公开(公告)号：US08902798B2

公开(公告)日：2014-12-02

申请号：US14077624

申请日：2013-11-12

Applicant: Marvell International Ltd.

Inventor： Hongyuan Zhang ,  Rohit U Nabar ,  Arul Durai Murugan Palanivelu ,  Hui-Ling Lou ,  Songping Wu

IPC: H04B7/00 ,  H04L1/00 ,  H04L27/26 ,  H04L27/00 ,  H04L25/02 ,  H04L5/00

CPC classification number: H04L27/2649 ,  H04L1/0072 ,  H04L1/0079 ,  H04L5/0007 ,  H04L5/0092 ,  H04L25/0204 ,  H04L25/022 ,  H04L27/0008 ,  H04L27/0012 ,  H04L27/2601 ,  H04L27/2602

Abstract: Systems and methods are provided for processing a payload portion of a received signal in a single carrier mode or a multiple carrier mode based on a portion of the received signal. A single carrier signaling portion is received at a first rate, and whether the payload portion of the signal is a single carrier signal or a multiple carrier signal is detected from the received single carrier signaling portion. The payload portion of the received signal is received at the first rate and demodulated in a single carrier mode if the detecting determines that the payload portion of the received signal is a single carrier signal, and the payload portion of the received signal is demodulated in a multiple carrier mode if the detecting determines that the payload portion of the received signal is a multiple carrier signal.

Abstract translation: 提供了系统和方法，用于基于接收信号的一部分，以单载波模式或多载波模式处理接收信号的有效载荷部分。 以第一速率接收单载波信令部分，以及信号的有效载荷部分是单载波信号还是从所接收的单载波信令部分检测多载波信号。 如果检测结果确定接收信号的有效载荷部分是单载波信号，则以第一速率接收接收信号的有效载荷部分并以单载波模式进行解调，并且接收信号的有效载荷部分被解调为 多载波模式，如果检测确定接收信号的有效载荷部分是多载波信号。

公开(公告)号：US08842571B1

公开(公告)日：2014-09-23

申请号：US14186997

申请日：2014-02-21

Applicant: Marvell International Ltd.

Inventor： Mao Yu ,  Hongyuan Zhang

IPC: H04L12/26 ,  H04W4/00

CPC classification number: H04L43/0852 ,  H04J3/0635 ,  H04L27/2662

Abstract: Methods, systems, and apparatus are described for processing a first field of a preamble of a data unit received by a communication device, the preamble including a second field that follows the first field in time. The embodiments described further include determining an estimated start of the second field of the preamble based on the processing of the first field, processing the second field of the preamble based on the estimated start of the second field, and determining an estimated time of arrival of the data unit at the communication device based on the processing of the second field of the preamble.

Abstract translation: 描述了用于处理由通信设备接收的数据单元的前导码的第一字段的方法，系统和装置，该前导码包括在第一字段之后的第二字段。 所描述的实施例还包括基于第一场的处理来确定前导码的第二字段的估计开始，基于估计的第二字段的开始来处理前导码的第二字段，以及确定估计的到达时间 基于前导码的第二字段的处理，在通信设备处的数据单元。

公开(公告)号：US08718176B1

公开(公告)日：2014-05-06

申请号：US13730393

申请日：2012-12-28

Applicant: Marvell International Ltd.

Inventor： Arul Durai Murugan Palanivelu ,  Hongyuan Zhang ,  Swaroop Venkatesh

IPC: H04B7/02 ,  H04L27/00

CPC classification number: H04B7/0456 ,  H04B7/0452 ,  H04B7/0617 ,  H04L27/2626

Abstract: In a method for generating steering matrices for beamforming, one or more subsets of one or more maximum transmit steering matrices are selected, where the maximum transmit steering matrices correspond to a maximum number of spatial streams able to be transmitted from a transmitter to a receiver. The subsets correspond to an actual number of spatial streams to be transmitted, and the subsets are applied to spatial streams to be transmitted. In an apparatus for generating steering matrices, a steering matrix calculator is configured to determine, from maximum transmit steering matrices, a plurality of steering coefficients corresponding to an actual number of spatial streams.

