Title:
適応変調を用いた無線通信システム、無線通信装置及び通信方法
Document Type and Number:
Japanese Patent JP4271108
Kind Code:
B2
Abstract:
A radio communications system for performing communications based on an adaptive modulation by selecting one MCS from a set of MCSs each comprising a combination of a modulation scheme and a coding scheme which are ranked according to a transmission rate, the radio communications system comprising a change unit to change the selected MCS to a MCS of a higher ranking than the selected MCS when communication quality exceeds a first threshold, and change the selected MCS to a MCS of a lower ranking than the selected MCS when the communication quality is less than a second threshold lower than the first threshold, a first threshold controller to control the first threshold based on a first error rate, and a second threshold controller to control the second threshold based on a second error rate different from the first error rate.
Inventors:
Daisuke Takeda
Yuck Chin Chow
Yuck Chin Chow
Application Number:
JP2004246790A
Publication Date:
June 03, 2009
Filing Date:
August 26, 2004
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
H04L27/00; H04B7/26; H04L1/00; H04L29/08; H04Q7/20
Domestic Patent References:
| JP2003037554A | ||||
| JP2002118611A | ||||
| JP2002044168A | ||||
| JP2002271294A |
Attorney, Agent or Firm:
Takehiko Suzue
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto