Performance evaluation of OOK and BPSK modulation schemes for IR-UWB receiver using wide band LNA

Ultra wide band systems are considered as one of the most exciting technologies due to its capability of transmitting data over a wide frequency spectrum with very low power and high data rates. In any UWB receiver the low noise amplifier is the first stage. The LNA plays a crucial role in the whole reception chain. In this paper, we examine the performance of two different modulations techniques in UWB receiver with a wide band LNA. This LNA is designed by a TSMC 0.18 μm. The wide band LNA achieves the gain S21 of 12.5dB and a noise figure NF of 2.4 dB. In this work we evaluate the bit error rate BER of two different modulations with UWB Gaussian second derivative in the presence of the additive white Gaussian noise AWGN channel. The simulation results demonstrate that the OOK modulation technique provides better performance in comparison to the BPSK modulation. Keywords— wide band LNA, BER, BPSK, OOK, UWB