Patent ID: 8295371
Filing Date: 2012-10-23
Classification: H03G,H04B,H04L

Abstract:
1. An apparatus comprising: a delta-sigma analog-to-digital converter (ΔΣ ADC) to digitize an analog baseband signal comprising multiple signals on multiple frequency channels, and to generate an input sample stream for the multiple frequency channels, wherein the ΔΣ ADC has a variable reference voltage based on at least one of a bandwidth of the multiple frequency channels being received or a total number of the multiple signals being received; and at least one processor to digitally down convert the input sample stream for the multiple frequency channels to generate multiple down converted sample streams, one down converted sample stream for each frequency channel, and to digitally process the down converted sample stream for each frequency channel to generate an output sample stream for the frequency channel, wherein the at least one processor detects for saturation of the ΔΣ ADC, applies a first gain for the input sample stream if saturation of the ΔΣ ADC is detected, and applies a second gain smaller than the first gain for the input sample stream if saturation of the ΔΣ ADC is not detected.