Path search circuit, radio receiver and radio transmitter,...

Details Path search circuit, radio receiver and radio transmitter,... Path search circuit, radio receiver and radio transmitter,...

2006-08-08

2006-08-08

Milord, Marceau (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Distortion, noise, or other interference prevention,...

C455S562100, C455S506000, C455S063100, C455S067130, C455S114200, C455S143000, C455S296000, C375S147000, C375S347000, C375S340000, C375S343000, C342S383000, C342S380000, C370S342000

Reexamination Certificate

active

07088956

ABSTRACT:
A path search circuit according to the present invention has an orthogonal multi-beam forming section4for directional reception with a plurality of orthogonal multi-beams orthogonal one to another, correlation-operating sections61–6M for correlation-operating outputs of the orthogonal multi-beam forming section4with a known signal, weight multiplying sections81–8Nb for multiplying the output of the correlation-operating section61–6M by a weight converted into a beam space, delay profile generating sections91–9Nb for generating delay profiles from the output signals of the weight multiplying sections81–8Nb, and a path detecting section10for detecting a reception timing and arrival direction of arrival path from the delay profile. This path search circuit can enhance the accuracy of path direction detection by the use of a directional reception signal, and further reduce the direction dependence of path timing detection accuracy.

REFERENCES:
patent: 6191736 (2001-02-01), Yukitomo et al.
patent: 6466166 (2002-10-01), Nakagawa
patent: 6492958 (2002-12-01), Yoshida
patent: 6628698 (2003-09-01), Oda
patent: 6650692 (2003-11-01), Inoue et al.
patent: 6657590 (2003-12-01), Yoshida
patent: 6879624 (2005-04-01), Sano
patent: 1 069 708 (2001-01-01), None
patent: 1 161 001 (2001-12-01), None
patent: 1 170 878 (2002-01-01), None
patent: 1 265 377 (2002-12-01), None
patent: 2 349 045 (2000-10-01), None
patent: 10-107723 (1998-04-01), None
patent: 2001-086049 (2001-03-01), None
patent: 2001-345747 (2001-12-01), None
“Unitary ESPRIT: How to Obtain Increased Estimation Accuracy with a Reduced Computational Burden,” by M. Haardt, et al., pp. 1232-1242, IEEE Transactions on Signal Processing, vol. 43, No. 5, May 1995.
“Sensor-Array Calibration Using a Maximum-Likelihood Approach,” by B. Chong, et al., pp. 827-835, IEEE Transactions on Antennas and Propagation, vol. 44, No. 6, Jun. 1996.
T. Inoue et al. “Two-Dimensional Rake Reception Scheme for DS/CDMA Systems In Beam Space Digital Beam Forming Antenna Configuration”, IEICE Transactions on Communications, Institute of Electronics Information and Comm. Eng., Tokyo, JP, vol. E81-B, No. 7, Jul. 1, 1998, pp. 1374-1383.
European Search Report corresponding to application No. EP 03 00 7867 dated Nov. 27, 2003.

Affiliated with

Also associated with

Rating

Path search circuit, radio receiver and radio transmitter,... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Path search circuit, radio receiver and radio transmitter,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Path search circuit, radio receiver and radio transmitter,... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3700669