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US 8,654,689 B2Granted
Advanced signal processors for interference cancellation in baseband receivers
AssigneeRambus Inc.
InventorsMichael L. McCloud, Vijay Nagarajan
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Abstract
An interference canceller comprises a composite interference vector (CIV) generator configured to produce a CIV by combining soft and/or hard estimates of interference, an interference-cancelling operator configured for generating a soft projection operator, and a soft-projection canceller configured for performing a soft projection of the received baseband signal to output an interference-cancelled signal. Weights used in the soft-projection operator are selected to maximize a post-processing SINR.
Claims17
A method for cancelling interference from a received baseband signal in a CDMA system, comprising:
- generating at least one composite interference vector (CIV) by combining estimates from interfering subchannels,
- generating a soft-cancellation operator, and
- performing a soft cancellation of the received baseband signal to output an interference-cancelled signal,
- wherein the estimates are derived from a Rake receiver.
1 more element
Dependencies are inferred from the claim text.