Apparatus and method for channel estimation in an orthogonal...

Pulse or digital communications – Receivers – Interference or noise reduction

Reexamination Certificate

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C375S346000, C375S260000, C455S063100, C455S278100

Reexamination Certificate

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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.

REFERENCES:
patent: 6650616 (2003-11-01), Crawford
patent: 6654431 (2003-11-01), Barton et al.
patent: 2002/0122381 (2002-09-01), Wu et al.
patent: 2002/0181390 (2002-12-01), Mody et al.
patent: 2003/0026197 (2003-02-01), Crawford
patent: 2003/0053524 (2003-03-01), Dent
patent: 2005/0111408 (2005-05-01), Skillermark et al.
patent: 1 276 288 (2007-01-01), None
patent: 2 830 389 (2001-10-01), None
patent: 2 353 181 (2001-02-01), None
patent: 2 138 909 (1993-09-01), None
patent: 2 160 967 (1996-06-01), None
patent: WO 02/05442 (2002-01-01), None
Changho Suh et al., Channel Estimation Technique for Mitigating ICI in MIMO-OFDM Cellular Systems, 2004 Global Telecommunications Conference, Nov. 29, 2004, pp. 2679-2683.
Changho Suh et al., Comparative Study of Time-Domain and Frequency-Domain Channel Estimation in MIMO-OFDM Systems, 14thIEEE 2003 International Symposium on Personal, Indoor and Mobile Radio Communications, pp.l 1095-1099.
Changho Suh et al., Preamble Design for Channel Estimation in MIMO-OFDM Systems, 2003 IEEE Global Telecommunications Conference, Dec. 1, 2003, pp. 317-321.

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