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    Overall MU-MIMO capacity for users with unequal packet lengths in an MU-MIMO frame
    11.
    发明授权
    Overall MU-MIMO capacity for users with unequal packet lengths in an MU-MIMO frame 有权
    在MU-MIMO帧中具有不等长分组长度的用户的总MU-MIMO容量

    公开(公告)号：US09398598B2

    公开(公告)日：2016-07-19

    申请号：US14262328

    申请日：2014-04-25

    Applicant: Broadcom Corporation

    Inventor： David Garrett ,  Jun Zheng ,  Nihar Jindal

    IPC: H04W72/08 ,  H04W52/24

    CPC classification number: H04W72/085 ,  H04L1/0003 ,  H04W52/241

    Abstract: In some aspects, the disclosure is directed to methods and systems for transmitting packets (including but not limited to MU-MIMO packets). An access point communicating wirelessly with a plurality of devices can determine that a first packet for a first device of the plurality of devices has a first transmission duration. The access point can determine that a second packet for a second device of the plurality of devices has a second transmission duration shorter than the first transmission duration. The access point can adjust, based on the determination, a transmission power or a modulation and coding scheme to transmit the second packet during a third transmission duration. The third transmission duration can be greater than the second transmission duration.

    Abstract translation: 在一些方面，本公开涉及用于传送分组（包括但不限于MU-MIMO分组）的方法和系统。 与多个设备无线通信的接入点可以确定多个设备中的第一设备的第一分组具有第一传输持续时间。 接入点可以确定多个设备中的第二设备的第二分组具有比第一传输持续时间短的第二传输持续时间。 接入点可以基于确定调整在第三传输持续时间期间发送第二分组的传输功率或调制和编码方案。 第三传输持续时间可以大于第二传输持续时间。

    Supporting high dimensional MU-MIMO beamforming by sounding multiple frames with different sets of antenna patterns
    13.
    发明授权
    Supporting high dimensional MU-MIMO beamforming by sounding multiple frames with different sets of antenna patterns 有权
    通过用不同的天线图案组发现多个帧来支持高维MU-MIMO波束成形

    公开(公告)号：US09124317B1

    公开(公告)日：2015-09-01

    申请号：US14263766

    申请日：2014-04-28

    Applicant: Broadcom Corporation

    Inventor： David Garrett ,  Jun Zheng ,  Nihar Jindal

    IPC: H04B7/02 ,  H04B7/04 ,  H04L25/02 ,  H04B7/12 ,  H04L1/06

    CPC classification number: H04B7/0617 ,  H04B7/0408 ,  H04B7/0452 ,  H04B7/0626 ,  H04B7/12 ,  H04L1/06 ,  H04L1/0618 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/0228

    Abstract: In some aspects, the disclosure is directed to methods and systems for performing channel estimation between a beamformer and a beamformee. A beamformer can determine that a beamformee is configured to perform channel estimation for up to a pre-configured number of transmit spatial streams from the beamformer. The pre-configured number of transmit spatial streams can be less than a plurality of transmit spatial streams of the beamformer. The beamformer can determine a plurality of subsets of transmit spatial streams from the plurality of transmit spatial streams. The beamformer can send a plurality of sounding frames to the beamformee for channel estimation based at least on the determined plurality of subsets of transmit spatial streams.

    Abstract translation: 在一些方面，本公开涉及用于在波束形成器和波束形成器之间执行信道估计的方法和系统。 波束形成器可以确定波束形成器被配置为执行来自波束形成器的高达预配置数量的发射空间流的信道估计。 预配置的发射空间流数可以小于波束形成器的多个发射空间流。 波束形成器可以从多个发射空间流中确定发射空间流的多个子集。 波束形成器可以至少基于确定的多个传输空间流子集，向波束形成器发送多个探测帧用于信道估计。

    CHANNEL ESTIMATION USING A MULTI-USER FRAME
    14.
    发明申请
    CHANNEL ESTIMATION USING A MULTI-USER FRAME 有权
    使用多用户帧的信道估计

    公开(公告)号：US20150236770A1

    公开(公告)日：2015-08-20

    申请号：US14270975

    申请日：2014-05-06

    Applicant: Broadcom Corporation

    Inventor： David Garrett ,  Nihar Jindal ,  Jun Zheng ,  Srinath Puducheri Sundaravaradhan

    IPC: H04B7/04 ,  H04B7/06 ,  H04L25/02

    CPC classification number: H04B7/0617 ,  H04B7/0452 ,  H04B7/0619 ,  H04L25/0204 ,  H04L25/0226

    Abstract: A systems and method of channel estimation can be used in wireless environments. The systems and method can: (a) determine, by a transmitter, a number of receivers with which to communicate wirelessly, the number of receivers being at least one and corresponding to at least a first receiver; and (b) generate, by the transmitter, a frame to transmit to the first receiver, the frame generated based on a total number of receivers that is higher than the determined number of receivers.

