中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

13 records (took 0.02 seconds)

    REDUCED COMPLEXITY BEAM-STEERED MIMO OFDM SYSTEM
    1.
    发明申请
    REDUCED COMPLEXITY BEAM-STEERED MIMO OFDM SYSTEM 有权
    减少复杂的波束转向MIMO OFDM系统

    公开(公告)号：US20130188677A1

    公开(公告)日：2013-07-25

    申请号：US13793520

    申请日：2013-03-11

    Applicant: QUALCOMM Incorporated

    Inventor： Steven J. Howard ,  John W. Ketchum ,  Mark S. Wallace ,  Jay Rodney Walton

    IPC: H04B7/04

    CPC classification number: H04B7/0421 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/066 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0248 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

    Abstract: Techniques for transmitting data using channel information for a subset of all subcarriers used for data transmission are described. A transmitter station receives channel information for at least one subcarrier that is a subset of multiple subcarriers used for data transmission. The channel information may include at least one transmit steering matrix, at least one set of eigenvectors, at least one channel response matrix, at least one channel covariance matrix, an unsteered pilot, or a steered pilot for the at least one subcarrier. The transmitter station obtains at least one transmit steering matrix for the at least one subcarrier from the channel information and determines a transmit steering matrix for each of the multiple subcarriers. The transmitter station performs transmit steering or beam-steering for each of the multiple subcarriers with the transmit steering matrix for that subcarrier.

    Abstract translation: 描述了使用用于数据传输的所有子载波的子集的信道信息来发送数据的技术。 发射机站接收作为用于数据传输的多个子载波的子集的至少一个子载波的信道信息。 信道信息可以包括至少一个发射导向矩阵，至少一组特征向量，至少一个信道响应矩阵，至少一个信道协方差矩阵，非导向导频或用于所述至少一个子载波的导频导频。 发射机站从信道信息中获取至少一个子载波的至少一个发射导向矩阵，并确定多个子载波中的每一个的发射导向矩阵。 发射台使用该子载波的发射导向矩阵对多个子载波中的每一个进行发射导向或波束导向。

    Spatial spreading in a multi-antenna communication system
    2.
    发明授权
    Spatial spreading in a multi-antenna communication system 有权

    公开(公告)号：US10476560B2

    公开(公告)日：2019-11-12

    申请号：US15728407

    申请日：2017-10-09

    Applicant: QUALCOMM Incorporated

    Inventor： Jay Rodney Walton ,  Lizhong Zheng ,  John W. Ketchum ,  Mark S. Wallace ,  Steven J. Howard

    IPC: H04L1/02 ,  H04B7/08 ,  H04B7/0417 ,  H04B7/06 ,  H04L1/06 ,  H04B17/336 ,  H04B7/0456

    Abstract: Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND≥1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.

    Multi-antenna transmission for spatial division multiple access
    3.
    发明授权
    Multi-antenna transmission for spatial division multiple access 有权

    公开(公告)号：US10128920B2

    公开(公告)日：2018-11-13

    申请号：US15405934

    申请日：2017-01-13

    Applicant: QUALCOMM Incorporated

    Inventor： J. Rodney Walton ,  John W. Ketchum ,  John Edward Smee ,  Mark S. Wallace ,  Steven J. Howard

    IPC: H04B7/04 ,  H04B17/309 ,  H04W16/28 ,  H04B7/06 ,  H04B7/0408 ,  H04B7/0426 ,  H04B7/0417 ,  H04B7/0413

    Abstract: An uplink channel response matrix is obtained for each terminal and decomposed to obtain a steering vector used by the terminal to transmit on the uplink. An “effective” uplink channel response vector is formed for each terminal based on its steering vector and its channel response matrix. Multiple sets of terminals are evaluated based on their effective channel response vectors to determine the best set (e.g., with highest overall throughput) for uplink transmission. Each selected terminal performs spatial processing on its data symbol stream with its steering vector and transmits its spatially processed data symbol stream to an access point. The multiple selected terminals simultaneously transmit their data symbol streams via their respective MIMO channels to the access point. The access point performs receiver spatial processing on its received symbol streams in accordance with a receiver spatial processing technique to recover the data symbol streams transmitted by the selected terminals.

