Title:
無線チャンネルの信号対干渉比を評価する方法及び装置
Document Type and Number:
Japanese Patent JP4152878
Kind Code:
B2
Abstract:
Method and apparatus that compensates for overestimation of channel SINR due to overfitting of an adaptive equalizer to the pilot portion of a received frame. The SINR of a wireless channel is estimated by adapting an adaptive equalizer using the pilot portion of the frame, applying the adaptive equalizer to a non-pilot portion of the frame, determining a parameter using the adaptive equalizer output, and estimating the SINR of the wireless channel using the parameter. The parameter can include, for example, the mean square error (MSE) or the bias of the equalizer output. The accuracy of the SINR estimate according to this aspect of the present invention is thereby improved (as compared to a SINR estimate based on parameters calculated during the pilot interval) because the adaptive equalizer is not overfit to the control or data portions of the frame.
Inventors:
Covaton, Ivan Jesus Fernandez
Smy, John Yee
Jayara Man, Suricant
Smy, John Yee
Jayara Man, Suricant
Application Number:
JP2003501883A
Publication Date:
September 17, 2008
Filing Date:
May 31, 2002
Export Citation:
Assignee:
QUALCOMM INCORPORATED
International Classes:
H04B1/707; H04B1/7097; H04L1/20; H04L25/03
Domestic Patent References:
| JP11266232A | ||||
| JP200049662A |
Foreign References:
| US6215818 | ||||
| WO2000077938A1 | ||||
| WO2000079710A1 |
Attorney, Agent or Firm:
Takehiko Suzue
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto
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