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Proceedings IEEE 56th Vehicular Technology Conference
Closed-loop schemes optimizing power allocation can be applied if Channel Status Information (CSI) is available at both transmitter and receiver. However, CSI is never ideal and algorithms performance degrades rapidly when CSI is poor. In this contribution a MMSE cost function that takes into account channel uncertainty is proposed for MIMO systems with OFDM modulation. The derived algorithm is robust to channel estimation errors. A closed form solution is obtained for joint transmitter anddoi:10.1109/vetecf.2002.1040593 fatcat:2h6f2ujlfbac5c4pidotkj5xmu