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    EFFICIENT JOINT DETECTION
    11.
    发明公开
    EFFICIENT JOINT DETECTION 有权
    化合物的有效检测

    公开(公告)号：EP1552405A4

    公开(公告)日：2006-03-22

    申请号：EP03793067

    申请日：2003-08-15

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KWAK JAEYOUNG ,  HAIM JOHN W ,  ZEIRA ARIELA ,  PAN JUNG-LIN

    IPC: H04B1/707 ,  H04J11/00 ,  G06F15/00

    CPC classification number: H04B1/71052 ,  H04B2201/70707

    Abstract: K data signals, or bursts, are transmitted over a shared spectrum in a code division multiple access communication format. A combined signal is received and sampled over the shared spectrum, as a plurality of received vector versions. The combined signal includes the K transmitted data signals. A plurality of system matrices and an associated covariance matrix using codes and estimated impulse responses of the K data signals is produced. Each system matrix corresponds to a received vector version. The system and covariance matrices are extended and approximated as block circulant matrices. A diagonal matrix of each of the extended and approximated system and covariance matrices are determined by prime factor algorithm - fast Fourier transform (PFA-FFT) without division of the matrix. The received vector versions are extended. A product of the diagonal matrices and the extended received vector versions is taken. An inverse block discrete Fourier transform is performed by a PFA-FFT on a result of the product to produce the estimated data of the K data signals.

    METHOD AND APPARATUS FOR IMPLEMENTING SPACE FREQUENCY BLOCK CODING
    12.
    发明专利
    METHOD AND APPARATUS FOR IMPLEMENTING SPACE FREQUENCY BLOCK CODING 未知

    公开(公告)号：CA2771267C

    公开(公告)日：2016-03-15

    申请号：CA2771267

    申请日：2005-08-11

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KWAK JAEYOUNG ,  OLESEN ROBERT LIND ,  BULTAN AYKUT ,  ZEIRA ELDAD ,  KOO CHANG-SOO ,  OZLUTURK FATIH ,  HUANG YUEJIN ,  PASAD KALPENDU R

    IPC: H04J99/00 ,  H04W24/00 ,  H04B7/06 ,  H04J11/00 ,  H04W88/02 ,  H04W88/08

    Abstract: The present invention is related to a method and apparatus for implementing space frequency block coding (SFBC) in an orthogonal frequency division multiplexing (OFDM) wireless communication system. The present invention is applicable to both a closed loop mode and an open loop mode. In the closed loop mode, power loading and eigen- beamforming are performed based on channel state information (CSI). A channel coded data stream is multiplexed into two or more data streams. Power loading is performed based on the CSI on each of the multiplexed data streams. SFBC encoding is performed on the data streams for each of the paired subcarriers. Then, eigen- beamforming is performed based on the CSI to distribute eigenbeams to multiple transmit antennas. The power loading may be performed on two or more SFBC encoding blocks or on each eigenmodes. Additionally, the power loading may be performed across subcarriers or subcarrier groups for weak eigenmodes.

    16.
    发明专利
    未知

    公开(公告)号：AT456232T

    公开(公告)日：2010-02-15

    申请号：AT05785474

    申请日：2005-08-11

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KWAK JAEYOUNG ,  OLESEN ROBERT ,  BULTAN AYKUT ,  ZEIRA ELDAD ,  KOO CHANG-SOO ,  OZLUTURK FATIH ,  HUANG YUEJIN ,  PASAD KALPENDU

    IPC: H04J99/00 ,  H04L27/08

    Abstract: The present invention is related to a method and apparatus for implementing space frequency block coding (SFBC) in an orthogonal frequency division multiplexing (OFDM) wireless communication system. The present invention is applicable to both a closed loop mode and an open loop mode. In the closed loop mode, power loading and eigen-beamforming are performed based on channel state information (CSI). A channel coded data stream is multiplexed into two or more data streams. Power loading is performed based on the CSI on each of the multiplexed data streams. SFBC encoding is performed on the data streams for each of the paired subcarriers. Then, eigen-beamforming is performed based on the CSI to distribute eigenbeams to multiple transmit antennas. The power loading may be performed on two or more SFBC encoding blocks or on each eigenmodes. Additionally, the power loading may be performed across subcarriers or subcarrier groups for weak eigenmodes.

    19.
    发明专利
    未知

    公开(公告)号：BRPI0516688A

    公开(公告)日：2008-09-16

    申请号：BRPI0516688

    申请日：2005-11-01

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KWAK JAEYOUNG ,  KOO CHANG-SOO ,  OLESEN ROBERT LIND ,  BULTAN AYKUT ,  OZLUTURK FATIH

    IPC: H04J99/00 ,  H04K1/10 ,  H04B7/02 ,  H04L1/02 ,  H04L27/00

    Abstract: The invention relates to a method and a transmitter for transmitting data using multiple-input multiple-output, MIMO, orthogonal frequency division multiplexing, OFDM, the method comprising: a transmitter generating at least one input data stream; the transmitter generating a plurality of spatial streams; the transmitter determining a transmission coding scheme, and processing the input data stream in accordance with the transmission coding scheme to generate at least two spatial streams, the transmission coding scheme being one of spatial multiplexing, SM, without frequency diversity, FD, wherein one data symbol is sent per one sub-carrier for each spatial stream; and the transmitter transmitting the at least two spatial streams via the generated spatial streams.

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