Patent ID: 6178200
Filing Date: 2001-01-23
Classification: H04L

Abstract:
A method in a PCM modem having a frame containing a plurality of slots for providing a plurality of constellations, one for each slot, said method comprising:a) providing a first of said plurality of constellations with a first plurality of points which define a first constellation power for said first of said plurality of constellations, said first constellation power exceeding a predetermined average frame power limitation;b) providing a second of said plurality of constellations with a second plurality of points which define a second constellation power for said second of said plurality of constellations, said second constellation power being less than said predetermined average frame power limitation, wherein an average power of said plurality of constellations is less than or equal to said predetermined average frame power limitation; andc) transmitting indications of said plurality of constellations to another modem.