Performance Evaluation of Binary Modulations through Wireless Body Area Network Channel

The error rate link performance has been evaluated and compared for efficient Rake receiver structures in low data rate WBAN (Wireless Body Area Network) channel. Rayleigh and Weibull distributions have been used for generating fading power profiles. This model is based on extensive measurements inside or on the surface of human body. The power profiles for WBAN channel have been generated. The bit error rate has been obtained by using different modulation schemes i.e. BPSK (Binary Phase Shift Keying), 2-PAM (Pulse Amplitude Modulation) and 2-BOK (Bi-orthogonal Keying). With the aid of these graphs, bit error rate performance evaluation of Rake receivers has been done. Through simulative investigations of Bit Error Rate (BER), it has been found from these three binary modulations; 2-PAM is suitable for WBAN channel. It has been observed that the performance of selective rake receiver (for optimum number of fingers) is better than partial rake receiver for all modulation schemes. General Terms WBAN channel Model, BPSK, 802.15.6.