Abstract translation: 在用于生成用于波束形成的导引矩阵的方法中，选择一个或多个最大发射导引矩阵的一个或多个子集，其中最大发射导向矩阵对应于能够从发射机发射到接收机的最大数量的空间流。 子集对应于要发送的空间流的实际数量，并且子集被应用于要发送的空间流。 在用于产生导向矩阵的装置中，导引矩阵计算器被配置为从最大发射导向矩阵确定与实际数量的空间流相对应的多个转向系数。

公开(公告)号：US08630376B1

公开(公告)日：2014-01-14

申请号：US13947985

申请日：2013-07-22

Applicant: Marvell International Ltd.

Inventor： Hongyuan Zhang

IPC: H04L27/06

CPC classification number: H04B7/0417 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/086 ,  H04L5/0023 ,  H04L5/0091

Abstract: Cophasing angles for a plurality of antennas are received from a hardware device by one or more processors separate from the hardware device. When steering vector feedback is to be transmitted, the one or more processors generate the steering vector feedback based on the cophasing angles. When explicit channel state information (CSI) feedback is to be transmitted, the one or more processors generate the explicit CSI feedback using the cophasing angles.

Abstract translation: 通过与硬件设备分开的一个或多个处理器从硬件设备接收多个天线的相位角。 当要传送导向矢量反馈时，一个或多个处理器基于同相角产生导向矢量反馈。 当要发送显式信道状态信息（CSI）反馈时，一个或多个处理器使用同相角产生显式CSI反馈。

公开(公告)号：US20130315050A1

公开(公告)日：2013-11-28

申请号：US13953355

申请日：2013-07-29

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Hongyuan Zhang ,  Rohit U. Nabar ,  Peter Loc

IPC: H04B7/04

CPC classification number: H04B7/0426 ,  H04B7/0417 ,  H04B7/0443 ,  H04B7/0447 ,  H04B7/0632 ,  H04B7/0691 ,  H04B7/0817 ,  H04B7/0874 ,  H04L25/0202 ,  H04L25/0226 ,  H04L25/0228 ,  H04L27/2647 ,  H04W52/42

Abstract: A method of antenna selection, in a MIMO system in which a transmitter having a first plurality of RF chains communicates with a receiver having a second plurality of RF chains, includes transmitting consecutive sounding packets produced by the first plurality of RF chains. The consecutive sounding packets each include a training symbol, and collectively sound a full-size channel for the MIMO system. The method also includes receiving channel state information for each of a plurality of scaled sub-channel estimates determined at the receiver. The channel state information includes at least one of respective gain factors that were applied to the consecutive sounding packets received at the receiver and respective scaling factors that were applied to sub-channel estimates determined at the receiver. The method also includes adjusting power levels applied to the first plurality of RF chains in response to receiving the channel state information.

Abstract translation: 一种在MIMO系统中的天线选择方法，其中具有第一多个RF链的发射机与具有第二多个RF链的接收机通信包括发射由第一多个RF链产生的连续的探测分组。 连续的探测分组各自包括训练符号，并且共同地为MIMO系统发出全尺寸信道。 该方法还包括为在接收机处确定的多个缩放的子信道估计中的每一个接收信道状态信息。 信道状态信息包括应用于在接收机处接收到的连续探测分组的各个增益因子中的至少一个以及应用于在接收机处确定的子信道估计的各个缩放因子。 该方法还包括响应于接收到信道状态信息来调整应用于第一多个RF链的功率电平。

公开(公告)号：US11374683B1

公开(公告)日：2022-06-28

申请号：US16703352

申请日：2019-12-04

Applicant: Marvell International Ltd.

