Wireless receiver circuit and method

摘要

A circuit and a method are used estimate quality of the output of a wireless receiver. This quality measure is used to control the supply voltage and thereby provide power savings.

主权项

1. A wireless receiver circuit comprising:
a wireless receiver unit, coupled to receive a drive voltage, and configured to receive a plurality of digital samples and to output a set of encoded digital output bits; a forward error correction decoder coupled to receive the set of encoded digital output bits from the wireless receiver unit; a forward error correction encoder coupled to the forward error correction decoder and configured to re-encode output of the forward error correction decoder; a Hamming distance unit configured to output a measured Hamming distance between the set of encoded digital output bits from the wireless receiver unit and the re-encoded output of the forward error correction encoder; a voltage control unit configured to adjust the drive voltage to the wireless receiver circuit to a minimum voltage based on a difference between the measured Hamming distance and a target Hamming distance; and wherein the minimum voltage does not turn off the wireless receiver circuit.