Error Detection Based on Superheterodyne Conversion and Direct Downconversion

Abstract

In one embodiment, a radio receiver has a first downconverter, a second downconverter, first and second analog-to-digital converters, and an error detector. The first downconverter downconverts a received RF signal into a first baseband-frequency signal using a first downconversion technique, and the second downconverter downconverts the received signal into a second baseband-frequency signal using a second downconversion technique, different from the first downconversion technique. The first and second analog-to-digital converters convert the first and second baseband-frequency signals into first and second baseband digital signals, respectively. The error detection logic detects errors in at least one of the first and second baseband digital signals based on a comparison of the first baseband digital signal to the second baseband digital signal.

Dependencies are inferred from the claim text.