par Rottenberg, François 
;Horlin, François ;Kofidis, Eleftherios;Louveaux, Jérôme
Référence (19-20 May, 2016: Louvain-la-Neuve, Belgium), Proc. of the 37th WIC Symposium on Information Theory in the Benelux, WIC
Publication Publié, 2016-05
;Horlin, François ;Kofidis, Eleftherios;Louveaux, JérômeRéférence (19-20 May, 2016: Louvain-la-Neuve, Belgium), Proc. of the 37th WIC Symposium on Information Theory in the Benelux, WIC
Publication Publié, 2016-05
Publication dans des actes
| Résumé : | This paper⇤ addresses the design of MSE-optimal preambles for multicarrier channelestimation under a maximum likelihood or minimum mean squared error criterion.The derived optimality condition gives insight on how to allocate the powerof the pilots that compose the preamble. While many papers show that equispacedand equipowered allocation is optimal, the generalized condition demonstratesthat there exist many different configurations that offer the same optimalperformance. Furthermore, the condition applies not only to maximum likelihoodbut also to minimum mean squared error channel estimation. An application ofthe generalized condition in the presence of inactive subcarriers (virtual subcarriersproblem) is shown such that a non equispaced allocation can achieve thesame optimal performance as if an equispaced one could be used. |
