Patent ID: 7558309
Filing Date: 2009-07-07
Classification: H04B,H04J,H04L

Abstract:
1. The application method of the ultra-wide band wireless communication system using the spreading codes with zero cross correlation duration, the application method comprising steps of: the transmission signal generating process which generates transmission signal with zero correlation duration property to make cross correlation value of signals low or zero, using modulated data symbol value for users, spreading codes for users, bit period and chip period; the transmission process, which converts the generated signal to ultra-wide band signal and transmit; the transmission process, which transmits signals using Multi-band or Multi-Carrier method that divides the whole UWB frequency band to each channels as multiplication technique; the receiving process, which receives ultra wideband signal maintaining zero correlation duration property through multi-path calculate statistic vector and process the signal; wherein the length of the zero cross correlation duration is designed to cover the delay path length of the Multi-Path Interference (MPI), wherein the interference-free ultra-wide band wireless communication system further comprise the cancellation process of MPI signal using the property of zero cross correlation, when the major delay path length of the Multi-Path Interference (MPI) is 0.5×(the zero cross correlation −1).