Patent ID: 8908808

Claim:
An angle based demodulation method, comprising: a receiving device receiving a signal transmitted by a transmitting device; the receiving device processing the signal to produce a sequence of complex sample pairs (CSP 1 , CSP 2 , . . . , CSP N ), wherein each complex sample pair (CSP i ) has a corresponding angle A i , for i=1 . . . N, where N is a positive integer; the receiving device determining a set of two or more reference angle (RA) values; and the receiving device determining a set of bit values based on the angles corresponding to the sequence of complex sample pairs and the set of RA values, wherein each bit value included in the set of bit values corresponds to an adjacent pair of CSPs, wherein the step of determining the set of bit values comprises selecting a bit value to correspond to a particular pair of said CSPs (CSP i , CSP i+1 ) and wherein the step of selecting a bit value to correspond to said particular pair (CSP i , CSP i+1 ) of said CSPs comprises: determining a set of two or more cumulative angle error (CAE) values, the set of CAE values comprising a minimum CAE value that is associated with a particular bit value; determining the minimum CAE value; and selecting the particular bit value associated with the minimum CAE value to correspond to said particular pair (CSP i , CSP i+1 ) of said CSPs.