Differential (De)Modulation for Orthogonal Bi-Pulse Noncoherent UWB

In this paper, we propose a novel noncoherent UWB (de)modulation system, which uses a pair of orthogonal pulses to convey information symbols. Same as the original noncoherent UWB, our approach remains operational even without timing and channel estimation. Moreover, due to the orthogonality between the received waveforms of the pulse pair, our approach results in a differential demodulator. This means that our approach does not need Viterbi decoding which is required by, even in the presence of timing error. Simulations are also carried out to corroborate our theoretical analysis.