Title:
ADAPTIVE MODULATION CONTROL SYSTEM, AND RADIO COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2006/098105
Kind Code:
A1
Abstract:
[Problems] To reduce the degradation of transmission quality even in the situation of a high moving velocity. [Means for Solving the Problems] Provided is an adaptive modulation control system for selecting any of plural modulation parameters determined on the basis of plural modulation methods, error correction encoding percentages or their combinations, adaptively to a propagation path state. The adaptive modulation control system comprises a receiving state measurement unit (2) for measuring the receiving state of a signal received from a communication partner, a correction unit (3) for performing a correction to change the propagation path information indicating the measurement result of the propagation path state, on the basis of the receiving state measured, and a modulation parameter select unit (4) for selecting a modulation parameter corresponding to the propagation path information corrected.
Inventors:
NOGAMI TOSHIZO
ONODERA TAKASHI
TSUBOI HIDEKAZU
ONODERA TAKASHI
TSUBOI HIDEKAZU
Application Number:
PCT/JP2006/302497
Publication Date:
September 21, 2006
Filing Date:
February 14, 2006
Export Citation:
Assignee:
SHARP KK (JP)
NOGAMI TOSHIZO
ONODERA TAKASHI
TSUBOI HIDEKAZU
NOGAMI TOSHIZO
ONODERA TAKASHI
TSUBOI HIDEKAZU
International Classes:
H04J11/00; H04B7/26
Foreign References:
| JP2005065323A | 2005-03-10 | |||
| JP2005064947A | 2005-03-10 |
Other References:
YOSHIKI T, SAMPEI S, MORINAGA N: "Performance of the OFDM based Adaptive Modulation System with a Multilevel Transmit Power Control Scheme using Delay Profile Extrapolation Technique for High Mobility Terminals", TECHNICAL REPORT OF IEICE, RCS2002-58, May 2002 (2002-05-01), pages 41 - 46, XP002997901
Attorney, Agent or Firm:
Fukuchi, Takeo (Shibuya-ku, Tokyo 31, JP)
Download PDF:
Previous Patent: LITHOGRAPHIC PRINTING PLATE MAKING METHOD AND IMAGE EXPOSING SYSTEM
Next Patent: AIR BAG DEVICE FOR FRONT PASSENGER'S SEAT
Next Patent: AIR BAG DEVICE FOR FRONT PASSENGER'S SEAT