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Patent Searching and Data


Title:
EQUALIZING METHOD AND EQUALIZER
Document Type and Number:
Japanese Patent JPH11163771
Kind Code:
A
Abstract:

To reduce calculation quantity by compensating for channel distortion to many carriers that are received, based on the overall subchannel characteristic values.

A channel estimating device 110 estimates a channel by using coordinate value that corresponds to a scatter pilot position and outputs channel characteristic value in the scattered pilot position. An adder 114 adds each carrier that is outputted from a zero inserting device 112 in a four symbol unit and outputs the channel characteristic of one symbol in a pilot position that has a three-subchannel cycle. A coefficient interpolating device 116 interpolates through the use of linear interpolation, constant interpolation or window FIR filter interpolation with channel characteristic value in the pilot position that has a three-subchannel cycle and outputs an interpolated coefficient. Furthermore, a frequency area equalizer 118 multiplies data that eliminates a protection band which is output from a protection band eliminating device 104 by an inverse number of the interpolated coefficient and outputs interpolated data.


Inventors:
AHN WON-ICK
Application Number:
JP22078498A
Publication Date:
June 18, 1999
Filing Date:
August 04, 1998
Export Citation:
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Assignee:
SAMSUNG ELECTRONIC
International Classes:
H04J11/00; H04B1/10; H04B1/76; H04B7/005; H04B7/01; H04L25/02; H04L25/03; H04L27/26; (IPC1-7): H04B7/005; H04B1/76; H04J11/00
Attorney, Agent or Firm:
Tadahiko Ito (1 outside)