Title:
WIRELESS RECEIVER AND DIGITAL DEMODULATING METHOD
Document Type and Number:
WIPO Patent Application WO/2006/033151
Kind Code:
A1
Abstract:
In a wireless receiver, an A/D converter (11) A/D converts an antenna input signal at a sampling rate of N·fs, and a DEMUX part (12) demultiplexes N A/D conversion outputs. Each of N quadrature demodulators (13a-13N), in which the carrier phase is shifted by 1/N·fs, uses the thus phase-shifted carrier to digital quadrature demodulate the respective one of the N DEMUX output data. A section averaging part averages the results of the digital quadrature demodulations to output a section average value for an under-sampling rate of fs. A band limit filter limits the band of the output signals of the section averaging part to input the thus limited output signals to a baseband processing part.
Inventors:
FUNAKUBO TOSHIAKI (JP)
Application Number:
PCT/JP2004/013921
Publication Date:
March 30, 2006
Filing Date:
September 24, 2004
Export Citation:
Assignee:
FUJITSU LTD (JP)
FUNAKUBO TOSHIAKI (JP)
FUNAKUBO TOSHIAKI (JP)
International Classes:
H04J1/00; H04L27/00; (IPC1-7): H04L27/00; H04J1/00
Foreign References:
| JP2000022535A | 2000-01-21 | |||
| JPH08162990A | 1996-06-21 | |||
| JP2000307531A | 2000-11-02 | |||
| JP2002354056A | 2002-12-06 |
Attorney, Agent or Firm:
Saito, Chimoto (Koei-Palace 202 14-10, Makuharihongo 1-chome,
Hanamigawa-ku, Chiba-sh, Chiba 33, JP)
Download PDF: