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US 9,154,346 B2Granted
Method for reducing equalizer complexity in communication links
OwnerNikola Alicinventor
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Abstract
The present invention relates to a method of reducing equalizer complexity in communication systems, which also provides for reduced power dissipation. The method consists of reducing the number of channel responses expected by the equalizer by averaging sub-groups of all of the possible the channel responses chosen in a particular way.
Claims24
A method for complexity reduction of an equalizer in a communication system comprising the steps of:
- (a) generating a full-length channel response acquisition for symbol patterns equal in length to, or longer than the length of a channel spread;
- (b) reducing an effective set of channel responses by averaging subsets of appropriate responses;
- (c) using the reduced set of responses of step (b) as a model channel response for lower complexity equalization;
- and
- wherein the reduced complexity equalizer is based on the reduction of model channel responses number by a specific grouping of all possible full-length channel responses, whereas each sub-group is subsequently represented by a single response, corresponding to an optionally weighted average of all responses in a particular sub-group, wherein the division into the sub-groups is performed with respect to the symbol patterns producing the channel responses.
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