A memristor-based multicarrier UWB receiver

Memristors are employed in a receiver structure which can store a received UWB pilot waveform for demodulating and despreading the consecutive data signals. This paper shows that such a stored-reference receiver can be used for multicarrier signals as well. Multiple output samples are acquired and a post-processing step is introduced to separate the subcarrier signals, while the pre-processing in the memristor receiver (MRX) collects energy from resolvable multipath components. Hence a potential complexity reduction is achieved because frequency diversity is exploited without error correction decoding and without processing UWB signals at Nyquist rate. Performance simulations validate the concept of the multicarrier receiver and demonstrate the promising features of the MRX. However, a critical comparison to a single-carrier scheme indicates that the final gain may not justify the extra complexity.