Time domain spreading method for ultra-wide band receiver, involves exchanging real part and imaginary part of transformed signals, and inversely outputting exchanged signals to obtain set of despreading received data signals

摘要

The method involves performing a fast Fourier transform (FFT) to obtain a series of transformed signals based on one of a series of multi-band orthogonal-frequency-division-multiplexing symbol signals (MB OFDM). Real part and imaginary part of the transformed signals are exchanged, and the exchanged signals are inversely outputted to obtain a set of despreading received data signals. An independent claim is also included for a time domain spreading apparatus of an ultra-wide band receiver.