Patent ID: 7535975

Claim:
A method, using an electronic system, of processing a signal, comprising: determining a correlation between a labeled coordinate pair in a complex plane corresponding to an m-bit symbol, m=2n+1, n being any positive integer, where the total number of coordinate pairs is 2*2**2n, each label for each labeled coordinate pair comprising a different m-bit symbol, the labeled coordinate pairs representing a cross-constellation having a 2**2n square Gray labeled constellation forms a first symbol set having a particular bit position set to a same digital value centered on an origin of the complex plane and four sets of labeled coordinate pairs form a second symbol set having the particular bit position set to the compliment digital value each having (2**2n)/4 labeled coordinate pairs about sides of the 2**2n Gray labeled constellation, at least some of the four sets of labeled coordinate pairs having labels representing a reflection with a one bit difference of the 2**2n Gray labeled constellation up to a depth equal to a depth of the at least some of the four sets.