Patent ID: 6438158
Filing Date: 2002-08-20
Classification: H04L

Abstract:
A method for signal point mapping in the context of a pulse code modulation (PCM) modem system, said method comprising the steps of:deriving a plurality of signal point maps, each having a plurality of signal points associated therewith; arranging signal points associated with at least one of said signal point maps in an ascending order such that signal points having relatively lower magnitudes are identified by relatively lower indices and signal points having relatively higher magnitudes are identified by relatively higher indices; obtaining a number of bits to be processed by a multiple modulus encoder; converting said number of bits in accordance with a multiple modulus conversion scheme to generate a plurality of index values associated with said signal point maps; applying said index values to said signal point maps to identify specific signal points within said signal point maps; and estimating a total average power associated with data transmission using said signal point maps, said estimating step utilizing a uniform probability of occurrence for all signal points associated with said signal point maps.