Apparatus and method for feeding back information on channel...

Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train

Reexamination Certificate

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C375S260000, C455S132000, C455S134000, C455S135000, C455S139000, C455S504000, C455S505000, C455S506000, C455S059000, C455S060000, C370S464000, C370S465000, C370S478000, C370S480000

Reexamination Certificate

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07876851

ABSTRACT:
An apparatus and method for controlling amount of information to be fed back in a multiple antenna system in a multi-user environment. The apparatus includes a channel estimator which estimates channel values by using an input signal; a Singular Value Decomposition (SVD) operator which decomposes singular values from the estimated channel values; and a feedback determining unit which uses the singular values to compute channel capacity that can be obtained according to the amount of channel information to be fed back, and selects the channel information to be fed back by using the channel capacity.

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patent: 7773685 (2010-08-01), Tirkkonen et al.
patent: 2005/0201307 (2005-09-01), Chae et al.
patent: 2006/0182192 (2006-08-01), Takano
patent: 2006/0209975 (2006-09-01), Jeong et al.
patent: 2008/0108310 (2008-05-01), Tong et al.
patent: 2010/0008411 (2010-01-01), Hansen et al.
patent: 2010/0054355 (2010-03-01), Kinjo et al.
patent: 2010/0195752 (2010-08-01), Lee et al.
patent: 1020050055592 (2005-06-01), None

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