN and Rician Fading Channels Karagöl Serap ONDOKUZ MAYIS UNIVERSITY Yildiz Dogan 04 30 2019 7 2 104 114 09 03 2018 03 26 2019 Copyright © 2013, Balkan Journal of Electrical and Computer Engineering 2013 Balkan Journal of Electrical and Computer Engineering

Mobile communicationhas become an important part of our daily lives for voice communication, datasharing and access over the Internet. Mobile communication is an open network,so maintaining the privacy and reliability of data has always been anxiety. Thereliability of the data against channel noise can be achieved by various errorcorrection codes. The purpose of the channel coding process is to reduce theeffect of some disruptive elements that the data is influenced in thetransmission phase as much as possible. This procedure ensures that the data isdelivered to the receiver with minimum error. In this study, a communicationsystem was established in MATLAB environment for the transmission of fivesecond audio signal. In this communication system, BER and MSE performances offour phase shift keying methods are obtained first. In the second phase of the study, the AWGN andRician fading channels were individually coded with four different LBC types.Performance evaluation of these coding types was done with BER and MSEcriteria. In the last part of the study, it was investigated which waveletfamily is suitable for which level, in order to ensure audio transmission overAWGN and Rician fading channels with the least possible error. Four wavelettransform 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 theMean Squared Error (MSE) performances were compared.

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