Perceptual quality evaluation of speech signals transmitted under different wireless channel conditions




BPSK; 4QAM; MOS; BER; AWGN Channel; Rician Channel; Rayleigh Channel.


In communication services, the quality and integrity of the voice signal at the receiver is a relevant factor that telephone operators must consider. In this article, we study the impact of degradation that occurs in the transmission channel on the transmitted voice signal. Therefore, key parameters are used, such as the average opinion score (MOS) related to the voice signal and the bit error rate (BER), in order to qualitatively and quantitatively evaluate the speech signal in each scenario. A modulation simulation scenario is used, which considers the AWGN, Rician and Rayleigh fading channels, and two modulations: BPSK and QAM. These channels have different configuration parameters. Experimental results show that there are certain MOS quality index values ​​for each type of channel with a specific configuration, showing that for each transmission scenario there is a need for adaptations in the modulation-channel-gain combination to obtain better performance.


Affonso, E. T., Rosa, R. L., & Rodríguez, D. Z. (2018). Speech quality assessment over lossy transmission channels using deep belief networks. IEEE Signal Processing Letters, vol. 25, pp. 70–74, Jan.

Agrawal, T., & Srivastava, S. (2017). Compact mimo antenna for multiband mobile applications. Journal of Microwaves, Optoelectronics and Electromagnetic Applications (JMOe), vol. 16, p. 542–552, Jun.

Ahlem, B. L., Dadi, M. B., & Rhaimi, C. B. (2015). Evaluation of ber of digital modulation schemes for awgn and wireless fading channels. World Congress on Information Technology and Computer Applications (WCITCA), pp. 1–5, Jun.

Awon, N. T., Islam, M. A., Rahman, M. M., & Islam, A. Z. M. T. (2012). Effect of AWGN & fading (raleigh & rician) channels on BER performance of a wimax communication system. CoRR, vol. abs/1211.4294, Aug.

Borra, S. K., & Chaparala, S. K. (2013). Performance evaluation of ofdm system with rayleigh, rician and awgn channels. International Journal of Emerging Technology and Advanced Engineering, vol. 3, Mar.

Ghani, N., Dixit, S., & Wang T.S. (2000). On ip-over-wdm integration. IEEE Communications Magazine, vol. 38, pp. 72–84, Mar.

Kabir, M. H., Rahman, J., & Ullah, S. E. (2018). Secured voice frequency signal transmission in 5g compatible multiuser downlink mimo noma wireless communication system. International Journal of Networks and Communications, vol. 8, no. 4, pp. 97–105, Oct.

Kanthimathi, M., & Kavitha, C. (2011). Improved performance by ici cancellation in mimo-ofdm system. International Conference on Signal Processing, Communication, Computing and Networking Technologies, pp. 111–115, Jul.

Li, G., Zhang, Z., & Lu, Z. (2008). Adaptive hierarchical modulation over correlated mimo fading channels. 9th International Conference on Signal Processing, pp. 1920–1925, Oct.

Lien, S. Y., & Chen, K. C. (2011). Statistical traffic control for cognitive radio empowered lte-advanced with network mimo. IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS), pp. 80–84, Apr.

Mohammed, A. G. A. (2014). Performance evaluation of bpsk modulation-based spectrum sensing over wireless fading channels in cognitive radio. IOSR Journal of Electronics and Communication Engineering, vol. 9, pp. 24–28, Dec.

Mohammed, A. I., & Bilal, K. H. (2017). Impact of awgn, rayleigh and rician fadingchannels on ber performance of a cognitive radio network. International Journal of Scientific Engineering Research, vol. 8, pp. 1365–1368, Apr.

Nomura, Y., Mori, K., Naito, K., & Kobayashi, H. (2014). High efficient packet aggregation scheme for multi-rate and voip packet transmissions in next generation mu-mimo wlans. International Conference on Advanced Technologies for Communications (ATC 2014), pp. 517–521, Oct.

Ong, L. T., & Lambotharan, S. (2006). Variable rate variable power mimo system for integrated voice and data services. 10th IEEE Singapore International Conference on Communication Systems, pp. 1–5, Nov.

Ong, L. T., & Lambotharan, S. (2007). On the rate and power allocation for mimo based integrated voice and data transmission. IEEE 66th Vehicular Technology Conference, pp. 1762–1766, Oct.

Parida, P., Das, S. S., & Paul, S. (2013). Performance of voip in presence of mimo interference in ofdma (lte) networks. IEEE 77th Vehicular Technology Conference (VTC Spring), pp. 1–6, Jun.

Ramprashad, S. A., Pepin, C., & Kozat, U. C. (2006). Distortion tradeoffs of different layered speech and media transmission techniques over wireless mimo systems. Fortieth Asilomar Conference on Signals, Systems and Computers, pp. 1308–1315, Nov.

Rodríguez, D. Z., Pívaro, G. F., Rosa, R. L., Mittag, G., & Möller, S. (2018). Quantifying the quality improvement of mimo transmission systems in voip communication. 26th International Conference on Software, Telecommunications and Computer Networks (SoftCOM), pp. 1–5, Sep.

Rodríguez, D. Z., Silva, M. J., Silva, F. J. M., & Junior, L. C. B. (2018). Assessment of transmitted speech signal degradations in rician and rayleigh channel models. INFOCOMP Journal of Computer Science, vol. 17, pp. 23–31, Dec.

Rodríguez, D. Z., Rosa, R. L., Almeida, F. L., Mittag, G., & Möller, S. (2019). Speech quality assessment in wireless communications with mimo systems using a parametric model. IEEE Access, vol. 7, pp. 35719–35730, Mar.

Vidhya, K., & Kumar, K. S. (2013). Ber performance of awgn, Rayleigh and rician channel. International Journal of Advanced Research in Computer and Communication Engineering, vol. 2, pp. 2058–2067, May.

Vieira, L. F. (2005). Análise do efeito da propagação em canais com múltiplas entradas e múltiplas saídas (mimo) com base no traçado de raios. Master’s thesis, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, RJ.



How to Cite

RIBEIRO, D. A.; TAVARES, D. S.; SOUZA, P. H. M. de; SOUZA, P. G. M. de; GARCIA, H. V. S.; FURTINI, A. C. C.; ROSA, R. L.; RODRÍGUEZ, D. Z. Perceptual quality evaluation of speech signals transmitted under different wireless channel conditions. Research, Society and Development, [S. l.], v. 10, n. 9, p. e27610918053, 2021. DOI: 10.33448/rsd-v10i9.18053. Disponível em: Acesso em: 28 oct. 2021.



Education Sciences