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    REFERENCE SIGNAL DESIGN FOR CELL SEARCH IN AN ORTHOGONAL WIRELESS COMMUNICATION SYSTEM
    11.
    发明专利
    REFERENCE SIGNAL DESIGN FOR CELL SEARCH IN AN ORTHOGONAL WIRELESS COMMUNICATION SYSTEM 未知

    公开(公告)号：MY154923A

    公开(公告)日：2015-08-28

    申请号：MYPI20091452

    申请日：2007-10-31

    Applicant: QUALCOMM INC

    Inventor： JUAN MONTOJO ,  BYOUNG-HOON KIM ,  PRASAD MALLADI DURGA ,  TAO LUO

    IPC: H04B7/204

    Abstract: SYSTEMS AND METHODOLOGIES ARE DESCRIBED THAT FACILITATE EFFICIENT CELL ACQUISITION IN A WIRELESS COMMUNICATION SYSTEM. IN ONE ASPECT, A REFERENCE SIGNAL (236) FOR USE IN CELL ACQUISITION CAN BE CONSTRUCTED IN A BANDWIDTH-AGNOSTIC MANNER SUCH THAT IT CONTAINS A COMMON CENTRAL PORTION IN A PREDETERMINED FREQUENCY BAND THAT IS INDEPENDENT OF A BANDWIDTH UTILIZED BY AN ASSOCIATED WIRELESS COMMUNICATION SYSTEM. THE CENTRAL PORTION CAN BE CONSTRUCTED AS A TWO-DIMENSIONAL BLOCK IN TIME AND FREQUENCY THAT SPANS A DEFAULT CELL SEARCH BANDWIDTH, A PREDETERMINED BANDWIDTH SPECIFIED BY SYNCHRONIZATION CODES OR OTHER SIGNALS, OR ANOTHER SUITABLE BANDWIDTH. A REFERENCE SIGNAL CAN THEN BE CONSTRUCTED FORM THE CENTRAL PORTION BY TILING OR EXPANDING THE CENTRAL PORTION SUCH THAT IT SPANS THE ENTIRE SYSTEM BANDWIDTH.

    METHOD AND APPARATUS FOR CHANNEL AND NOISE ESTIMATION
    12.
    发明专利
    METHOD AND APPARATUS FOR CHANNEL AND NOISE ESTIMATION 未知

    公开(公告)号：IN7708DEN2014A

    公开(公告)日：2015-07-10

    申请号：IN7708DEN2014

    申请日：2014-09-16

    Applicant: QUALCOMM INC

    Inventor： BYOUNG-HOON KIM

    IPC: H03D1/04 ,  H04L27/06

    Abstract: The present invention relates to method and apparatus, said apparatus comprising: at least one processor to obtain samples from multiple receive antennas for a multiple-input multiple-output (MIMO) transmission sent from multiple transmit antennas, to determine channel conditions based on the samples, to select one of multiple channel and noise estimation schemes based on the channel conditions, and to perform channel and noise estimation based on the selected channel and noise estimation scheme, wherein the channel conditions are characterized by a ratio of a combined energy of non-strongest signal paths that exceed a threshold to an energy of a strongest signal path; and a memory coupled to the at least one processor. Figure 1

    CODING AND MULTIPLEXING OF CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM
    13.
    发明专利
    CODING AND MULTIPLEXING OF CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM 未知

    公开(公告)号：PH12012501868A1

    公开(公告)日：2015-05-18

    申请号：PH12012501868

    申请日：2012-09-20

    Applicant: QUALCOMM INC

    Inventor： PRASAD MALLADI DURGA ,  BYOUNG-HOON KIM ,  JUAN MONTOJO ,  SANDIP SARKAR

    IPC: H04L1/18 ,  H04L5/00 ,  H04L27/26

    Abstract: Techniques for sending control information in a wireless communication system are described. In an aspect, a UE spreads control information across frequency with a DFT and across time with an orthogonal sequence to obtain output data for the control information. In one design, the UE receives codewords for N HARQ processes in N downlink subframes, determines an ACK value for each HARQ process, codes N ACK values for the N HARQ processes to obtain ACK information, generates output data for the ACK information, and sends the output data in one of M uplink subframes. In another aspect, first control information is processed based on a first coding and multiplexing scheme utilizing code division multiplexing in time and frequency domains.; Second control information is processed based on a second coding and multiplexing scheme utilizing code division multiplexing in time domain and spreading in frequency domain.

