ملخص: A constant modulus (CM)-based channel estimation scheme for space-time block-coded MPSK and M-QAM transmission systems is derived. Exploiting the orthogonal structure of the space-time block coded transmission model, the analytical solutions to minimize the CM cost function are given for 2<superscript>k PSK (k > 2) and 2<superscript>2<superscript>k-QAM schemes, and used to derive the expressions for the CM-based channel estimators. Illustrative results on the performance are presented.

لغة: إنجليزية