Angel Lozano, Antonia Maria Tulino, Sergio Verdú. Mercury/waterfilling: optimum power allocation with arbitrary input constellations. In Proceedings of the 2005 IEEE International Symposium on Information Theory, ISIT 2005, Adelaide, South Australia, Australia, 4-9 September 2005. pages 1773-1777, IEEE, 2005. [doi]
Abstract is missing.