Ultra wideband communication system, method, and device with low noise pulse formation

摘要: An ultra-wide band (UWB) waveform generator and encoder for use in a UWB digital communication system. The multiples each data bit by an n-bit identifying code, (e.g., user code), resulting stream of bits corresponding to bit. This is referred as the original codeword. codeword passed onto generation that can be transmitted via antenna. made up shaped wavelets. In one embodiment, wavelets are bi-phase wavelets, uses two-stage differential mixer pulse generator. first stage combines pulses from with derivative derived output this wavelet, which used input second along also orthogonal represents inversion wavelet then on inverting amplifier before it By using two codewords at one-half chipping rate codeword, less power consumed. advantage system suppresses noise generated