Comparative Evaluation of Bit Error Rate (BER ) in UWB

UWB (Ultra Wide Band) technology is a reliable transmission scheme for wireless communication with high data rates. It is called as impulse radio, impulse radar or carrier free ultra high resolution .UWB occupies a bandwidth of more than 25% of a center frequency, or more than 1.5GHz . It is a carrier free (base band) technique, which will greatly reduce the complexity and cost of transceiver. UWB can be characterized with ultra short duration pulses called monopulse which has excellent immunity in interference from sensitivity or multipath effects or fading problem. In this paper we examine different types of pulse shaping, modulation techniques and different types of demodulation are simulated and evaluated the BER(bit error rate) in the presence of the AWGN (additive white Gaussian noise ) . In this paper BER are Compared to examine the best modulation technique with monopulse.