公开(公告)号：DE69314356T2

公开(公告)日：1998-03-26

申请号：DE69314356

申请日：1993-06-14

Applicant: IBM

Inventor： CHEVILLAT PIERRE ,  ELEFTHERIOU EVANGELOS ,  MAIWALD DIETRICH

IPC: G11B20/14 ,  G11B5/09 ,  G11B20/10 ,  H04L25/03 ,  H04L25/497

Abstract: PCT No. PCT/EP93/01500 Sec. 371 Date Jul. 20, 1995 Sec. 102(e) Date Jul. 20, 1995 PCT Filed Jun. 14, 1993 PCT Pub. No. WO94/29989 PCT Pub. Date Dec. 22, 1994The present application makes use of a novel adaptive noise-predictive partial-response equalization scheme for channels (30) exhibiting spectral nulls and/or near nulls. The noise-predictive partial-response (PR) equalizer employed in the different embodiments of the present invention consists of a linear PR equalizer (32) which shapes the channel response to a predetermined partial-response function, followed by a linear predictor. This scheme modifies the output sequence of said linear partial-response equalizer (32) by whitening the total distortion, i.e. by whitening the noise components and the residual interference components at said linear PR equalizer output, thereby achieving the best possible signal-to-noise ratio (SNR) before detection.

公开(公告)号：DE69314356D1

公开(公告)日：1997-11-06

申请号：DE69314356

申请日：1993-06-14

Applicant: IBM

Inventor： CHEVILLAT PIERRE ,  ELEFTHERIOU EVANGELOS ,  MAIWALD DIETRICH

IPC: G11B20/14 ,  G11B5/09 ,  G11B20/10 ,  H04L25/03 ,  H04L25/497

Abstract: PCT No. PCT/EP93/01500 Sec. 371 Date Jul. 20, 1995 Sec. 102(e) Date Jul. 20, 1995 PCT Filed Jun. 14, 1993 PCT Pub. No. WO94/29989 PCT Pub. Date Dec. 22, 1994The present application makes use of a novel adaptive noise-predictive partial-response equalization scheme for channels (30) exhibiting spectral nulls and/or near nulls. The noise-predictive partial-response (PR) equalizer employed in the different embodiments of the present invention consists of a linear PR equalizer (32) which shapes the channel response to a predetermined partial-response function, followed by a linear predictor. This scheme modifies the output sequence of said linear partial-response equalizer (32) by whitening the total distortion, i.e. by whitening the noise components and the residual interference components at said linear PR equalizer output, thereby achieving the best possible signal-to-noise ratio (SNR) before detection.