CALIBRATION OF CHANNEL FOR COMMUNICATION SYSTEM WITH DUPLEX COMMUNICATION AND TIME DIVISION CHANNELLING Russian patent published in 2011 - IPC H04J3/00 

Abstract RU 2437220 C2

FIELD: information technologies.

SUBSTANCE: in one of realisation versions, pilot signals are transferred along a downlink and an upperlink, and are used to produce estimate responses of the downlink and the upperlink, accordingly. Then two sets of correction factors are identified, being based on estimate responses of the downlink and the upperlink. The calibrated downlink is formed using the first set of correction factors for the downlink, and the calibrated upperlink is formed using the second set of correction factors for the upperlink. The first and the second sets of correction factors may be determined using calculation of matrices ratio or calculation with a minimum mean square error (MMSE). Calibration may be carried out on a real time basis based on their transfer along a radio channel.

EFFECT: account of differences in frequency responses of transmitting and receiving circuits in a point of access and a user terminal.

38 cl, 6 dwg

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RU 2 437 220 C2

Authors

Uollehjs Mark

Ketchum Dzhon U.

Uolton Rodni Dzh.

Govard Stiven Dzh.

Dates

2011-12-20Published

2009-09-17Filed