%0 Journal Article %T Op¨¦rateurs d'entrelacement et alg¨¨bres de Hecke avec param¨¨tres d'un groupe r¨¦ductif $p$-adique - le cas des groupes classiques %A Volker Heiermann %J Mathematics %D 2008 %I arXiv %X For $G$ a symplectic or orthogonal $p$-adic group (not necessarily split), or an inner form of a general linear $p$-adic group, we compute the endomorphism algebras of some induced projective generators \`a la Bernstein of the category of smooth representations of $G$ and show that these algebras are isomorphic to the semi-direct product of a Hecke algebra with parameters by a finite group algebra. Our strategy and parts of our intermediate results apply to a general reductive connected $p$-adic group. %U http://arxiv.org/abs/0804.4398v3