Title:
ORTHOGONAL FREQUENCY DIVISION MULTIPLEXED SIGNAL RECEIVING APPARATUS AND ORTHOGONAL FREQUENCY DIVISION MULTIPLEXED SIGNAL RECEIVING METHOD
Document Type and Number:
WIPO Patent Application WO/2002/017529
Kind Code:
A1
Abstract:
An OFDM signal apparatus that executes a filtering process of transmission line characteristic data interpolated in a symbol direction in accordance with a signal received from a filter count table according to a signal indicative of the length of a guard interval section so as to prevent an error from occurring in the transmission line characteristic data and to appropriately equalize received signal data. Besides, in order to swiftly switch the receiving channel by use of a simple structure, the OFDM signal apparatus determines, at the timing when an effective symbol section is switched to a guard interval section, the reception levels of two IF signals generated by down-converting RF signals transmitted via two different channels, and then select the signal transmitted via the channel of the higher level.
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Inventors:
OKUHATA YASUHIDE
SHINODA ATSUSHI
SHINODA ATSUSHI
Application Number:
PCT/JP2001/004954
Publication Date:
February 28, 2002
Filing Date:
June 12, 2001
Export Citation:
Assignee:
KENWOOD CORP (JP)
International Classes:
H04L25/02; H04L27/26; H04L25/03; (IPC1-7): H04J11/00
Domestic Patent References:
| WO1999001956A1 | 1999-01-14 |
Foreign References:
| JPH11163822A | 1999-06-18 | |||
| JP2000101496A | 2000-04-07 | |||
| EP0903898A2 | 1999-03-24 | |||
| EP0898381A2 | 1999-02-24 | |||
| JPS6423144U | 1989-02-07 | |||
| EP0998068A1 | 2000-05-03 |
Other References:
See also references of EP 1313242A4
Attorney, Agent or Firm:
Okabe, Masao (Fuji Bidg. 2-3 Marunouchi 3-chome Chiyoda-ku, Tokyo, JP)
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