Title:
RECEIVER AND COLLISION DETECTING METHOD
Document Type and Number:
WIPO Patent Application WO/2006/043312
Kind Code:
A1
Abstract:
A receiver of ultra-wide band communication system using Orthogonal Frequency Division Multiplexing. In the receiver, an FFT part (603) performs Fourier transformation of received signals to produce a demodulated data symbol sequence. A power measurement part (631) measures the total power of the pilot and guard subcarriers of the demodulated data symbol sequence to set a threshold value. A collision detection logic processing part (633) determines that a collision has occurred among symbols when the measured total power of the subcarriers is greater than the threshold value, while determining that no collision has occurred among symbols when the measured total power of the subcarrier is smaller than the threshold value. A time despread part (604) performs a time despreading of the demodulated data symbol sequence in accordance with a result of determination by the collision detection logic processing part (633).
Inventors:
Chew, Shane Cw
Eng, Yew Soo
Eng, Yew Soo
Application Number:
PCT/JP2004/015424
Publication Date:
April 27, 2006
Filing Date:
October 19, 2004
Export Citation:
Assignee:
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1006, Oaza Kadoma Kadoma-shi Osaka, 01, 57185, JP)
Chew, Shane Cw
Eng, Yew Soo
Chew, Shane Cw
Eng, Yew Soo
International Classes:
H04J11/00; (IPC1-7): H04J11/00
Attorney, Agent or Firm:
Washida, Kimihito (5th Floor, Shintoshicenter Bldg. 24-, Tsurumaki 1-chome Tama-shi Tokyo 34, 20600, JP)