 splitting the first PN-modulated signal into multiple parts; and  splitting the second PN-modulated signal into multiple parts.  0. The method as in claim 0, wherein summing further comprises:  summing one of the multiple parts of the first PN-modulated signal with one of the multiple parts of the second PN-modulated signal to form a first summation signal.  0. The method as in claim 0, wherein summing further comprises:  summing a second one of the multiple parts of the first PN-modulated signal with a second one of the multiple parts of the second PN-modulated signal to form a second summation signal.  0. The method as in claim 0, further comprising:  generating an In-phase component and a Quadrature component of the first summation signal; and  generating an In-phase component and a Quadrature component of the second summation signal.  0. The method as in claim 0, further comprising:  generating a