    Abstract translation: 可以在无线环境中使用信道估计的系统和方法。 系统和方法可以：（a）由发射机确定与无线通信的接收机的数量，接收机的数目至少为一个，并对应于至少第一接收机; 和（b）由所述发射机产生一帧以发送给所述第一接收机，所述帧基于接收机总数高于所确定的接收机数量而生成。

    Peak to average power ratio (PAPR) reduction for repetition mode within single user, multiple user, multiple access, and/or MIMO wireless communication
    15.
    发明申请
    Peak to average power ratio (PAPR) reduction for repetition mode within single user, multiple user, multiple access, and/or MIMO wireless communication 有权
    在单用户，多用户，多路访问和/或MIMO无线通信中的重复模式的峰均功率比（PAPR）降低

    公开(公告)号：US20160269083A1

    公开(公告)日：2016-09-15

    申请号：US15161360

    申请日：2016-05-23

    Applicant: BROADCOM CORPORATION

    Inventor： Ron Porat ,  Jun Zheng

    IPC: H04B7/04 ,  H04L5/00

    CPC classification number: H04B7/0413 ,  H04B2201/70706 ,  H04L27/2621 ,  H04L27/2666 ,  H04W84/12 ,  Y02B80/50 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144

    Abstract: Selective processing of one or more packets to be transmitted from a wireless communication device to another wireless communication device is effective to reduce the peak to average power ratio (PAPR) of the transmission. The one or more packets are transmitted via two or more sub-bands of an available transmission medium. The number of coefficients or factors within that sequence corresponds to the number of sub-bands via which the one or more packets are to be transmitted. Also, a phase ramp or time-domain cyclic shift may be added to one or more of the packets after having undergone multiplication by one of the coefficients or factors within the sequence.

    Abstract translation: 要从无线通信设备发送到另一无线通信设备的一个或多个分组的选择性处理有效地降低传输的峰均功率比（PAPR）。 一个或多个分组经由可用传输介质的两个或多个子带传输。 该序列中的系数或因子的数量对应于要发送一个或多个分组的子带的数量。 而且，相位斜坡或时域循环移位可以在已经经过序列中的一个系数或因子的乘积之后被添加到一个或多个分组中。

    USING ONE OR MORE PAST CHANNEL ESTIMATES FOR ADJUSTING PARAMETERS, SENSING OBJECT PRESENCE, OR ALLOWING ASSOCIATION
    18.
    发明申请
    USING ONE OR MORE PAST CHANNEL ESTIMATES FOR ADJUSTING PARAMETERS, SENSING OBJECT PRESENCE, OR ALLOWING ASSOCIATION 有权
    使用一个或多个过去的通道估计来调整参数，感测对象存在或允许协会

    公开(公告)号：US20150237513A1

    公开(公告)日：2015-08-20

    申请号：US14268677

    申请日：2014-05-02

    Applicant: BROADCOM CORPORATION

    Inventor： David Garrett ,  Nihar Jindal ,  Jun Zheng

    IPC: H04W24/02 ,  H04L25/02

    CPC classification number: H04W24/02 ,  H04L25/0222 ,  H04L25/0224 ,  H04L25/0228 ,  H04W8/005 ,  H04W48/12

    Abstract: Systems and methods can analyze a present channel estimation and a previous channel estimation and/or two or more prior channel estimations to improve communication performance, sense environmental conditions, and make location and velocity determinations. The methods can include: (a) sending, by a transmitter, a first sounding frame and a second sounding frame to a receiver; (b) receiving, by the transmitter, a first channel estimation response from a receiver responsive to the first sounding frame, and a second channel estimation response from the receiver responsive to the second sounding frame; and (c) detecting, by the transmitter, based at least on the first channel estimation response and the second channel estimation response, if a change in characteristics of a channel between the transmitter and the receiver occurred between the first sounding frame and the second sounding frame.

    Abstract translation: 系统和方法可以分析当前信道估计和先前的信道估计和/或两个或多个先前的信道估计，以改善通信性能，感测环境条件，并进行位置和速度确定。 所述方法可以包括：（a）由发射机向接收机发送第一探测帧和第二探测帧; （b）由所述发射机响应于所述第一探测帧接收来自接收机的第一信道估计响应，以及响应于所述第二探测帧的来自所述接收机的第二信道估计响应; 以及（c）至少基于第一信道估计响应和第二信道估计响应，由发射机检测发射机和接收机之间的信道的特性的变化是否发生在第一探测帧和第二探测帧之间 帧。

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