Adaptive channel estimation in a wireless communication system

Details Adaptive channel estimation in a wireless communication system Adaptive channel estimation in a wireless communication system

2006-01-10

2006-01-10

Pezzlo, John (Department: 2662)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S252000, C370S500000

Reexamination Certificate

active

06985469

ABSTRACT:
A method and circuit for adaptively estimating channel conditions of a pilot channel in a wireless communication system. The method includes estimating channel statistics of the pilot channel, and adaptively filtering the pilot channel in response to the estimated channel statistics. The estimation is performed by filtering a channel signal derived from the pilot channel to determine an estimated channel mean and an estimated channel covariance. In order to perform the adaptive filtering, the present invention partitions the pilot channel into one or more time slots and weights each time slot according to the channel statistics. Thus, an advantage of the present invention is that it automatically and continually updates the pilot filter parameters in order to optimize the pilot filter performance over a broad range of channel conditions.

REFERENCES:
patent: 4901307 (1990-02-01), Gilhousen et al.
patent: 5029186 (1991-07-01), Maseng et al.
patent: 5103459 (1992-04-01), Gilhousen et al.
patent: 5357574 (1994-10-01), Whitecar
patent: 5506865 (1996-04-01), Weaver, Jr.
patent: 5657420 (1997-08-01), Jacobs et al.
patent: 5687198 (1997-11-01), Sexton et al.
patent: 5698984 (1997-12-01), Little et al.
patent: 5764687 (1998-06-01), Easton
patent: 5799011 (1998-08-01), LaRosa et al.
patent: 6219344 (2001-04-01), Jones et al.
patent: 6317612 (2001-11-01), Farsakh
H. Andoh et al., “Channel Estimation Filter Using Time Multiplexed Pilot Channel for Coherent Rake Combining in DS-CDMA Mobile Radio,” IEICE Transactions on Communications, Institute of Electronics Information and Comm. Eng. Tokyo, JP, vol. E81-B, No. 7, Jul. 1, 1998 (pp. 1517-1525).
M.E. Rollins et al. “Error Performance Analysis of MLSE for Frequency-Selective Rayleighfading Channels with Kalman Channel Estimation,” International Conference on Communications (ICC), US, New York, IEEE, May 1, 1994, (pp. 321-326.

Affiliated with

Also associated with

Rating

Adaptive channel estimation in a wireless communication system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adaptive channel estimation in a wireless communication system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive channel estimation in a wireless communication system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3545240