公开(公告)号：US09673905B1

公开(公告)日：2017-06-06

申请号：US14661948

申请日：2015-03-18

Applicant: Marvell International Ltd.

Inventor： Jin Zhang ,  Kok-Wui Cheong

IPC: H04B10/27 ,  H04L27/26 ,  H04L25/02 ,  H04J14/00

CPC classification number: H04B10/27 ,  H04L25/02 ,  H04L27/26 ,  H04L27/2656 ,  H04L27/2671 ,  H04L27/2675

Abstract: According to various embodiments, a method for demarcating data bursts includes receiving, via a coax network, a first data burst and a second data burst at a network interface device, wherein the first data burst and the second data burst at least partially overlap in the time domain. In various embodiments, the first data burst includes a start marker, first data elements following the start marker, and an end marker following the first data elements. In various embodiments, the start marker is orthogonal to the end marker. The method further includes distinguishing, at the network interface device, the first data burst from the second data burst based on the start marker and the end marker; and transmitting the first data burst and the second data burst via an optical network such that the first data burst and the second data burst do not overlap in time.

公开(公告)号：US10277325B1

公开(公告)日：2019-04-30

申请号：US15614145

申请日：2017-06-05

Applicant: Marvell International Ltd.

Inventor： Jin Zhang ,  Kok-Wui Cheong

IPC: H04B15/00 ,  H04B10/079 ,  H04B7/208 ,  H04Q11/00 ,  H04J14/08 ,  H04B10/27

Abstract: According to various embodiments, a method for demarcating data bursts includes receiving, via a coax network, a first data burst and a second data burst at a network interface device, wherein the first data burst and the second data burst at least partially overlap in the time domain. In various embodiments, the first data burst includes a start marker, first data elements following the start marker, and an end marker following the first data elements. In various embodiments, the start marker is orthogonal to the end marker. The method further includes distinguishing, at the network interface device, the first data burst from the second data burst based on the start marker and the end marker; and transmitting the first data burst and the second data burst via an optical network such that the first data burst and the second data burst do not overlap in time.

公开(公告)号：US09608905B1

公开(公告)日：2017-03-28

申请号：US14333444

申请日：2014-07-16

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Jin Zhang ,  Xiaolin Che ,  Yuji Meng ,  Yicheng Chen ,  Gang Wang ,  Kok-Wui Cheong

IPC: H04L12/741 ,  H04L27/26 ,  H04W74/08 ,  H04W56/00 ,  H04L1/00 ,  H04L12/28

CPC classification number: H04L27/265 ,  H04L1/0001 ,  H04L27/2627 ,  H04L27/2662 ,  H04L47/2483 ,  H04L2012/2843 ,  H04W56/0005 ,  H04W74/0808

Abstract: A packet is detected in an input data stream. A stream of fast Fourier transform (FFT) blocks are scanned for a plurality of candidate symbols for a preamble of the packet. The stream of FFT blocks correspond to the input data stream. A symbol boundary is detected between adjacent candidate symbols of the plurality of candidate symbols. The FFT blocks are aligned with the symbol boundary. A transition boundary is detected between different adjacent candidate symbols of the preamble based on the detected symbol boundary. A packet detection indication is provided based on the detected transition boundary.

公开(公告)号：US09521025B1

公开(公告)日：2016-12-13

申请号：US14730479

申请日：2015-06-04

Applicant: Marvell International Ltd.

Inventor： Jin Zhang ,  Kok-Wui Cheong

IPC: H04B10/00 ,  H04L27/26 ,  H04B10/27 ,  H04B10/2575

CPC classification number: H04L27/2647 ,  H04B10/60 ,  H04L5/003 ,  H04L25/4923 ,  H04L27/2613 ,  H04L27/2663 ,  H04L27/2671 ,  H04L27/2675 ,  H04L27/2697

Abstract: Systems and methods for detection of a ternary sequence are provided. An example apparatus includes a receiver configured to receive an OFDM signal comprising a plurality of OFDM Resource Elements (REs). A processor is coupled to the receiver and is configured to detect a presence of a known ternary sequence in the received OFDM signal. The processor is configured to detect the ternary sequence by determining a correlation between a first set of the OFDM REs and a first set of symbols of the ternary sequence. A power of each RE of a second set of the OFDM REs is determined. A sum of the powers is determined. A detection value is based on the correlation and the sum. The ternary sequence is determined to be present in the signal based on a comparison of the detection value to a threshold.

Abstract translation: 提供了用于检测三元序列的系统和方法。 一种示例性装置包括：接收器，被配置为接收包括多个OFDM资源元素（RE）的OFDM信号。 处理器耦合到接收器，并且被配置为检测接收的OFDM信号中已知三元序列的存在。 处理器被配置为通过确定第一组OFDM RE和第三组序列的第一组符号之间的相关性来检测三进制序列。 确定第二组OFDM RE的每个RE的功率。 权力的总和是确定的。 检测值基于相关性和总和。 基于检测值与阈值的比较，确定三态序列存在于信号中。

公开(公告)号：US09106300B1

公开(公告)日：2015-08-11

申请号：US14516848

申请日：2014-10-17

Applicant: Marvell International Ltd.

Inventor： Yuji Meng ,  Yicheng Chen ,  Jin Zhang ,  Kok-Wui Cheong

IPC: H04B1/10 ,  H04B17/00

CPC classification number: H04B1/1036 ,  H04B17/345 ,  H04B2001/1072

Abstract: Aspects of the disclosure provide a method for detecting interference. The method includes receiving a plurality of frequency components of a signal received at a first device, identifying, among the plurality of frequency components, first frequency components that are not corrupted by interference, determining a noise power threshold based on the first frequency components, and comparing powers of the plurality of frequency components with the noise power threshold to determine second frequency components to be suppressed during decoding of the signal.

Abstract translation: 本公开的方面提供了一种用于检测干扰的方法。 该方法包括接收在第一设备处接收的信号的多个频率分量，在多个频率分量中识别未被干扰破坏的第一频率分量，基于第一频率分量确定噪声功率阈值，以及 将多个频率分量的功率与噪声功率阈值进行比较，以确定在信号解码期间要抑制的第二频率分量。

公开(公告)号：US09253122B1

公开(公告)日：2016-02-02

申请号：US13686039

申请日：2012-11-27

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Jin Zhang ,  Kok-Wui Cheong

IPC: H04L12/931

CPC classification number: H04L49/405 ,  H04B3/54 ,  H04B3/544

Abstract: Systems, methods, and other embodiments associated with using a preamble with at least two polarity transitions to communicate over a power line channel are described. According to one embodiment, an apparatus includes a transmitter configured to transmit a communication signal on a communication channel for communicating with a remote device. The communication channel is a power line channel that carries electric power transmissions. The apparatus also includes a transmission logic configured to control the transmitter to generate at least two polarity transitions in a preamble of the communication signal.

Abstract translation: 描述了与使用具有至少两个极性转换的前导码相关联的系统，方法和其它实施例以通过电力线信道进行通信。 根据一个实施例，一种装置包括：发射机，被配置为在通信信道上发送通信信号，用于与远程设备进行通信。 通信信道是承载电力传输的电力线路。 该装置还包括被配置为控制发射机在通信信号的前导码中产生至少两个极性转换的传输逻辑。