Spatial and temporal equalizer and equalization method

Details Spatial and temporal equalizer and equalization method Spatial and temporal equalizer and equalization method

2005-03-01

2005-03-01

Phu, Phuong (Department: 2631)

Pulse or digital communications

Equalizers

Automatic

C375S233000, C375S349000, C375S350000, C455S306000, C455S273000, C455S276100

Reexamination Certificate

active

06862316

ABSTRACT:
Outputs from respective elements of an array antenna21are demodulated, and the demodulated outputs are stored in storage means29. The demodulated outputs are multiplied by tap coefficients of adaptive array antenna, then the multiplied outputs are combined by combining means28, and the combined output is provided via a feed forward filter22to an adaptive equalizer23, wherein it is equalized to obtain a decision symbol. During reception of a training signal the tap coefficients of adaptive array antenna and tap coefficients of the adaptive equalizer23are subjected to convergence processing by tap coefficient calculating means24so that an error signal becomes small, and then tap coefficients of the feed forward filter22and the adaptive equalizer23are subjected to convergence processing by tap coefficient calculating means25so that an error signal becomes small. Thereafter, the convergence processing by the means24and25is repeated, during which a training signal stored in storage means29is used, results of the immediately preceding convergence processing are used as initial values, and it is decided by receiving quality estimating means26whether the error signal has become sufficiently small relative to the received signal power.

REFERENCES:
patent: 5646958 (1997-07-01), Tsujimoto
patent: 5689528 (1997-11-01), Tsujimoto
patent: 5870430 (1999-02-01), Pipon et al.
patent: 6115409 (2000-09-01), Upadhyay et al.
patent: 6118832 (2000-09-01), Mayrargue et al.
patent: 6166689 (2000-12-01), Dickey et al.
patent: 6240098 (2001-05-01), Thibault et al.
patent: 6243412 (2001-06-01), Fukawa
patent: 6243415 (2001-06-01), Pipon et al.
patent: 6317467 (2001-11-01), Cox et al.
patent: 6714584 (2004-03-01), Ishii et al.
patent: 0 604 956 (1994-07-01), None
patent: WO 9744855 (1997-11-01), None
Maw-Lin Leou, et al., IEEE Transactions on Vehicular Technology, vol. 49, No. 1, XP—000951729, pp. 1-10, “A Novel Hybrid Of Adaptive Array And Equalizer For Mobile Communications”, Jan. 2000.

Affiliated with

Also associated with

Rating

Spatial and temporal equalizer and equalization method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spatial and temporal equalizer and equalization method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spatial and temporal equalizer and equalization method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3438299