Feedback method for virtual MIMO transmission in wireless ad-hoc communication system
    1.
    发明授权
    Feedback method for virtual MIMO transmission in wireless ad-hoc communication system 有权
    无线自组织通信系统中虚拟MIMO传输的反馈方法

    公开(公告)号:US08867639B2

    公开(公告)日:2014-10-21

    申请号:US13868651

    申请日:2013-04-23

    IPC分类号: H04K1/10 H04B7/04 H04B7/02

    CPC分类号: H04B7/0417 H04B7/024

    摘要: A method for communicating between first multiple nodes and second multiple nodes in a wireless communication system is disclosed. The second multiple nodes may perform a first local sharing procedure for a virtual MIMO (Multiple Input Multiple Output) feedback during a first predetermined time. And then, the second multiple nodes may transmit feedback of channel status information to the first multiple nodes during an integer multiple of a second predetermined time. Finally, the first multiple nodes may perform a second local sharing procedure for the virtual MIMO feedback during the first predetermined time.

    摘要翻译: 公开了一种用于在无线通信系统中的第一多个节点和第二个多个节点之间进行通信的方法。 第二多个节点可以在第一预定时间期间为虚拟MIMO(多输入多输出)反馈执行第一本地共享过程。 然后,第二多个节点可以在第二预定时间的整数倍期间向第一多个节点发送信道状态信息的反馈。 最后,第一多个节点可以在第一预定时间期间为虚拟MIMO反馈执行第二本地共享过程。

    MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding
    2.
    发明授权
    MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding 有权
    MIMO预编码使得能够进行空间复用,功率分配和自适应调制和编码

    公开(公告)号:US09154202B2

    公开(公告)日:2015-10-06

    申请号:US13556124

    申请日:2012-07-23

    摘要: In a closed-loop wireless communication system, a codebook-based feedback mechanism is provided to enable non-unitary precoding for multi-stream transmission, where in each stream is optimized with suitable transmission power allocation and AMC. The codebook-based feedback mechanism uses a precoding codebook having a power allocation matrix which is constrained to specify that beamforming always applies full power to a predetermined beam. With this constraint, a one-bit power allocation feedback index may be used to switch between beamforming and spatial multiplexing.

    摘要翻译: 在闭环无线通信系统中,提供基于码本的反馈机制,以实现用于多流传输的非单位预编码,其中在每个流中以合适的传输功率分配和AMC进行优化。 基于码本的反馈机制使用具有功率分配矩阵的预编码码本,该功率分配矩阵被约束以规定波束成形总是对预定波束施加全部功率。 利用该约束,可以使用一位功率分配反馈索引来在波束形成和空间复用之间切换。

    Method for interference alignment in wireless network
    3.
    发明授权
    Method for interference alignment in wireless network 有权
    无线网络干扰对准方法

    公开(公告)号:US08843166B2

    公开(公告)日:2014-09-23

    申请号:US13575285

    申请日:2011-02-01

    IPC分类号: H04B15/00

    摘要: A method for interference alignment in wireless network having 3 transmitters and 3 receivers which are equipped with M antennas is provided. The method comprising: transmitting, performed by each of the 3 transmitters, a pilot signal known to the 3 receivers; estimating, performed by each of the 3 receivers, each channel from transmitter; transmitting, performed by each of the 3 receivers, feedback information to target transmitter; and determining, performed by transmitter 2 and transmitter 3, a precoding vector; wherein a degree of freedom (DoF) of a transmitter 1 is (M/2−α), a DoF of the transmitter 2 or the transmitter 3 is M/2.

    摘要翻译: 提供了一种具有3个发射机和3个接收机的无线网络中的配备M个天线的干扰对准方法。 该方法包括:由3个发射机中的每一个发送由3个接收机已知的导频信号; 估计,由3个接收机中的每一个执行,来自发射机的每个信道; 由3个接收机中的每一个发送,向目标发射机发送反馈信息; 并由发射机2和发射机3确定预编码向量; 其中发射机1的自由度(DoF)为(M / 2-α),发射机2或发射机3的DoF为M / 2。

    MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding
    4.
    发明授权
    MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding 有权
    MIMO预编码使得能够进行空间复用,功率分配和自适应调制和编码

    公开(公告)号:US08229019B2

    公开(公告)日:2012-07-24

    申请号:US12762013

    申请日:2010-04-16

    IPC分类号: H04L27/10

    摘要: In a closed-loop wireless communication system, a codebook-based feedback mechanism is provided to enable non-unitary precoding for multi-stream transmission, where in each stream is optimized with suitable transmission power allocation and AMC. The codebook-based feedback mechanism uses a precoding codebook having a power allocation matrix which is constrained to specify that beamforming always applies full power to a predetermined beam. With this constraint, a one-bit power allocation feedback index may be used to switch between beamforming and spatial multiplexing.

