Title :
The constellation-shaping algorithm using closed-form expressions for the number of ring combinations
Author_Institution :
Sos Pantrelimon 233, Bucharest, Romania
fDate :
10/1/1999 12:00:00 AM
Abstract :
The V.34 high-speed modem combines a number of advanced techniques including constellation shaping by shell mapping. This technique makes use of some functions representing the number of ring combinations with a given cost. In this correspondence, closed-form expressions for these functions are given and used in the constellation shaping by the shell-mapping algorithm
Keywords :
modems; V.34 high-speed modem; closed-form expressions; constellation-shaping algorithm; ring combinations; shell mapping; Closed-form solution; Communications Society; Constellation diagram; Cost function; Frequency modulation; Helium; Modems; Quadrature amplitude modulation; Signal mapping; Two dimensional displays;
Journal_Title :
Communications, IEEE Transactions on
