Patent ID: 8401120
Filing Date: 2013-03-19
Classification: H04L

Abstract:
1. A method comprising: determining, at a wireless network device, a phase of a first symbol of a received signal; determining, based on comparing the phase of the first symbol to a plurality of predefined phases, that the phase of the first symbol is within a predetermined threshold of a first of the plurality of predefined phases, wherein each of the plurality of predefined phases is associated with a corresponding each of a plurality of predefined symbols; demodulating the first symbol to a first of the plurality of predefined symbols associated with the first of the plurality of predefined phases based on said determining that the phase of the first symbol is within the predetermined threshold of the first of the plurality of predefined phases; determining a phase error that indicates a difference between the phase of the first symbol of the received signal and the first of the plurality of predefined phases; determining, based on comparing the phase error with a predetermined phase error threshold, whether the phase error is greater than the predetermined phase error threshold; and generating a symbol error notification in response to determining that the phase error is greater than the predetermined phase error threshold.