Title:
EQUALIZATION FILTER AND DISTORTION COMPENSATING METHOD
Document Type and Number:
WIPO Patent Application WO/2008/075548
Kind Code:
A1
Abstract:
Provided is an equalization filter which solves a problem of limiting a range wherein
distortion of a transmission signal can be compensated. A measuring instrument
(104) measures a distortion quantity that characterizes distortion of the transmission
signal. A comparator (105a) generates a differential signal indicating a difference
between the transmission signal and a compensation signal. A delay device (105b)
delays a differential signal based on a distortion quantity measured by the measurement
instrument (104) and generates the compensation signal.
Inventors:
WADA, Shigeki (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 1088001, JP)
Application Number:
JP2007/073199
Publication Date:
June 26, 2008
Filing Date:
November 30, 2007
Export Citation:
Assignee:
NEC CORPORATION (7-1 Shiba 5-chome, Minato-ku Tokyo, 01, 1088001, JP)
日本電気株式会社 (〒01 東京都港区芝五丁目７番１号 Tokyo, 1088001, JP)
日本電気株式会社 (〒01 東京都港区芝五丁目７番１号 Tokyo, 1088001, JP)
International Classes:
H04B3/06; H03H21/00
Attorney, Agent or Firm:
MIYAZAKI, Teruo et al. (8th Floor, 16th Kowa Bldg. 9-20, Akasaka 1-chome,Minato-k, Tokyo 52, 1070052, JP)
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