    摘要翻译: 在闭环无线通信系统中,提供基于码本的反馈机制,以实现用于多流传输的非单位预编码,其中在每个流中以合适的传输功率分配和AMC进行优化。 基于码本的反馈机制使用具有功率分配矩阵的预编码码本,该功率分配矩阵被约束以规定波束成形总是对预定波束施加全部功率。 利用该约束,可以使用一位功率分配反馈索引来在波束形成和空间复用之间切换。

    MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding
    5.
    发明授权
    MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding 有权
    MIMO预编码使得能够进行空间复用,功率分配和自适应调制和编码

    公开(公告)号:US07702029B2

    公开(公告)日:2010-04-20

    申请号:US11537902

    申请日:2006-10-02

    IPC分类号: H04B7/02

    摘要: In a closed-loop wireless communication system, a codebook-based feedback mechanism is provided to enable non-unitary precoding for multi-stream transmission, where in each stream is optimized with suitable transmission power allocation and AMC. The codebook-based feedback mechanism uses a precoding codebook having a power allocation matrix which is constrained to specify that beamforming always applies full power to a predetermined beam. With this constraint, a one-bit power allocation feedback index may be used to switch between beamforming and spatial multiplexing.

    摘要翻译: 在闭环无线通信系统中,提供基于码本的反馈机制,以实现用于多流传输的非单位预编码,其中在每个流中以合适的传输功率分配和AMC进行优化。 基于码本的反馈机制使用具有功率分配矩阵的预编码码本,该功率分配矩阵被约束以规定波束成形总是对预定波束施加全部功率。 利用该约束,可以使用一位功率分配反馈索引来在波束形成和空间复用之间切换。

    METHOD FOR INTERFERENCE ALIGNMENT IN WIRELESS NETWORK
    7.
    发明申请
    METHOD FOR INTERFERENCE ALIGNMENT IN WIRELESS NETWORK 有权
    无线网络干扰对齐方法

    公开(公告)号:US20120289267A1

    公开(公告)日:2012-11-15

    申请号:US13575285

    申请日:2011-02-01

    IPC分类号: H04B15/00

    摘要: A method for interference alignment in wireless network having 3 transmitters and 3 receivers which are equipped with M antennas is provided. The method comprising: transmitting, performed by each of the 3 transmitters, a pilot signal known to the 3 receivers; estimating, performed by each of the 3 receivers, each channel from transmitter; transmitting, performed by each of the 3 receivers, feedback information to target transmitter; and determining, performed by transmitter 2 and transmitter 3, a precoding vector; wherein a degree of freedom(DoF) of a transmitter 1 is (M/2−α), a DoF of the transmitter 2 or the transmitter 3 is M/2.

    摘要翻译: 提供了一种具有3个发射机和3个接收机的无线网络中的配备M个天线的干扰对准方法。 该方法包括:由3个发射机中的每一个发送由3个接收机已知的导频信号; 估计,由3个接收机中的每一个执行,来自发射机的每个信道; 由3个接收机中的每一个发送,向目标发射机发送反馈信息; 并由发射机2和发射机3确定预编码向量; 其中发射机1的自由度(DoF)为(M / 2-α),发射机2或发射机3的DoF为M / 2。

    Feedback scheduling to reduce feedback rates in MIMO systems
    9.
    发明授权
    Feedback scheduling to reduce feedback rates in MIMO systems 有权
    反馈调度以减少MIMO系统中的反馈速率

    公开(公告)号:US08675743B2

    公开(公告)日:2014-03-18

    申请号:US11833669

    申请日:2007-08-03

    IPC分类号: H04L27/28

    摘要: In a closed-loop wireless communication system, a codebook-based feedback control mechanism is provided where feedback from each of a plurality of receivers is scheduled to control the feedback so that the receiving devices do not needlessly feed back precoding information to the transmitting device. The feedback may be controlled by establishing and distributing a schedule to control when each receiver feeds back precoding information, or by establishing and distributing a metric-based feedback threshold that must be satisfied before feedback is permitted.

    摘要翻译: 在闭环无线通信系统中,提供基于码本的反馈控制机制,其中来自多个接收机中的每一个的反馈被调度以控制反馈,使得接收设备不必要地将预编码信息反馈给发送设备。 可以通过建立和分发调度来控制反馈,以控制何时每个接收机反馈预编码信息,或者通过建立和分发在允许反馈之前必须满足的基于度量的反馈阈值。

    POWER CONTROL METHOD FOR INTERFERENCE ALIGNMENT IN WIRELESS NETWORK
    10.
    发明申请
    POWER CONTROL METHOD FOR INTERFERENCE ALIGNMENT IN WIRELESS NETWORK 有权
    无线网络干扰对齐功率控制方法

    公开(公告)号:US20120302280A1

    公开(公告)日:2012-11-29

    申请号:US13576385

    申请日:2011-02-01

    IPC分类号: H04W52/04

    摘要: A power control method for interference alignment in wireless network having K transmitters and K receivers is provided. The method comprising: receiving, performed by receiver n (n is an integer, 1≦n≦K−1), a power indication signal of transmitter n+1 from the transmitter n+1; determining, performed by the receiver n, power of transmitter n; and transmitting, performed by the receiver n, a power indication signal of transmitter n to the transmitter n, wherein the power of transmitter n is determined based on a residual interference of the receiver n, and the power indication signal of transmitter n indicates a minimum transmission power or a maximum transmission power of transmitter n.

    摘要翻译: 提供了一种用于具有K个发射机和K个接收机的无线网络中的干扰对准的功率控制方法。 该方法包括:由发射机n + 1发射机n + 1的功率指示信号由接收机n(n为整数,1≦̸ n≦̸ K-1) 确定由接收机n执行的发射机n的功率; 并且由接收机n执行发射机n的功率指示信号到发射机n,其中,基于接收机n的残余干扰来确定发射机n的功率,并且发射机n的功率指示信号表示最小 发射功率或发射机n的最大发射功率。