On-line step-size calculation using signal power estimation...

Details On-line step-size calculation using signal power estimation... On-line step-size calculation using signal power estimation...

2005-12-05

2009-10-13

Corrielus, Jean B (Department: 2611)

Pulse or digital communications

Equalizers

C375S350000

Reexamination Certificate

active

07602844

ABSTRACT:
An efficient method for calculating the step-sizes for a frequency-domain equalizer of a discrete-multitone communications system using signal power estimation and tone grouping (SPE-TG) while on-line. The SPE-TG method is used to calculate a plurality of subchannel step-sizes which are then stored in a lookup table. When on-line, the method uses signal power estimation to select step sizes for each tone, and uses these step sizes for frequency domain equalization. The SPE-TG method simplifies the calculations necessary for frequency domain equalization, thereby saving significant hardware and/or processing resources. The SPE-TG method is reliable and robust, and does not depend upon assumptions about the line, location, or channel.

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On-Line Step-Size Calculation Using Signal power Estimation-Tone Grouping for Frequency-Domain Equalizer of DMT-Based Systems, Chih-Feng Wu, et al., 2004 IEEE Asia-Pacific Conference on Circuits and Systems, Dec. 6-9, 2004.

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