Patent ID: 7139332
Filing Date: 2006-11-21
Classification: H04L

Abstract:
1. A communication receiver, comprising: an analog front-end that is operable to receive an analog I stream and an analog Q stream; a digital processing unit that is communicatively coupled to the analog front-end; wherein the analog front-end includes a multiplexor and a single analog to digital convener that operate cooperatively to perform alternative digital sampling of the analog I stream and the analog Q stream thereby convening the analog I stream and the analog Q stream into a digital I stream and a digital Q stream; and the digital processing unit is operable to perform decimation and de-rotation of a digital sample of the digital I stream and the digital Q stream, the rotation being introduced during the analog to digital conversion of the analog I stream and the analog Q stream, the digital processing unit includes a digital signal processor, wherein the digital signal processor performs mathematical operations on the digital I stream and the digital Q stream to compensate for delay that occurs during the analog to digital conversion of the analog I stream and the analog Q stream thereby performing the de-rotation of the digital sample of the digital I stream and the digital Q stream.