Inventor： B Hari Ram ,  Vijay Ahirwar ,  Sri Varsha Rottela ,  Hongyuan Zhang ,  Sudhir Srinivasa ,  Nilesh Khude

IPC: H04L1/00 ,  H04L5/00

Abstract: A communication device generates a legacy portion of a physical layer (PHY) preamble of a PHY data unit. The legacy portion includes a plurality of legacy training fields and a legacy signal field that indicates a duration of the PHY data unit. The communication device generates a non-legacy portion of the PHY preamble to include a multi-bit signal field header to indicate a packet type of the PHY data unit from among a plurality of packet types defined by a wireless communication protocol, the plurality of packet types corresponding to a plurality of non-legacy signal field formats. The communication device generates a non-legacy portion of the PHY preamble to also include a non-legacy signal field having a field format i) selected from the plurality of non-legacy signal field formats and ii) consistent with the packet type indicated by the multi-bit signal field header.

公开(公告)号：US11190305B1

公开(公告)日：2021-11-30

申请号：US16194139

申请日：2018-11-16

Applicant: Marvell International Ltd.

Inventor： Yakun Sun ,  Hongyuan Zhang ,  Liwen Chu ,  Hui-Ling Lou

IPC: H04L1/18 ,  H04L1/08 ,  H04B7/06

Abstract: Systems and methods are provided for introducing time diversity in a transmitter. The systems and methods may include receiving, at the transmitter, a request from a receiver to retransmit data. The systems and methods may further include receiving an input of data corresponding to the data requested for retransmission at a first transmitter block. The systems and methods may further include operating on the signals using the first transmitter block in at least one of a first mode and a second mode, such that an output of signals from the first transmitter block is dependent on a time-varying function and corresponds to the data requested by the receiver for retransmission.

公开(公告)号：US11044726B1

公开(公告)日：2021-06-22

申请号：US15867501

申请日：2018-01-10

Applicant: Marvell International Ltd.

Inventor： Liwen Chu ,  Xiayu Zheng ,  Hongyuan Zhang ,  Hui-Ling Lou

IPC: H04W72/04 ,  H04L5/00 ,  H04W84/12

Abstract: In a wireless communication network that operates according to a communication protocol that permits transmissions via multiple channels corresponding to multiple different frequency bandwidths, a communication device receives a packet via a first communication channel that spans a first frequency bandwidth. The communication device determines a second communication channel for transmitting an acknowledgment packet, the second communication channel spanning a second frequency bandwidth that is less than the first frequency bandwidth, the acknowledgment packet responsive to receiving the packet. The communication device transmits the acknowledgment packet via the second communication channel.

公开(公告)号：US10887837B1

公开(公告)日：2021-01-05

申请号：US16161961

申请日：2018-10-16

Applicant: Marvell International Ltd.

Inventor： Liwen Chu ,  Hongyuan Zhang ,  Hui-Ling Lou

IPC: H04W52/02 ,  H04W48/16 ,  H04W76/11 ,  H04B17/318 ,  H04W80/02 ,  H04W84/12

Abstract: A method, performed by a first communication device, for transmitting a wireless local area network (WLAN) packet to a WLAN network interface device of a second communication device is described. The second communication device includes a separate wakeup radio (WUR) coupled to the WLAN network interface device. The WLAN packet is generated at the first communication device to include a WUR identifier associated with a neighbor communication device. The WUR identifier is usable by the WUR of the second communication device to identify WUR packets transmitted by the neighbor communication device. The neighbor communication device is different from the first communication device. The WLAN packet is transmitted by the first communication device to the WLAN network interface device of the second communication device.

公开(公告)号：US10547487B1

公开(公告)日：2020-01-28

申请号：US15627163

申请日：2017-06-19

Applicant: Marvell International Ltd.

Inventor： Yan Zhang ,  Hongyuan Zhang ,  Sudhir Srinivasa

IPC: H04L27/34 ,  H04L27/38 ,  H04L27/36

Abstract: The present disclosure includes systems and techniques relating to an integer non-uniform constellation (NUC) high-order M-QAM. In some implementations, M is no less than 1024. Each of M constellation points of the integer NUC M-QAM has respective integer real and imaginary coordinates. A bit pattern is received and mapped to integer real and imaginary coordinates of one of the M constellation points according to a mapping rule of the integer NUC M-QAM. A transmission signal is modulated in accordance with the integer real and imaginary coordinates of the one of the M constellation points of the integer NUC M-QAM.