Title:
【発明の名称】アダプティブタイムディスクリートフィルタ
Document Type and Number:
Japanese Patent JP2591764
Kind Code:
B2
Abstract:
An adaptive time-discrete filter having an impulse response h(i) with i = 0,1,2,.... for forming a cancelling signal from synchronous data symbols (for example to cancel echoes or lagging intersymbol interference) comprises a transversal filter section (12) having adjustable coefficients Ci with i = 0,1,2,....,N-1 for realising the first N values h(i) of the impulse response as well as a recursive filter section (12') for realising the values h(i) with i = N,N+1,..... The recursive filter section (12') receives the input signal delayed over N-1 discrete time intervals from the adaptive filter as an input signal x(n) and forms an output signal y(n) according to the relationship: y(n) = CB[CAx(n-1) + y(n-1)] where CA is equal to the last adjustable coefficient CN-1 of the transversal filter section (12) and CB is a predetermined fixed coefficient.
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| JPH06197094 | DIGITAL MATCHED FILTER |
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Inventors:
KORUNERISU YAN UOODA
SHIMON YOHANESU MARIA TORU
SHIMON YOHANESU MARIA TORU
Application Number:
JP32303187A
Publication Date:
March 19, 1997
Filing Date:
December 22, 1987
Export Citation:
Assignee:
AA TEE EN TEE ANDO FUIRITSUPUSU TEREKOMYUNIKESHIONZU BV
International Classes:
H03H15/00; H03H21/00; H04B3/04; H04B3/23; (IPC1-7): H03H21/00; H04B3/23
Domestic Patent References:
| JP771029B2 | ||||
| JP7123237B2 |
Other References:
【文献】米国特許4920530(US,A)
【文献】欧州特許276511(EP,B)
【文献】欧州特許276511(EP,B)
Attorney, Agent or Firm:
Akihide Sugimura (1 outside)