Time domain distribution method for UWB receivers, by performing fast Fourier transform, exchanging real and imaginary parts of transformed signals and generating inverted output of exchanged signals

摘要

A fast Fourier transform (FFT) (210) is performed to generate a series of transformed received signals Y(m), where Y(m) = Y1(m) + jYQ(m) and m is a whole number, the real and imaginary parts of the transformed signals are exchanged and an inverted output of the exchanged signals is generated to provide data receiving distribution signals X(m), where X(m) = Y(Q)(-m) + jY1(-m). The UWB (Ultra-Wide Band) receiver is designed to receive a series of MB OFDM (Multi-Band Orthogonal Frequency-Division-Multiplexing) signals sent by a UWB transmitter comprising a time domain distribution device for exchanging the real and imaginary parts of a signal S(n) = P1(n) + jPQ(n) in order to generate a second signal R(n) = PQ(n) + jP1(n), where n is a whole number, so that a series of symbol signals is received.