Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2005-04-20
2009-08-25
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S346000, C375S260000, C455S063100, C455S278100
Reexamination Certificate
active
07580490
ABSTRACT:
An apparatus and method for channel estimation using preamble signals received from a serving Node B and neighboring Node Bs each having N (≧1) transmit antennas in a UE having M (≧1) receive antennas in a broadband wireless communication system. In the channel estimation apparatus, a Node B number decider calculates the maximum number NSof channel-estimatable Node Bs using a preamble length, the number of antennas in each of the Node Bs, and the number of multiple paths. A multi-cell preamble matrix generator generates a multi-cell preamble matrix xSby generating a Node B preamble matrix for each of the Node Bs and selecting NSNode B preamble matrices according to reception power among the Node B preamble matrices. A channel estimator performs a channel estimation using xSand signals received through the M antennas during a preamble receiving period.
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Cho Young-Kwon
Hwang Chan-Soo
Suh Chang-Ho
Yoon Seok-Hyun
Liu Shuwang
Perez James M
Samsung Electronics Co,. Ltd
The Farrell Law Firm, LLP
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