Patent ID: 7848456

Claim:
A wireless data communication method between a transmitter device having a first wide band antenna for transmitting ultra wide band coded data signals, and a receiver device having a second wide band antenna for receiving direct path and multiple path coded data signals, wherein the method comprises the steps of: (a) defining transmitted data by one or more sequences of N pulses where N is an integer number higher than 1, wherein the arrangement of N pulses of each sequence represents encoding of data relating to the transmitter device; (b) the receiver device receiving the N pulses of one pulse sequence of direct path and multiple path coded data signals, wherein the N pulses are each processed in one of N corresponding reception time windows, wherein each of the N reception time windows is positioned in time as a function of a known theoretical arrangement of the N pulses of the signals transmitted by the transmitter device; and (c) carrying out, in the receiver device, an operation of adding the N windows in a coherent manner before data demodulation so that added pulse amplitude level is higher than noise amplitude level captured by the receiver device; (d) performing an operation of adding the N time windows before or after analogue-digital conversion of the analogue signals, and wherein the analogue signal pulses are sampled in the analogue-digital conversion stage by at least one sampling signal supplied by a signal processing unit, wherein the sampling signal has a frequency proportional to a frequency of a clock signal; and (e) calculating several absolute value maximum amplitude values for signals in time sub-windows of defined length T N , wherein each of the sub-windows is time shifted in relation to each other by a determined time interval from the start of the reception time window to the end of said time window.