Methods for estimation and interference suppression for signal processing
First Claim
Patent Images
1. A system comprising:
- a front-end processor configured to track one or more active base stations, estimate powers for one or more base station pilots, and estimate one or more multipath channels from the one or more base stations to one or more mobile stations;
an estimation module configured to relate unknown user and noise powers to estimates of powers for the one or more base station pilots based on an average correlation matrix for the one or more multipath channels;
a quality estimator configured to generate one or more quality estimates for the one or more multipath channels based on the estimates of powers; and
an interference canceller configured to generate an interference-cancelled signal from the one or more multipath channels based on the one or more quality estimates.
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Abstract
A receiver in a CDMA system comprises a front end processor that generates a combined signal per source. A symbol estimator processes the combined signal to produce symbol estimates. An S-Matrix Generation module refines these symbol estimates based on the sub channel symbol estimates. An interference canceller is configured for cancelling interference from at least one of the plurality of received signals for producing at least one interference-cancelled signal.
265 Citations
19 Claims
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1. A system comprising:
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a front-end processor configured to track one or more active base stations, estimate powers for one or more base station pilots, and estimate one or more multipath channels from the one or more base stations to one or more mobile stations; an estimation module configured to relate unknown user and noise powers to estimates of powers for the one or more base station pilots based on an average correlation matrix for the one or more multipath channels; a quality estimator configured to generate one or more quality estimates for the one or more multipath channels based on the estimates of powers; and an interference canceller configured to generate an interference-cancelled signal from the one or more multipath channels based on the one or more quality estimates. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method comprising:
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tracking one or more active base stations; estimating power for one or more base station pilots; estimating one or more multipath channels from the one or more base stations to one or more mobile station; relating unknown user and noise powers to estimates of power for the one or more base station pilots based on an average correlation matrix for the one or more multipath channels; generating one or more quality estimates for the one or more multipath channels based on the estimates of powers; and generating an interference-cancelled signal from the one or more multipath channels based on the one or more quality estimates. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A non-transitory computer-readable storage medium comprising a computer program that, in response to being executed, results in a receiver:
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tracking one or more active base stations; estimating power for one or more base station pilots; estimating one or more multipath channels from the one or more base stations to one or more mobile station; relating unknown user and noise powers to estimates of power for the one or more base station pilots based on an average correlation matrix for the one or more multipath channels; generating one or more quality estimates for the one or more multipath channels based on the estimates of powers; and generating an interference-cancelled signal from the one or more multipath channels based on the one or more quality estimates. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification