Channel estimation and/or equalization using repeated...

Details Channel estimation and/or equalization using repeated... Channel estimation and/or equalization using repeated...

2006-08-29

2006-08-29

Corrielus, Jean B. (Department: 2611)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C375S316000

Reexamination Certificate

active

07099409

ABSTRACT:
A novel approach of repeated adaptation is provided that can be applied to either one or both of channel estimation and/or equalization. From an incoming data packet that includes data and a training sequence, a modified data packet is generated that includes the data, the training sequence, and at least one additional copy of the training sequence. From the format of this modified data packet, the same training sequence can be used over and over again a desired number of times to perform channel estimation and subsequent calculation of equalizer tap coefficients. Alternatively, the same training sequence can be used over and over again a desired number of times to converge the equalizer coefficient taps directly without doing any preliminary channel estimation. Generally, either of these approaches can be characterized as a cyclic adaptation operation that provides improved performance without incurring any reduction in throughput of the communication channel.

REFERENCES:
patent: 5513215 (1996-04-01), Marchetto et al.
patent: 6426972 (2002-07-01), Endres et al.
patent: 6449320 (2002-09-01), Lindoff
patent: 2002/0060827 (2002-05-01), Agazzi
patent: 2002/0159546 (2002-10-01), Fulghum et al.

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