    Reduced complexity beam-steered MIMO OFDM system
    5.
    发明授权
    Reduced complexity beam-steered MIMO OFDM system 有权
    降低复杂度的波束控制MIMO OFDM系统

    公开(公告)号：US08824583B2

    公开(公告)日：2014-09-02

    申请号：US13793520

    申请日：2013-03-11

    Applicant: QUALCOMM Incorporated

    Inventor： Steven J. Howard ,  John W. Ketchum ,  Mark S. Wallace ,  Jay Rodney Walton

    IPC: H04L27/28 ,  H04B7/06 ,  H04L25/02 ,  H04B7/04 ,  H04L25/03 ,  H04L5/00

    CPC classification number: H04B7/0421 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/066 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0248 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

    Abstract: Techniques for transmitting data using channel information for a subset of all subcarriers used for data transmission are described. A transmitter station receives channel information for at least one subcarrier that is a subset of multiple subcarriers used for data transmission. The channel information may include at least one transmit steering matrix, at least one set of eigenvectors, at least one channel response matrix, at least one channel covariance matrix, an unsteered pilot, or a steered pilot for the at least one subcarrier. The transmitter station obtains at least one transmit steering matrix for the at least one subcarrier from the channel information and determines a transmit steering matrix for each of the multiple subcarriers. The transmitter station performs transmit steering or beam-steering for each of the multiple subcarriers with the transmit steering matrix for that subcarrier.

    Abstract translation: 描述了使用用于数据传输的所有子载波的子集的信道信息来发送数据的技术。 发射机站接收作为用于数据传输的多个子载波的子集的至少一个子载波的信道信息。 信道信息可以包括至少一个发射导向矩阵，至少一组特征向量，至少一个信道响应矩阵，至少一个信道协方差矩阵，非导向导频或用于所述至少一个子载波的导频导频。 发射机站从信道信息中获取至少一个子载波的至少一个发射导向矩阵，并确定多个子载波中的每一个的发射导向矩阵。 发射台使用该子载波的发射导向矩阵对多个子载波中的每一个进行发射导向或波束导向。

    OFDM COMMUNICATION SYSTEM WITH MULTIPLE OFDM SYMBOL SIZES
    6.
    发明申请
    OFDM COMMUNICATION SYSTEM WITH MULTIPLE OFDM SYMBOL SIZES 有权
    具有多个OFDM符号尺寸的OFDM通信系统

    公开(公告)号：US20130279614A1

    公开(公告)日：2013-10-24

    申请号：US13920971

    申请日：2013-06-18

    Applicant: QUALCOMM Incorporated

    Inventor： Jay Rod Walton ,  John W. Ketchum ,  Mark Wallace ,  Steven J. Howard

    IPC: H04L5/00

    CPC classification number: H04L5/0007 ,  H04B7/0421 ,  H04B7/043 ,  H04B7/0669 ,  H04B7/0697 ,  H04B7/0854 ,  H04L1/0017 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/0037 ,  H04L25/0232 ,  H04L25/0248 ,  H04L27/2602 ,  H04W28/20 ,  H04W52/50 ,  H04W72/04

    Abstract: Techniques to use OFDM symbols of different sizes to achieve greater efficiency for OFDM systems. The system traffic may be arranged into different categories (e.g., control data, user data, and pilot data). For each category, one or more OFDM symbols of the proper sizes may be selected for use based on the expected payload size for the traffic in that category. For example, control data may be transmitted using OFDM symbols of a first size, user data may be transmitted using OFDM symbols of the first size and a second size, and pilot data may be transmitted using OFDM symbols of a third size or the first size. In one exemplary design, a small OFDM symbol is utilized for pilot and for transport channels used to send control data, and a large OFDM symbol and the small OFDM symbol are utilized for transport channels used to send user data.