    TRANSMISSION OF INFORMATION USING CYCLICALLY SHIFTED SEQUENCES
    14.
    发明专利
    TRANSMISSION OF INFORMATION USING CYCLICALLY SHIFTED SEQUENCES 未知

    公开(公告)号：MY149955A

    公开(公告)日：2013-11-15

    申请号：MYPI20092512

    申请日：2008-01-10

    Applicant: QUALCOMM INC

    Inventor： PRASAD MALLADI DURGA ,  BYOUNG-HOON KIM

    IPC: H04J11/00

    Abstract: TECHNIQUES FOR TRANSMITTING INFORMATION USING CYCLICALLY SHIFTED SEQUENCES ARE DESCRIBED. IN ONE DESIGN, FIRST AND SECOND SEQUENCES MAY BE GENERATED BY CYCLICALLY SHIFTING A BASE SEQUENCE BY FIRST AND SECOND AMOUNTS, RESPECTIVELY. THE BASE SEQUENCE MAY BE A CAZAC SEQUENCE, A PN SEQUENCE, OR SOME OTHER SEQUENCE HAVING GOOD CORRELATION PROPERTIES. THE CYCLIC SHIFTS FOR THE FIRST AND SECOND SEQUENCES MAY BE DETERMINED BASED ON A HOPPING PATTERN. A FIRST MODULATED SEQUENCE MAY BE GENERATED BASED ON THE FIRST SEQUENCE AND A FIRST MODULATION SYMBOL AND MAY BE SENT IN A FIRST TIME INTERVAL. A SECOND MODULATED SEQUENCE MAY BE GENERATED BASED ON THE SECOND SEQUENCE AND A SECOND MODULATION SYMBOL AND MAY BE SENT IN A SECOND TIME INTERVAL. EACH K MODULATED SEQUENCE MAY BE SENT ON K CONSECUTIVE SUBCARRIERS USING LOCALIZED FREQUENCY DIVISION MULTIPLEXING (LFDM).

    MIMO TRANSMISSION WITH LAYER PERMUTATION IN A WIRELESS COMMUNICATION SYSTEM
    15.
    发明专利
    MIMO TRANSMISSION WITH LAYER PERMUTATION IN A WIRELESS COMMUNICATION SYSTEM 未知

    公开(公告)号：MY149270A

    公开(公告)日：2013-08-15

    申请号：MYPI20091519

    申请日：2007-11-06

    Applicant: QUALCOMM INC

    Inventor： PRASAD MALLADI DURGA ,  BYOUNG-HOON KIM ,  TAESANG YOO

    IPC: H04B7/06

    Abstract: TECHNIQUES FOR SUPPORTING MIMO TRANSMISSION WITH LAYER PERMUTATION ARE DESCRIBED. IN ONE ASPECT, MULTIPLE CODEWORDS MAY BE GENERATED FOR TRANSMISSION FROM MULTIPLE ANTENNAS (E.G., VIRTUAL ANTENNAS), WITH THE NUMBER OF CODEWORDS BEING LESS THAN THE NUMBER OF ANTENNAS (1212). EACH CODEWORD MAY BE MAPPED ACROSS THE MULTIPLE ANTENNAS (1214). TWO CODEWORDS MAY BE GENERATED. FOR RANK 3, THE FIRST CODEWORD MAY BE MAPPED TO ONE LAYER (OR ONE ANTENNA ON EACH SUBCARRIER), AND THE SECOND CODEWORD MAY BE MAPPED TO TWO LAYERS (OR TWO ANTENNAS ON EACH SUBCARRIER). FOR RANK 4, EACH CODEWORD MAY BE MAPPED TO TWO LAYERS. IN ANOTHER ASPECT, A BASE CQI INDICATIVE OF AN AVERAGE SIGNAL QUALITY MAY BE DETERMINED. A DELTA CQI INDICATIVE OF IMPROVEMENT OVER THE AVERAGE SIGNAL QUALITY MAY ALSO BE DETERMINED. IN YET ANOTHER ASPECT, SELECTION MAY BE PERFORMED WITH DIFFERENT PENALTY FACTORS FOR DIFFERENT RANKS OR NUMBER OF CODEWORDS.

    MIMO transmission with rank-dependent precoding
    16.
    发明专利
    MIMO transmission with rank-dependent precoding 未知

    公开(公告)号：AU2008212797B2

    公开(公告)日：2011-10-13

    申请号：AU2008212797

    申请日：2008-02-08

    Applicant: QUALCOMM INC

    Inventor： BYOUNG-HOON KIM ,  HAO XU

    IPC: H04L1/06 ,  H04L25/03

    Abstract: Techniques for performing rank-dependent precoding for a MIMO transmission are described. Each rank may be associated with a set of at least one precoding vector or matrix that can provide good performance for that rank. A transmitter may obtain a precoding vector for a rank-1 transmission from a first set containing at least one column vector of a unitary matrix, e.g., a Fourier matrix. The transmitter may perform precoding for the rank-1 transmission based on the precoding vector. The transmitter may obtain a precoding matrix for a rank-2 transmission from a second set containing an identity matrix. The transmitter may perform precoding for the rank-2 transmission based on the precoding matrix. For the rank-2 transmission, the transmitter may select the identity matrix as the precoding matrix if a MIMO channel resembles a diagonal channel (which may be determined based on antenna configurations) and may select the unitary matrix otherwise.

