Patent ID: 8576930
Filing Date: 2013-11-05
Classification: H04L

Abstract:
1. A receiver, comprising: an input stage configured to receive a coded signal transmitted over a wireless interface and to output a differential signal based on the received coded signal, wherein the received coded signal is coded by a pair of pulses comprising a first coding pulse having a polarity and a second coding pulse having a polarity opposite of the polarity of the first coding pulse and a same duration and a same absolute amplitude as the first coding pulse; and a decoder coupled to the input stage and configured to decode the differential signal, the decoder including: a triggering block capable of triggering the decoder when a value of the received coded signal is outside a logical hysteresis, the triggering block being configured to: compare a first signal component of the differential signal to a first threshold above a direct current component of the differential signal and to a second threshold below the direct current component of the differential signal; compare a second signal component of the differential signal to the first threshold and the second threshold; generate a plurality of decoding logic signals based on the comparisons; and selectively trigger decoding based on an order of the generated plurality of decoding logic signals, wherein the triggering block is configured to trigger decoding when the order of the plurality of decoding logic signals indicates at least one of: the first signal component is above the first threshold while the second signal component is below the second threshold at a first instant, and, within a period of time following the first instant, the first signal component is below the second threshold while the second signal component is above the first threshold; and the second signal component is above the first threshold while the first signal component is below the second threshold at the first instant, and, within the period of time following the first instant, the second signal component is below the second threshold while the first signal component is above the first threshold.