Title:
OFDM RECEIVER
Document Type and Number:
Japanese Patent JP2002232383
Kind Code:
A
Abstract:
To suppress DC offset components having a great influence on the demodulation performance of an OFDM receiver by a simple constitution.
DC offset components generated by offset of data inputted to an A/D converter or offset of a reference voltage of the A/D converter, etc., are removed at the output stage of the A/D converter 24, using a digital filter 25. For this, an RF signal is converted to a normalized IF signal, further converted to a second IF signal by a mixer 22 and inputted to the A/D converter 24 to convert it into a digital signal in a two-stage IF constitution.
Inventors:
IWAO KAZUO
Application Number:
JP2001025000A
Publication Date:
August 16, 2002
Filing Date:
February 01, 2001
Export Citation:
Assignee:
NIPPON ELECTRIC ENG
International Classes:
H04J11/00; (IPC1-7): H04J11/00
Attorney, Agent or Firm:
Yanagi Kawa Shin