2. 4 GHz ISM band constitute of many Wireless Personal Area Network (WPAN) technologies such as INSTEON, IrDA, Wireless USB, Bluetooth, Z-Wave, ZigBee, Body Area Network and Wireless Local Area network (WLAN) technologies such as Wi-Fi. Among these vast technologies, Bluetooth, ZigBee and Wi-Fi are the most popular and preferred ones. Now-a-days these technologies are used in industrial as well as medical applications, to mention a few. Therefore performance analysis and improvement of these three technologies needs to be taken care of. This paper aims at evaluating the performance of these three leading technologies using two different parameters such as Bit Error Rate (BER) and Packet Error Rate (PER). When data is transmitted over a data link, there is a possibility of errors being introduced into the system. If errors are introduced into the data, then the integrity of the system may be compromised. As a result, it is necessary to assess the performance of the system, for which BER and PER provides an ideal way to achieve it. The BER and PER curves are plot against Signal-to-Noise Ratio (Es/No) for AWGN channels. The result highlights that when Signal-to-Noise ratio increases, BER and PER of the above mentioned technologies decreases. Also, the most preferred technology in WPAN i. e. ZigBee is having very low BER as compared to other technologies. The evaluation is performed using Simulink tool.

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ISM Band Bluetooth Wi- Fi ZigBee Interference PER BER Es/No.