Patent ID: 7106811
Filing Date: 2006-09-12
Classification: H04L

Abstract:
1. A method for correcting the phase and gain of data associated with a constellation pattern of a plurality of received individual symbols, the constellation pattern having a first quadrant union including a first quadrant and a third quadrant, and a second quadrant union including a second quadrant and a fourth quadrant, the method comprising: (a) dividing each individual symbol into real and imaginary symbol components; (b) determining the signs of the real and imaginary symbol components; (c) determining whether the individual symbol is associated with the first quadrant union or the second quadrant union based on the signs determined in step (b); (d) determining the absolute values of the real and imaginary symbol components; (e) creating a first sum of the absolute values of the real symbol components determined in step (c) as being associated with the second quadrant union and the absolute values of the imaginary symbol components determined in step (c) as being associated with the first quadrant union; (f) creating a second sum of the absolute values of the real symbol components determined in step (c) as being associated with the first quadrant union and the absolute values of the imaginary symbol components determined in step (c) as being associated with the second quadrant union; (g) determining a sum ratio m by dividing the first sum by the second sum; (h) performing a predetermined function on the sum ratio m to determine a phase adjustment value θ; (i) determining a gain adjustment value G by adding the first and second sums together; (j) creating a complex number based on the phase adjustment value θ and the gain adjustment value G; and (k) multiplying each of the received individual symbols by the created complex number to provide corrected constellation pattern data.