Pulse or digital communications – Equalizers – Automatic
Reexamination Certificate
2006-09-12
2006-09-12
Burd, Kevin (Department: 2631)
Pulse or digital communications
Equalizers
Automatic
C375S231000
Reexamination Certificate
active
07106792
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.
REFERENCES:
patent: 4901307 (1990-02-01), Gilhousen et al.
patent: 4991184 (1991-02-01), Hashimoto
patent: 5103459 (1992-04-01), Gilhousen et al.
patent: 5504773 (1996-04-01), Padovani et al.
patent: 5914959 (1999-06-01), Marchetto et al.
patent: 6175588 (2001-01-01), Visotsky et al.
patent: 6215818 (2001-04-01), Velez et al.
patent: 6310915 (2001-10-01), Wells et al.
patent: 6628707 (2003-09-01), Rafie et al.
patent: 6680985 (2004-01-01), Strodtbeck et al.
patent: 0366159 (1990-05-01), None
Cioffi, et al. “MMSE Decision-Feedback Equalizers and Coding- Part I: Equalization Results” IEEE Transactions on Communications 43(10): 2582-2594 (1995).
Corbaton Ivan Jesus Fernandez
Jayaraman Srikant
Smee John E.
Burd Kevin
Godsey Sandra L.
Qualcomm Inc.
Rouse Thomas R.
Wadsworth Philip
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