Patent ID: 7313166
Filing Date: 2007-12-25
Classification: H04B,H04J

Abstract:
1. A code-divisional access (CDMA) receiver for de-scrambling and de-spreading a received signal that was scrambled by a complex scrambling code into a first integrator input and a second integrator input, the received signal having in-phase and quadrature components, wherein the first integrator input and the second integrator input estimate first and second communication signals that were scrambled by first and second scrambling codes, respectively, the CDMA receiver comprising: a summer for producing a sum signal by adding the in-phase and quadrature components of the received signal; a substractor for producing a difference signal by computing the difference between the in-phase component and the quadrature components of the received signal; a selector for selecting one of the sum and difference signals to be an imaginary component based on the complex scrambling code and for selecting the other one of the sum and difference signals to be a real component.