Patent ID: 8923445
Filing Date: 2014-12-30
Classification: H04L

Abstract:
1. A process of determining a soft value of a bit of a received symbol R, wherein said received symbol R corresponds to a symbol S in a constellation of symbols S each having a unique ordered pair of an in-phase I S component value and a quadrature Q S component value, said process comprising: receiving an electrical signal comprising a received symbol R, wherein said received symbol R comprises an in-phase I identifying a location sector of a symbol ring in said constellation, wherein said received symbol R is located in said location sector, and said location sector is one of a plurality of sectors of said symbol ring; selecting a limited subset of said symbols S of said constellation, wherein said limited subset is related to said location sector and comprises less than all of said symbols S of said constellation; and determining with ones of said symbols S of said limited subset a soft value of a jth bit of said received symbol R.