Patent ID: 7848391

Claim:
A method of cancelling interference induced by a coherent interference source in a spread spectrum receiver, the method comprising the steps of: quantifying first interference values induced by the coherent interference source in symbols on a first spread spectrum physical channel; calculating second interference values induced by the coherent interference source in symbols on a second spread spectrum channel from the first interference values; applying a correction value, derived from the second interference values, to the symbols on the second spread spectrum channel; determining a first cross-correlation between the coherent interference source and symbols received on the first spread spectrum channel; deriving a scaling factor from the first cross-correlation and an estimation of the symbol power from the first spread spectrum channel; determining a second cross-correlation between the coherent interference source and symbols received on a second spread spectrum channel; deriving scaled second cross-correlation by applying the scaling factor to the second cross-correlation; applying the scaled cross-correlation to the symbols on the second spread spectrum channel; and storing scaled cross-correlation values in a buffer for application to subsequent symbols on the second spread spectrum channel when the power of the symbols on the first spread spectrum channel fails to exceed a predetermined threshold.