Signaling and channel estimation for uplink transmit diversity

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United States of America Patent

PATENT NO 8982997
APP PUB NO 20120307928A1
SERIAL NO

13394888

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Abstract

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In a method of transmitting a data stream from a transmitter in a multiple-input-multiple-output (MIMO) wireless communication system, where the transmitter comprises a plurality of transmit antennas, a discrete Fourier transform (DFT) is applied to the data stream to generate a plurality of symbol sequences; symbols of a first symbol sequence from the plurality of symbol sequences are paired with symbols of a second symbol sequence from the plurality of symbol sequences to generate a plurality of symbol pairs, wherein the pairing results in an orphan symbol; a space-time block code (STBC) is applied to the symbol pairs to generate a plurality of sets of STBC symbols, each set of STBC symbols being associated with a corresponding one of the plurality of antennas; a cyclic delay diversity (CDD) operation is applied to the orphan symbol to generate a plurality of CDD symbols, each CDD symbol being associated with a corresponding one of the plurality of antennas; and each one of the antennas transmits the corresponding set of STBC symbols and the corresponding CDD symbol.

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Patent Owner(s)

  • NORTEL NETWORKS LIMITED;APLLE INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Baligh, Mohammadhaadi Kanata, CA 1 4
Ebrahimi, Tazeh Mahalleh Masoud Ottawa, CA 41 1042
Jia, Ming Ottawa, CA 419 10154
Khandani, Amir Kitchener, CA 26 467
Ma, Jianglei Kanata, CA 822 15868
Xu, Hua Nepean, CA 521 8387

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