    METHOD AND APPARATUS FOR GENERATING WEIGHTS FOR TRANSMIT DIVERSITY IN WIRELESS COMMUNICATION
    17.
    发明专利
    METHOD AND APPARATUS FOR GENERATING WEIGHTS FOR TRANSMIT DIVERSITY IN WIRELESS COMMUNICATION 未知

    公开(公告)号：MY142657A

    公开(公告)日：2010-12-15

    申请号：MYPI20062736

    申请日：2006-06-12

    Applicant: QUALCOMM INC

    Inventor： BYOUNG-HOON KIM

    IPC: H04B7/02

    Abstract: 27 METHOD AND APPAKNTUS FOR GENERATING WEIGHTS FOR TRANSMIT DIVERSITY IN NNIRELESS COMMUNICATION ABSTRACT [00881 TECHNIQUES FOR GERIETATING, WEIGHTS THAT CALL PROVIDE GOOD PETFORMANCE FOR 5 TRANSINIT DIVERSITY ARE DESCRIBED. A RECEIVER OBTAINS SPIIBOIS FOR A DATA TRANSMISSION SENT FROM MULTIPLE TRANSMIT ANTEMUTS TO AT LEAST ONE RECEINE ANTERINA. THE RECEI0.000000E+00I ALSO DERIVES CHANNEL ESTIMATES FOR A COMMUNICATION CHANNEL BETWEEN THE IRARISIRLIT ANTERINAS AND THE RECCI@E ANTENRIA(S). THE RECEIVER PERFOMIS EQUALIZATION OIL THE SYMBOLS KIDI AN EQUALIZER, WHICH IRLAY BE A FINEAR EQUALIZER OI A DCOISIORL FEEDBACK EQUALIZER THE 10 RCCEIVEI DERIVES WEIGHTS FOR (ILE TRANSILLIT ALITERWAS BASED OIL (LIE CHANNEL ESAILILITES AND [LIE EQUALIZER ARID LLSLLLG@ C.G.J 311 OBJECTIVE FUNCTION THAT IS APPLICABLE FOI THE EQUALIZER AND INDICATIVE OF A SIGOAL-TO-NOISE RATIO (SNR) ACHIEVABLE B@ (LIE EQUALIZET. DIFFERENT CQUALR/EIS (E.G., THE IMEAR EQUAFIL,ER AND DECISION FEEDBACK EQUALIZER) MN, BE ASSOCIATED WI TL I LI I FFEL CH I OBJ CC T I \ C BILLET I 011S.

    TRANSMISION MEDIANTE ANTENA VIRTUAL SELECTIVA
    18.
    发明专利
    TRANSMISION MEDIANTE ANTENA VIRTUAL SELECTIVA 未知

    公开(公告)号：AR055382A1

    公开(公告)日：2007-08-22

    申请号：ARP060103647

    申请日：2006-08-22

    Applicant: QUALCOMM INC

    Inventor： BYOUNG-HOON KIM ,  TAMER KADOUS

    IPC: H04B7/04

    Abstract: Técnicas para la transmision de datos provenientes de antenas virtuales en lugar de antenas físicas. Cada antena virtual puede ser mapeada para algunas o todas las antenas físicas por medio de un mapeo diferente. El funcionamiento de diferentes conjuntos de por lo menos una antena virtual es evaluado sobre la base de una o más métricas tales como la calidad de la senal, el rendimiento, la proporcion general y similares. El conjunto de antena virtual con el mejor funcionamiento es seleccionado para ser utilizado. En caso de que la seleccion de antena virtual se realice por parte del receptor, entonces la informacion de estado de canal para el conjunto de la antena virtual realice por parte del receptor, entonces la informacion de estado de canal para el conjunto de la antena virtual seleccionado puede ser enviado hacia el transmisor. La informacion de estado de canal puede abarcar las antenas virtuales seleccionadas, la calidad de la senal por las proporciones para las antenas virtuales seleccionadas, una o más matriz STP decodificacion utilizados para formar las antenas virtuales seleccionadas, y similares. El transmisor y/o el receptor utilizan la antena virtual seleccionada para transmision de datos.

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