Title:
A FREQUENCY-DOMAIN FILTER AND METHOD FOR REALIZING FREQUENCY-DOMAIN FILTERING
Document Type and Number:
WIPO Patent Application WO/2005/004345
Kind Code:
A1
Abstract:
The present invention discloses a frequency-domain filter, the frequency-domain filter includes control module, storage unit array, filter coefficient memory, data switch module, twiddle factor lookup module, output data combination module and at least a high-speed general operation unit; Said high-speed general operation unit may be time-division multiplexed by said storage unit array and data switch module, and providing the resources for completing data operation processing such as fast Fourier transform (FFT) , IFFT and frequency-domain filtering operation, etc. At the same time, the present invention also discloses a method for realizing frequency-domain filtering. The present invention overcomes some defects of traditional frequency-domain filtering configuration, and provides a realization scheme that the high-efficiency filter may change dynamicly based on FFT, IFFT and the filtering characteristic of said filter.
Inventors:
WU PEI (CN)
Application Number:
PCT/CN2004/000749
Publication Date:
January 13, 2005
Filing Date:
July 05, 2004
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
WU PEI (CN)
WU PEI (CN)
International Classes:
H03H17/02; (IPC1-7): H04B1/69
Foreign References:
| US5612978A | 1997-03-18 | |||
| US5606735A | 1997-02-25 | |||
| EP0639892B1 | 1998-07-08 | |||
| JP2001267974A | 2001-09-28 |
Attorney, Agent or Firm:
DEQI INTELLECTUAL PROPERTY LAW CORPORATION (No.1 Zhichun Road Haidian District, Beijing 3, CN)
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