Bit-Error-Rate (BER) for modulation technique using Software defined Radio

Software-defined radio technologies are attractive for future mobile communication systems because of reconfigurable and multimode operation capabilities. The reconfigurable feature is useful for enhancing functions of equipment with out replacing hardware. Multimode operation is essential for future wireless terminals because a number of wireless communication standards will still coexist. The transceiver is modeled in Matlab and consists of a BPSK transmitter, an additive white Gaussian noise (AWGN) channel, and a BPSK receiver. In this paper, we have considered basics modulation techniques used in mobile and wireless systems. Based on this analysis a PSK modulation scheme for SDR is proposed to pick the constellation size that offers the best reconstructed signal quality for each average SNR. Simulation results of signal transmissions confirm the effectiveness of our proposed PSK modulation scheme. The performance of the modulation technique is evaluated when the system is subjected to noise and interference in the channel. Computer simulation tool, MATLAB, is used to evaluate Bit-Error-Rate (BER) for Software defined Radio.