Title:
信号依存型の分岐メトリック計算のためのフィルタ・タップ重みおよびバイアスを生成する方法および装置
Document Type and Number:
Japanese Patent JP5220266
Kind Code:
B2
Abstract:
A method and apparatus are provided for determining a plurality of filter tap weights or biases (or both) for a noise predictive filter used to generate one or more signal dependent branch metrics. A filter tap weight or filter bias (or both) are adaptively accumulated for each possible data condition. The data conditions may comprise, for example, each possible data pattern for a given data dependency length. The appropriate accumulated filter tap weight or bias to update can be selected based on a data condition associated with the current received data. The filter tap weights associated with a delay 0 tap can be adapted for each filter condition except for a single normalizing condition, whose corresponding delay 0 tap remains fixed.
Inventors:
Jonathan James Ashley
Keenan Terrell O'Brien
Richard Rausmeyer
Sammit Sangvu
Enqueue.
Kaichizan
Keenan Terrell O'Brien
Richard Rausmeyer
Sammit Sangvu
Enqueue.
Kaichizan
Application Number:
JP2005134246A
Publication Date:
June 26, 2013
Filing Date:
May 02, 2005
Export Citation:
Assignee:
Agia Systems Incorporated
International Classes:
G11B20/14; G11B20/10; H03H17/02; H03K5/159
Domestic Patent References:
| JP200385764A | ||||
| JP5197911A | ||||
| JP20028325A | ||||
| JP200345121A | ||||
| JP10112622A |
Attorney, Agent or Firm:
Okabe
Masao Okabe
Asahi Shinmitsu
Koji Yoshizawa
Masao Okabe
Asahi Shinmitsu
Koji Yoshizawa