Palavra-chave: SPHERICAL CODES

COSET CODES PERFORMANCE ANALYSIS GROUP CODES FLATTORUS HYPERBOLIC SIGNAL CONSTELLATION SLEPIAN CODES D-CHAIN ALGORITHM CORRESPONDENCE ANALYSIS PATTERN RECOGNITION RIEMANN SURFACE GEOMETRY OF GROUPS CODE CONSTRUCTION WIRETAP CHANNEL LATTICE LATTICES FINITELY GENERATED ABELIAN GROUPS CODES ON A FLAT TORUS GRAPH ANALOG SOURCE SOURCE CODING PERFECT CODES FLAT TORUS TORUS {P,Q} TESSELLATIONS OPTIMUM CODES GROUP TOPOLOGY SYMMETRY GROUPS GEOMETRICALLY UNIFORM CODES ISOMETRY CODES SUPERFÍCIE MODULAR OPTIMUM ENCODING