MIMO decision feedback equalization from an H/sup /spl infin// perspective |
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Authors: | Erdogan AT Hassibi B Kailath T |
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Affiliation: | Electr. & Electron. Eng. Dept., Koc Univ., Istanbul, Turkey; |
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Abstract: | We approach the multiple input multiple output (MIMO) decision feedback equalization (DFE) problem in digital communications from an H/sup /spl infin// estimation point of view. Using the standard (and simplifying) assumption that all previous decisions are correct, we obtain an explicit parameterization of all H/sup /spl infin// optimal DFEs. In particular, we show that, under the above assumption, minimum mean square error (MMSE) DFEs are H/sup /spl infin// optimal. The H/sup /spl infin// approach also suggests a method for dealing with errors in previous decisions. |
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