Abstract: An apparatus and method for transmitting and/or receiving ultra wideband (UWB) signals using differential phase shift keying (DPSK). A UWB transmitter includes a DPSK conversion unit for converting a first bitstream (data stream) by DPSK into a second bitstream, a modulation unit for generating UWB wavelet series based on the second bitstream, allowing the phase difference to be 180 degrees between the bit of 0 and the bit of 1, and an RF module for transmitting the generated UWB wavelet series through a wireless channel. A UWB receiver includes an RF module for receiving UWB wavelet series transmitted through a wireless channel, a time delay unit for delaying the UWB wavelet series received though the RF module for time period corresponding to an inter-pulse space, and a demodulation unit for demodulating data stream based on a correlation of the UWB wavelet series received through the RF module and the delayed UWB wavelet series passing through the time delay unit.

Abstract: A method for ultra wideband (UWB) wireless communication using channel information. The method comprises the steps of extracting a first channel information including information to generate UWB signals by demodulating received UWB signals and performing channel decoding, generating UWB signals by performing channel coding and modulation according to the first channel information, and transferring the generated UWB signals.

Abstract: An ultra wideband (UWB) transceiver and a UWB signal transmitting and receiving method are provided, wherein data transmission can be efficiently performed according to channel condition by forwarding channel information obtained from a received signal to a data transmitter and changing the data transmission scheme in the transmitter according to the received channel condition, contrary to a related art UWB transceiver. In the UWB transceiver, channel information is calculated from a UWB pulse signal received over a UWB channel so that a UWB channel condition can be predicted and a data transmission scheme is changed according to the calculated channel information, whereby information transmission can be efficiently made according to the UWB channel condition. Thus, there is an advantage in that efficient data transmission/reception can be made by changing the data transmission scheme in accordance with the UWB channel condition.