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    • 2. 发明授权
    • Method and system for beamforming signal transmission under a per-antenna power constraint
    • 在每个天线功率约束下波束成形信号传输的方法和系统
    • US08442142B2
    • 2013-05-14
    • US12761567
    • 2010-04-16
    • Eric OjardSirikiat AriyavisitakulJoonsuk Kim
    • Eric OjardSirikiat AriyavisitakulJoonsuk Kim
    • H01Q3/00G01S1/00
    • H01Q25/00
    • A method and system for beamforming signal transmission under a per-antenna power constraint is presented. In one aspect, a multiple input multiple output (MIMO) transmitting station may compute a per-antenna power gain factor for each of a plurality of transmit chain signals. The transmit chain signals may be concurrently transmitted by a plurality of transmitting antennas at the MIMO transmitting station. The plurality of transmit chain signals may correspond to beamforming signals, which are generated by performing spatial mapping on a plurality of space-time signals. The plurality of power gain factors may be computed based on a per-antenna power constraint. Alternatively, the plurality of power gain factors may be computed based on joint per-antenna power and total-power constraints. Each of the transmit chain signals may be amplified or attenuated based on the corresponding antenna gain factor. The amplified or attenuated signal is then transmitted by the corresponding transmitting antenna.
    • 提出了一种在每个天线功率约束下波束成形信号传输的方法和系统。 在一个方面,多输入多输出(MIMO)发射站可以为多个发射链信号中的每一个计算每天线功率增益因子。 发射链信号可以在MIMO发射台处由多个发射天线同时发射。 多个发射链信号可以对应于通过在多个时空信号上执行空间映射而生成的波束形成信号。 可以基于每天线功率约束来计算多个功率增益因子。 或者,可以基于联合每天线功率和总功率约束来计算多个功率增益因子。 每个发射链信号可以基于相应的天线增益因子被放大或衰减。 放大或衰减的信号然后由相应的发射天线发射。
    • 4. 发明授权
    • Method and system for beamforming in a multiple user multiple input multiple output (MIMO) communication system using a codebook
    • 在使用码本的多用户多输入多输出(MIMO)通信系统中波束成形的方法和系统
    • US08098755B2
    • 2012-01-17
    • US12190272
    • 2008-08-12
    • Joonsuk KimSirikiat Ariyavisitakul
    • Joonsuk KimSirikiat Ariyavisitakul
    • H04B7/02
    • H04L25/03343H04L1/0026H04L1/0618H04L2025/03426H04L2025/03802
    • A method and system for beamforming in a multiple user multiple input multiple output (MIMO) communication system using a codebook may include a processor in a node B that enables generation of an interference cancellation matrix (WR). The interference cancellation matrix, also referred to as a matched filter, may enable a composite signal (Y) to be represented as a plurality of subsidiary signals (yi), each of which is transmitted by the node B for reception at a corresponding ith UE station. Each of the subsidiary signals yi may be generated based on a corresponding one of a plurality of data stream signals (xi). The processor may enable generation of a precoding matrix (WT) based on the interference cancellation matrix. A transmitter within the node B may enable generation of a plurality of signals based on the preceding matrix. The signals may be transmitted via a wireless communication medium.
    • 在使用码本的多用户多输入多输出(MIMO)通信系统中的波束成形的方法和系统可以包括能够产生干扰消除矩阵(WR)的节点B中的处理器。 也称为匹配滤波器的干扰消除矩阵可以使得复合信号(Y)能够被表示为多个辅助信号(yi),每个辅助信号由节点B发送以在对应的第i个UE处接收 站。 辅助信号yi中的每一个可以基于多个数据流信号(xi)中的对应的一个生成。 处理器可以使得能够基于干扰消除矩阵生成预编码矩阵(WT)。 节点B内的发射机可以使得能够基于先前的矩阵生成多个信号。 信号可以经由无线通信介质发送。
    • 6. 发明申请
    • METHOD AND SYSTEM FOR BEAMFORMING IN A MULTIPLE USER MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) COMMUNICATION SYSTEM USING A CODEBOOK
    • 在多用户多输入多输出(MIMO)通信系统中使用CODEBOOK进行波束成像的方法和系统
    • US20120106603A1
    • 2012-05-03
    • US13349282
    • 2012-01-12
    • Joonsuk KimSirikiat Ariyavisitakul
    • Joonsuk KimSirikiat Ariyavisitakul
    • H04B1/38
    • H04L25/03343H04L1/0026H04L1/0618H04L2025/03426H04L2025/03802
    • A method and system for beamforming in a multiple user multiple input multiple output (MIMO) communication system using a codebook may include a processor in a node B that enables generation of an interference cancellation matrix (WR). The interference cancellation matrix, also referred to as a matched filter, may enable a composite signal (Y) to be represented as a plurality of subsidiary signals (yi), each of which is transmitted by the node B for reception at a corresponding ith UE station. Each of the subsidiary signals yi may be generated based on a corresponding one of a plurality of data stream signals (xi). The processor may enable generation of a precoding matrix (WT) based on the interference cancellation matrix. A transmitter within the node B may enable generation of a plurality of signals based on the precoding matrix. The signals may be transmitted via a wireless communication medium.
