Rodrigo Gusmão Cavalcante Reginaldo Palazzo Jr. Performance Analysis of M-PSK Signal Constellations in Riemannian Varieties. 191-203 2003 conf/aaecc/2003 AAECC http://dx.doi.org/10.1007/3-540-44828-4_21 db/conf/aaecc/aaecc2003.html#CavalcanteP03