公开(公告)号：DE3852395T2

公开(公告)日：1995-05-24

申请号：DE3852395

申请日：1988-10-17

Applicant: IBM

Inventor： DOLIVO FRANCOIS B DR ,  OELCER SEDAT DR ,  RUENGELER ANDREAS DR ,  SCHOTT WOLFGANG HANS DR

IPC: G11B5/035 ,  G11B20/10 ,  G11B20/18 ,  H03H15/00 ,  H03H17/00 ,  H03H21/00 ,  H04B3/04 ,  H04L25/03 ,  H04L27/01

Abstract: The channel characteristics of magnetic-disk storage devices vary with track radius. An adaptive 3-tap transversal equalizer that compensates these variations for systems using partial-response signaling is presented. The equalizer coefficients are updated by applying a procedure that is related to the recursive least-squares algorithm. This new updating procedure does not require multiplications and is well suited for high-speed implementation. Results obtained by computer simulations and measurements with a prototype have shown that the proposed adaptive equalizer can effectively compensate variations in magnetic-disk channel characteristics with track radius.

公开(公告)号：DE3852395D1

公开(公告)日：1995-01-19

申请号：DE3852395

申请日：1988-10-17

Applicant: IBM

Inventor： DOLIVO FRANCOIS B DR ,  OELCER SEDAT DR ,  RUENGELER ANDREAS DR ,  SCHOTT WOLFGANG HANS DR

IPC: G11B5/035 ,  G11B20/10 ,  G11B20/18 ,  H03H15/00 ,  H03H17/00 ,  H03H21/00 ,  H04B3/04 ,  H04L25/03 ,  H04L27/01

Abstract: The channel characteristics of magnetic-disk storage devices vary with track radius. An adaptive 3-tap transversal equalizer that compensates these variations for systems using partial-response signaling is presented. The equalizer coefficients are updated by applying a procedure that is related to the recursive least-squares algorithm. This new updating procedure does not require multiplications and is well suited for high-speed implementation. Results obtained by computer simulations and measurements with a prototype have shown that the proposed adaptive equalizer can effectively compensate variations in magnetic-disk channel characteristics with track radius.