Combining signal-interference-ratio (SIR) estimates for...

Details Combining signal-interference-ratio (SIR) estimates for... Combining signal-interference-ratio (SIR) estimates for...

2005-03-22

2010-12-28

Payne, David C (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S316000, C375S146000, C375S140000, C375S147000, C375S343000, C375S295000, C375S296000, C375S297000

Reexamination Certificate

active

07860198

ABSTRACT:
An overall SIR estimate is based on a weighted-average of different SIR estimates, wherein the weights are chosen to minimize the mean-square-error (MSE) of the overall SIR estimate. Alternatively, the overall SIR estimate is based on a selection from among the different SIR estimates, based on the expected reliability of each SIR estimate. The expected reliability of each SIR estimate may be based on the current format of the transmitted signal and/or a prior estimated SIR level.

REFERENCES:
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patent: 2002/0176516 (2002-11-01), Jeske et al.
patent: 2003/0016740 (2003-01-01), Jeske et al.
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Jeske D R et al: “Signal-to-Interference Ratio Estimation Based on Decision Feedback”; VTC 2001 Spring. IEEE VTS 54RD, Vehicular Tech. Conference. Rhodes Greece May 6-9, 2001. IEEE Vehicular Tech. Conf. New York vol. 4 of 4, Conf 53, May 6, 2001. pp. 2484-2488.
Ashwin Sampath and Daniel R. Jeske; “Analysis of Signal-to-Interference Ratio Estimation Methods for Wireless Communication Systems,” IEEE International Conference on Communications (ICC) 2001, pp. 2499-2503, vol. 8.
Office Action in Japanese Patent Appln. No. 2007-506872 (Aug. 6, 2010).

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