Advanced signal processors for interference cancellation in baseband receivers
AssigneeIII Holdings 1, LLC
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.
Claims20
A method for cancelling interference from a received baseband signal, 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.
An apparatus comprising:
- a receiver;
- and
- at least one processor configured to:
- generate at least one composite interference vector (CIV) by combining estimates from interfering subchannels;
- generate a soft-cancellation operator;
- and
- perform a soft cancellation of a baseband signal received by the receiver to output an interference-cancelled signal.
A non-transitory computer-readable medium storing computer-readable program code that, when executed by at least one processor, causes the at least one processor to:
- generate at least one composite interference vector (CIV) by combining estimates interfering subchannels;
- generate a soft-cancellation operator;
- and
- perform a soft cancellation of a baseband signal received by the receiver to output an interference-cancelled signal.
Dependencies are inferred from the claim text.