公开(公告)号：US09584255B1

公开(公告)日：2017-02-28

申请号：US14556567

申请日：2014-12-01

Applicant: Marvell International LTD.

Inventor： Songping Wu

IPC: H04L1/00

CPC classification number: H04L1/0013 ,  H04L1/0002 ,  H04L1/08

Abstract: A first network device including a medium access control module and a physical layer module. The medium access control module is configured to generate a frame to include a first header, a second header and a payload. The first header indicates a start of the frame for a second network device. The second header indicates a length of the payload for the second network device. The payload comprises a third header and data. Other than the payload, a format of the frame complies with IEEE 802.15.4. The physical layer module is configured to: receive the frame; repetition code the third header or repetition code the data; generate a signal including (i) the first header, (ii) the second header, and (iii) the repetition coded third header or the repetition coded data; modulate the signal; and transmit the modulated signal to the second network device.

Abstract translation: 一种包括介质访问控制模块和物理层模块的第一网络设备。 介质访问控制模块被配置为生成包括第一报头，第二报头和有效载荷的帧。 第一标题指示第二网络设备的帧的开始。 第二标题指示第二网络设备的有效载荷的长度。 有效载荷包括第三标题和数据。 除了有效载荷之外，帧的格式符合IEEE 802.15.4。 物理层模块被配置为：接收帧; 重复代码第三个标题或重复代码的数据; 产生包括（i）第一标题，（ii）第二标题和（iii）重复编码的第三标题或重复编码数据的信号; 调制信号; 并将调制信号发送到第二网络设备。

公开(公告)号：US08976905B1

公开(公告)日：2015-03-10

申请号：US14169317

申请日：2014-01-31

Applicant: Marvell International Ltd.

Inventor： Quan Zhou ,  Songping Wu ,  Hui-Ling Lou

IPC: H04L27/22 ,  H04B1/10

CPC classification number: H04B1/1027 ,  H03D3/22 ,  H04L27/0014 ,  H04L27/156 ,  H04L27/16

Abstract: A robust differential receiver is described that may be used in any frequency modulated system, including short-range radio frequency (RF) communication devices. The differential receiver provides a preamble detection approach that reduces false preamble detection, a fine carrier frequency (CFO) estimation approach that provides an extended estimation range, and robust in-band and out-of-band interference detection. The described differential receiver assures that preamble detections are not falsely triggered, and that CFO estimates are based on accurately modeled preamble waveforms that have not been distorted by phase ambiguities or in-band distortion. In this manner, the described robust differential receiver assures that CFO estimates used to compensate remaining portions of detected signals are accurate, thereby reducing the likelihood that remaining portions of the detected signal will be affected by phase ambiguity distortions, thereby enhancing the differential receiver's ability to lock onto an otherwise unavailable communication channel, and/or reducing transmission errors and/or packet loss.

Abstract translation: 描述了可用于包括短距离射频（RF）通信设备在内的任何调频系统中的鲁棒差分接收机。 差分接收机提供减少伪前导码检测的前导码检测方法，提供扩展估计范围的精细载波频率（CFO）估计方法以及鲁棒带内和带外干扰检测。 所描述的差分接收器确保前导码检测不被错误触发，并且CFO估计基于没有被相位模糊或带内失真扭曲的精确建模的前导码波形。 以这种方式，所描述的鲁棒差分接收机确保用于补偿检测到的信号的剩余部分的CFO估计是准确的，从而降低检测信号的剩余部分将受相位模糊度失真影响的可能性，从而增强差分接收机的能力 锁定到否则不可用的通信信道，和/或减少传输错误和/或分组丢失。

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：US08811462B1

公开(公告)日：2014-08-19

申请号：US13942255

申请日：2013-07-15

Applicant: Marvell International Ltd.

Inventor： Qing Zhao ,  Jungwon Lee ,  Leilei Song ,  Songping Wu ,  Hui-Ling Lou

IPC: H04B3/46 ,  H04B17/00 ,  H04Q1/20

CPC classification number: H04L27/2656 ,  H04L27/2676

Abstract: A receiver device detects a plurality of symbols in a signal and determines, based on the one of the plurality of detected symbols, an estimated beginning of a subsequent frame. The receiver device determines whether the estimated start of the subsequent frame corresponds to an actual start of the subsequent frame. When the estimated start of the subsequent frame corresponds to the actual start of the subsequent frame, the receiver is synchronized to the actual start of the frame. When the estimated start of the subsequent frame does not corresponds to the actual start of the subsequent frame, the receiver device determines, based on a further one of the plurality of detected symbols, an estimated beginning of another subsequent frame. The receiver device determines whether the estimated start of the other subsequent frame corresponds to an actual start of the other subsequent frame.