    Abstract translation: 使用不同大小的OFDM符号来实现OFDM系统更高效率的技术。 系统业务可以被布置成不同的类别（例如，控制数据，用户数据和导频数据）。 对于每个类别，可以基于该类别中的业务的预期有效载荷大小来选择适当尺寸的一个或多个OFDM符号用于使用。 例如，可以使用第一大小的OFDM符号发送控制数据，可以使用第一大小和第二大小的OFDM符号发送用户数据，并且可以使用第三大小或第一大小的OFDM符号来发送导频数据 。 在一个示例性设计中，小OFDM符号用于导频和用于发送控制数据的传输信道，并且将大OFDM符号和小OFDM符号用于用于发送用户数据的传输信道。

    SPATIAL SPREADING IN A MULTI-ANTENNA COMMUNICATION SYSTEM
    7.
    发明申请
    SPATIAL SPREADING IN A MULTI-ANTENNA COMMUNICATION SYSTEM 审中-公开

    公开(公告)号：US20180048362A1

    公开(公告)日：2018-02-15

    申请号：US15728407

    申请日：2017-10-09

    Applicant: QUALCOMM Incorporated

    Inventor： Jay Rodney Walton ,  Lizhong Zheng ,  John W. Ketchum ,  Mark S. Wallace ,  Steven J. Howard

    IPC: H04B7/0417 ,  H04B7/06 ,  H04L1/06 ,  H04B7/0456 ,  H04B17/336

    CPC classification number: H04B7/0417 ,  H04B7/0456 ,  H04B7/0669 ,  H04B17/336 ,  H04L1/06

    Abstract: Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND≧1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.

    SPATIAL SPREADING IN A MULTI-ANTENNA COMMUNICATION SYSTEM
    8.
    发明申请
    SPATIAL SPREADING IN A MULTI-ANTENNA COMMUNICATION SYSTEM 有权
    多天线通信系统中的空间传播

    公开(公告)号：US20160329936A1

    公开(公告)日：2016-11-10

    申请号：US14523450

    申请日：2014-10-24

    Applicant: QUALCOMM Incorporated

    Inventor： Jay Rodney Walton ,  Lizhong Zheng ,  John W. Ketchum ,  Mark S. Wallace ,  Steven J. Howard

    IPC: H04B7/04 ,  H04B17/336

    CPC classification number: H04B7/0417 ,  H04B7/0456 ,  H04B7/0669 ,  H04B17/336 ,  H04L1/06

    Abstract: Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND≧1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.

    Abstract translation: 在多天线系统中执行空间扩展，以随机化接收实体针对每个发送的数据符号块观察到的“有效”信道。 对于MIMO系统，在发送实体处理（例如，编码，交织和调制）数据以获得要在NM传输跨度中发送的ND数据符号块，其中ND≥1和NM> 1。 ND块被划分为NM数据符号子块，每个传输跨度的一个子块。 对于每个子块，选择导向矩阵（例如，以确定性或伪随机方式从一组L个导引矩阵中，其中L> 1）。 每个数据符号子块用为该子块选择的导引矩阵进行空间处理，以获得在一个传输范围内经由NT个发射天线进一步处理和传输的发射符号。 因此，ND数据符号块用NM导引矩阵进行空间处理，并观察信道的集合。

    Spatial spreading in a multi-antenna communication system
    10.
    发明授权
    Spatial spreading in a multi-antenna communication system 有权

    公开(公告)号：US11171693B2

    公开(公告)日：2021-11-09

    申请号：US16666149

    申请日：2019-10-28

    Applicant: QUALCOMM Incorporated

    Inventor： Jay Rodney Walton ,  Lizhong Zheng ,  John W. Ketchum ,  Mark S. Wallace ,  Steven J. Howard

    IPC: H04L1/02 ,  H04B7/08 ,  H04B7/0417 ,  H04B7/06 ,  H04L1/06 ,  H04B17/336 ,  H04B7/0456

    Abstract: Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND≥1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.

Patent Agency Ranking