Patent ID: 8369385
Filing Date: 2013-02-05
Classification: H04B

Abstract:
1. A method for removing a selected signal from a received signal, the method comprising: receiving code division multiple access (CDMA) signals including a first signal and a second signal, the first signal being spread with a first spreading code and the second signal being spread with a second spreading code; despreading the received CDMA signals with a complex conjugate of the first spreading code to generate a first de-spread signal; despreading the received CDMA signals with a complex conjugate of the second spreading code to generate a second de-spread signal; generating a symbol value based on the second de-spread signal; generating a second signal strength based on the second de-spread signal; calculating a correlation of the second spreading code and a complex conjugate of the first spreading code; generating a cancellation signal component based on the correlation, the second signal strength, and the symbol value; and subtracting the cancellation signal component from the first de-spread signal.