Interference rejection by soft-windowing cir estimates based on per-tap quality estimates
AssigneeQUALCOMM Incorporated
InventorMichael L. McCloud
Life of this patent
Estimating the term…
Abstract
A channel impulse response (CIR) estimate associated with a communication channel may be processed by determining coefficient values that respectively correspond to taps of the CIR estimate, and multiplying the taps by the respectively corresponding coefficient values. The coefficient values are determined according to a soft decision technique. The resulting modified CIR estimate is used to demodulate a communication signal received via the communication channel.
Claims20
A method of processing a channel impulse response (CIR) estimate associated with a communication channel, comprising:
- determining coefficient values that respectively correspond to taps of the CIR estimate, wherein at least one of said coefficient values is between zero and a full scale value;
- multiplying said taps by the respectively corresponding coefficient values to produce a modified CIR estimate;
- and
- providing the modified CIR estimate for use in demodulating a communication signal received via the communication channel.
An apparatus for processing a CIR estimate associated with a communication channel, comprising:
- a processing portion configured to determine coefficient values that respectively correspond to taps of the CIR estimate, wherein at least one of said coefficient values is between zero and a full scale value, said processing portion further configured to multiply said taps by the respectively corresponding coefficient values to produce a modified CIR estimate;
- and
- an output coupled to said processing portion for providing the modified CIR estimate for use in demodulating a communication signal received via the communication channel.
An apparatus for processing a CIR estimate associated with a communication channel, comprising:
- means for determining coefficient values that respectively correspond to taps of the CIR estimate, wherein at least one of said coefficient values is between zero and a full scale value;
- means for multiplying said taps by the respectively corresponding coefficient values to produce a modified CIR estimate;
- and
- means for providing the modified CIR estimate for use in demodulating a communication signal received via the communication channel.
A computer program product that supports processing a CIR estimate associated with a communication channel, comprising:
- a computer-readable medium comprising:
- code for causing at least one data processor to
- determine coefficient values that respectively correspond to taps of the CIR estimate, wherein at least one of said coefficient values is between zero and a full scale value;
- multiplying said taps by the respectively corresponding coefficient values to produce a modified CIR estimate;
- and
- provide the modified CIR estimate for use in demodulating a communication signal received via the communication channel.
Dependencies are inferred from the claim text.