UWB communication device and UWB communication method

Details UWB communication device and UWB communication method UWB communication device and UWB communication method

2005-07-15

2009-06-23

Fan, Chieh M (Department: 2611)

Pulse or digital communications

Pulse position, frequency, or spacing modulation

Reexamination Certificate

active

07551670

ABSTRACT:
The present invention provides a UWB communication device and a UWB communication method with which the communication speed can be improved, and with which accurate sending and receiving of data and a lower power consumption can be achieved. A communication device in accordance with the present invention employs a sending/receiving method of sending four bits of data within four cycles of a system clock, sending the four bits of data by correlating them in a 1-to-1 relationship with seven types of pulse waveforms with only one pulse during the first seven half-cycles and nine different types of pulse waveforms with two pulses during the first seven half-cycles of four cycles of the system clock, and at the receiving side demodulating the modulated input data by correlating the sixteen types of pulse waveforms that have been sent back to the four bits of data. Furthermore, when receiving, the width of the received pulses is set to a length of 1.5 cycles of the quadruple system clock, and phase shifts are detected and adjusted by sampling the received pulses with the rising edges of the quadruple system clock.

REFERENCES:
patent: 4201909 (1980-05-01), Dogliotti et al.
patent: 5640160 (1997-06-01), Miwa
patent: 6064697 (2000-05-01), Yoshikawa
patent: 6304600 (2001-10-01), Chiba
patent: 2001/0055353 (2001-12-01), Rybicki et al.
patent: 2002/0130944 (2002-09-01), Ema et al.

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