Umudike Journal of Engineering and Technology

In information theory and telecommunication engineering, Signal-to-Noise ratio is a crucial design objective in wired and wireless network applications. Signal-to-Noise (SNR) is used as a way to measure the quality of connection or services in networks. Signal-to-Noise ratio on a network need to be high, the higher the value, the better the signal strength and the quality of transmission. The wireless is based on IEEE802.11 and the wired on IEEE802.3 ethernet technologies. In this paper the Signal-to-Noise ratio (SNR) level is investigated in wired and wireless network using the networks Bit Error Rate (BER) as a basis for the investigations. The Delta State University E-library network infrastructure was used. Wireshark software was used to capture the network traffic statistics. The captured data were analyzed analytically and later modelled with Matlab Version R2016a. Our analytical, numerical and modelled results specifically showed that, the wired system has higher Signal-to-Noise ratio based on the mean statistical data of their, three transmission protocols (TCP, IPV4 and IPV6). The wired network has an overall average Signal to Noise Ratio (SNR) of 8.52dB and the wireless network has an overall average Signal to Noise Ratio (SNR) of 5.18dB.