CPC H04L 25/0238 (2013.01) [H04L 25/0204 (2013.01); H04L 25/0236 (2013.01); H04L 25/067 (2013.01); H04L 27/2636 (2013.01)] | 20 Claims |
9. A method comprising:
receiving radio frequency signals with a front end circuit of a wireless device, and converting the radio frequency signals into frequency domain data;
determining, in a channel estimation circuit of receiver of the wireless device, and based on the frequency domain data, a plurality of channel estimates within an evaluation window having a plurality of frequency carriers including a first frequency carrier, each of the plurality of channel estimates for one of the plurality of frequency carriers;
calculating, in a calculation circuit of the receiver, a plurality of metrics for each of the plurality of frequency carriers using at least some of the plurality of channel estimates; and
determining a soft decision for the first frequency carrier based at least in part on the plurality of metrics; and
performing coherent demodulation for a differentially encoded quadrature phase shift keying orthogonal frequency division multiplexing symbol using the soft decision.
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