Abstract translation: 接收机设备检测信号中的多个符号，并且基于多个检测符号中的一个确定后续帧的估计开始。 接收机设备确定后续帧的估计开始是否对应于后续帧的实际开始。 当后续帧的估计开始对应于后续帧的实际开始时，接收机与帧的实际开始同步。 当后续帧的估计开始不对应于后续帧的实际开始时，接收机设备基于多个检测到的符号中的另一个确定另一后续帧的估计开始。 接收机设备确定其他后续帧的估计开始是否对应于另一个后续帧的实际开始。

公开(公告)号：US10212019B1

公开(公告)日：2019-02-19

申请号：US16113972

申请日：2018-08-27

Applicant: Marvell International Ltd.

Inventor： Hongyuan Zhang ,  Hui-Ling Lou ,  Songping Wu

IPC: H04L5/12 ,  H04L23/02 ,  H04L27/34 ,  H04L5/00 ,  H04L25/02 ,  H04L27/26

Abstract: A communication device determines an estimate of a communication channel, and determines, based on the estimate of the communication channel, a plurality of pairs of modulation schemes and encoding schemes to be used for a packet, including: i) determining, for a first set of adjacent orthogonal frequency division multiplexing (OFDM) subcarriers, a first pair of a modulation scheme and an encoding scheme; and ii) determining, for a second set of adjacent OFDM subcarriers, a second pair of a modulation scheme and an encoding scheme, the second pair being different than the first pair. The communication device generates the packet for transmission, wherein i) all data modulated on the first set of adjacent OFDM subcarriers is modulated and encoded using the first pair, and ii) all data modulated on the second set of adjacent OFDM subcarriers is modulated and encoded using the second pair.

公开(公告)号：US10063402B1

公开(公告)日：2018-08-28

申请号：US15451177

申请日：2017-03-06

Applicant: Marvell International Ltd.

Inventor： Hongyuan Zhang ,  Hui-Ling Lou ,  Songping Wu

IPC: H04L5/12 ,  H04L23/02 ,  H04L27/34 ,  H04L25/02 ,  H04L5/00

CPC classification number: H04L27/34 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/006 ,  H04L25/0204 ,  H04L25/0262 ,  H04L27/2647 ,  H04L27/2657

Abstract: A communication device determines an estimate of a communication channel, and determines, based on the estimate of the communication channel, a plurality of bit rates to be used for a data unit, including: determining a first bit rate for a first set of one or more orthogonal frequency division multiplexing (OFDM) subcarriers, and determining a second bit rate for a second set of one or more OFDM subcarriers, the second bit rate being different than the first bit rate. The communication device generates the data unit for transmission, wherein i) all data modulated on the first set of one or more OFDM subcarriers corresponds to the first bit rate and ii) all data modulated on the second set of one or more OFDM subcarriers corresponds to the second bit rate.

公开(公告)号：US09294941B1

公开(公告)日：2016-03-22

申请号：US14672283

申请日：2015-03-30

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Songping Wu ,  Quan Zhou ,  Manyuan Shen ,  Hongyuan Zhang ,  Hui-Ling Lou

IPC: H04K1/02 ,  H04L25/03 ,  H04L25/49 ,  H04W24/02 ,  H04L27/20

CPC classification number: H04W24/02 ,  H04K1/006 ,  H04K1/10 ,  H04L25/49 ,  H04L27/20

Abstract: Devices, systems, methods, and other embodiments associated with phase based transformation of repeated signals are described. In one embodiment, an apparatus includes duplication logic configured to duplicate a string of data to form a duplicate string of data. Transformation logic is configured to modify phases associated with the string of data to generate a modified string of data. Signal generation logic is configured to generate a signal for wireless transmission where the signal having at least the modified string of data and the duplicate string of data.