    • 在使用码本的多用户多输入多输出(MIMO)通信系统中的波束成形的方法和系统可以包括能够产生干扰消除矩阵(WR)的节点B中的处理器。 也称为匹配滤波器的干扰消除矩阵可以使得复合信号(Y)能够被表示为多个辅助信号(yi),每个辅助信号由节点B发送以在对应的第i个UE处接收 站。 辅助信号yi中的每一个可以基于多个数据流信号(xi)中的对应的一个生成。 处理器可以使得能够基于干扰消除矩阵生成预编码矩阵(WT)。 节点B内的发射机可以使得能够基于预编码矩阵生成多个信号。 信号可以经由无线通信介质发送。
    • 8. 发明申请
    • Method and System for Beamforming in a Multiple User Multiple Input Multiple Output (MIMO) Communication System Using a Codebook
    • 在多用户多输入多输出(MIMO)通信系统中使用码本的波束成形方法和系统
    • US20090066577A1
    • 2009-03-12
    • US12190272
    • 2008-08-12
    • Joonsuk KimSirikiat Ariyavisitakul
    • Joonsuk KimSirikiat Ariyavisitakul
    • H01Q3/00H04L25/49
    • H04L25/03343H04L1/0026H04L1/0618H04L2025/03426H04L2025/03802
    • A method and system for beamforming in a multiple user multiple input multiple output (MIMO) communication system using a codebook may include a processor in a node B that enables generation of an interference cancellation matrix (WR). The interference cancellation matrix, also referred to as a matched filter, may enable a composite signal (Y) to be represented as a plurality of subsidiary signals (yi), each of which is transmitted by the node B for reception at a corresponding ith UE station. Each of the subsidiary signals yi may be generated based on a corresponding one of a plurality of data stream signals (xi). The processor may enable generation of a precoding matrix (WT) based on the interference cancellation matrix. A transmitter within the node B may enable generation of a plurality of signals based on the preceding matrix. The signals may be transmitted via a wireless communication medium.
    • 在使用码本的多用户多输入多输出(MIMO)通信系统中的波束成形的方法和系统可以包括能够产生干扰消除矩阵(WR)的节点B中的处理器。 也称为匹配滤波器的干扰消除矩阵可以使得复合信号(Y)能够被表示为多个辅助信号(yi),每个辅助信号由节点B发送以在对应的第i个UE处接收 站。 辅助信号yi中的每一个可以基于多个数据流信号(xi)中的对应的一个生成。 处理器可以使得能够基于干扰消除矩阵生成预编码矩阵(WT)。 节点B内的发射机可以使得能够基于先前的矩阵生成多个信号。 信号可以经由无线通信介质发送。
    • 10. 发明申请
    • METHOD AND SYSTEM FOR COMMUNICATING FEEDBACK INFORMATION IN A MULTIPLE USER MULTIPLE INPUT MULTIPLE OUTPUT (MU-MIMO) COMMUNICATION SYSTEM
    • 用于在多用户多输入多输出(MU-MIMO)通信系统中通信反馈信息的方法和系统
    • US20110159866A1
    • 2011-06-30
    • US12720937
    • 2010-03-10
    • Joonsuk KimSirikiat Ariyavisitakul
    • Joonsuk KimSirikiat Ariyavisitakul
    • H04W40/00H04L27/28
    • H04L5/023H04B7/0413H04B7/0417H04B7/0452H04B7/0626
    • A method and system for communicating feedback information in a multiple user multiple input multiple output (MU-MIMO) communication system are presented. In one aspect of the method and system, a beamformer station may communicate a feedback information request to a plurality of beamformee stations. The feedback information request may request feedback data for a plurality of RF channel bands. The RF channel bands may form a multichannel. The beamformer may subsequently transmit a plurality of signals utilizing the RF channel bands within the multichannel. Each of the beamformees may receive the plurality of subsequently transmitted signals. A beamformee may generate the requested feedback data for each RF channel band within the multichannel. The beamformee may generate a beamforming report, which comprises the feedback data, which is generated across the plurality of RF channel bands in the multichannel. The beamformee may transmit the beamforming report to the beamformer.
    • 提出了一种用于在多用户多输入多输出(MU-MIMO)通信系统中传送反馈信息的方法和系统。 在该方法和系统的一个方面,波束形成器站可将反馈信息请求传送到多个波束形成站。 反馈信息请求可以请求多个RF信道频带的反馈数据。 RF信道频带可以形成多信道。 波束形成器随后可以利用多声道内的RF信道频带发送多个信号。 每个波束形成器可以接收多个随后发送的信号。 波束形成器可以为多通道内的每个RF信道频带生成所请求的反馈数据。 波束形成器可以生成波束形成报告,其包括在多声道中跨多个RF信道频带产生的反馈数据。 波束形成器可以将波束形成报告发送到波束形成器。