Patent ID: 6266795
Filing Date: 2001-07-24
Classification: H03M

Abstract:
In an arrangement for generating data symbols for respective symbol intervals, said arrangement comprising a first redundancy encoder operative for encoding input bits associated with a particular one of the symbol intervals to generate an expanded group of first redundancy encoder output bits associated with said particular symbol interval, and a second redundancy encoder operative for encoding a predetermined number of said first redundancy encoder output bits to generate an expanded group of second redundancy encoder output bits associated with said particular symbol interval, and a mapper adapted to select a particular data symbol from a signal constellation for said particular symbol interval as a function of at least said expanded group of second redundancy encoder output bits, a method comprising the steps of:substituting at least one predefined bit for input of said second redundancy encoder for at least one symbol interval; andnot generating at least one first redundancy encoder output bit associated with said at least one symbol interval.