公开(公告)号：US09107153B1

公开(公告)日：2015-08-11

申请号：US13776538

申请日：2013-02-25

Applicant: Marvell International Ltd.

Inventor： Ming Lin ,  Songping Wu ,  Quan Zhou

IPC: H04J3/06 ,  H04W56/00 ,  H04B7/26

CPC classification number: H04W56/00 ,  H04B1/7073 ,  H04B1/7087 ,  H04B7/2643 ,  H04B2201/7073

Abstract: Systems and techniques relating to wireless communications are described. A described technique includes receiving a signal via a wireless channel, performing code synchronization by at least using a peak counter to count peak correlations based on the signal and a known preamble, performing frequency synchronization based on the signal, and using, based on a successful completion of the code synchronization, at least a result of the frequency synchronization to demodulate data from the signal. The technique includes starting the frequency synchronization during the code synchronization when an output value of the peak counter satisfies a predetermined criterion.

Abstract translation: 描述与无线通信相关的系统和技术。 所描述的技术包括经由无线信道接收信号，至少使用峰值计数器来执行代码同步，以基于该信号和已知的前导码对峰值相关性进行计数，基于该信号执行频率同步，并且基于成功 完成代码同步，至少是频率同步的结果来解调来自信号的数据。 该技术包括当峰值计数器的输出值满足预定标准时，在代码同步期间启动频率同步。

公开(公告)号：US09991941B1

公开(公告)日：2018-06-05

申请号：US14451248

申请日：2014-08-04

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Songping Wu ,  Manyuan Shen ,  Quan Zhou ,  Hongyuan Zhang ,  Hui-Ling Lou

IPC: H04B7/06 ,  H04B7/0417 ,  H01Q3/40 ,  H01Q3/26

CPC classification number: H04B7/0617 ,  H01Q3/2605 ,  H01Q3/40 ,  H04B7/0417 ,  H04B7/0634 ,  H04B7/088

Abstract: A plurality of received signals are received at a first communication device, the plurality of received signals corresponding to at least one training signal having been transmitted by a second communication device a plurality of times via a plurality of antennas by the second communication device applying a respective antenna weight vector from a plurality of different antenna weight vectors each time the at least one training signal is transmitted. The first communication device generates a transmitter antenna weight vector based on a mathematical combination of at least i) the plurality of received signals, ii) the antenna weight vectors applied by the second communication device when transmitting the at least one training signal the plurality of times, and iii) the at least one training signal. The first communication device transmits the transmitter antenna weight vector to the second communication device.

公开(公告)号：US09420594B1

公开(公告)日：2016-08-16

申请号：US14550511

申请日：2014-11-21

Applicant: Marvell International Ltd.

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

IPC: H04L27/28 ,  H04W72/08 ,  H04W88/06 ,  H04W24/10 ,  H04L27/26

CPC classification number: H04W72/085 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/0069 ,  H04L5/0085 ,  H04L25/0204 ,  H04L25/0228 ,  H04L27/0008 ,  H04L27/261 ,  H04W24/10 ,  H04W88/06

Abstract: Methods and apparatus are provided for adaptively selecting a communications mode in high frequency systems. A first dual-mode device having capabilities of using two or more high frequency communications modes, such as OFDM and SC modulation, may transmit a signal to a second dual-mode device with the same capabilities. The second dual-mode device may compute a channel characteristic associated with a high frequency communications channel and select an optimal high frequency communications mode. The second dual-mode device may transmit information indicative of the channel characteristic or the selected communications mode to the first dual-mode device. The first dual-mode device may select and operate using the optimal high frequency communications mode based on the information received from the second dual-mode device. The first and second dual-mode devices may communicate using the selected high frequency communications mode.

Abstract translation: 提供了用于在高频系统中自适应地选择通信模式的方法和装置。 具有使用诸如OFDM和SC调制之类的两个或多个高频通信模式的能力的第一双模设备可以将信号发送到具有相同能力的第二双模设备。 第二双模设备可以计算与高频通信信道相关联的信道特性并选择最佳高频通信模式。 第二双模设备可以向第一双模设备发送指示信道特性或所选通信模式的信息。 第一双模设备可以基于从第二双模设备接收的信息，使用最佳高频通信模式来选择和操作。 第一和第二双模式设备可以使用所选择的高频通信模式进行通信。