Title:
受信装置、受信方法、プログラム、および、情報記録媒体
Document Type and Number:
Japanese Patent JP4374478
Kind Code:
B2
Abstract:
When a receiver (200) receives a signal transmitted from a transmitter, an A/D converter (204) converts the signal into a digital signal having two or more levels by A/D conversion. A zero-level detector (207) converts the signal into a two-level digital signal of positive and negative levels. The converted signals are subjected to spectrum despreading by correlators (206, 208), respectively. Whichever signal has a higher intensity is selected by absolute value detectors (209, 210), a comparator (211), and a switch (212). A decoder (213) decodes the selected signal. In a receiving state where the zero-level detector (207) is selected, the transmitter transmits the transmission signal after the signal is converted into a two-level signal. In a receiving state where the A/D converter (204) is selected, the transmitter transmits the transmission signal after the signal is converted into a signal having two or more levels.
Inventors:
Masaru Takahashi
Hiroshi Harada
Masatoshi An
Hiroshi Harada
Masatoshi An
Application Number:
JP2007505778A
Publication Date:
December 02, 2009
Filing Date:
March 02, 2005
Export Citation:
Assignee:
National Institute of Information and Communications Technology
International Classes:
H04J11/00; H04B1/707
Domestic Patent References:
| JP2005109963A | ||||
| JP2001217716A |
Foreign References:
| WO2001018970A1 |
Attorney, Agent or Firm:
Kimura Mitsuru