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公开(公告)号：US09680592B1
公开(公告)日：2017-06-13
申请号：US14685017
申请日：2015-04-13
Applicant: Marvell International LTD.
Inventor： Jungwon Lee
CPC classification number: H04J11/005 , H04B7/024 , H04B7/0404 , H04B7/0854 , H04L5/0032 , H04L5/0048 , H04W24/08 , H04W24/10
Abstract: A physical layer (PHY) device including a first module and a second module. The first module is configured to (i) measure noise based on signals received by the PHY device via a channel and (ii) generate information in response to measuring the noise based on the signals received by the PHY device via the channel. The second module is configured to determine, depending on whether the first module is able to (i) measure the noise based on the signals received by the PHY device via the channel and (ii) generate the information in response to measuring the noise based on the signals received by the PHY device via the channel, whether to estimate a gain of the channel using (i) a first procedure to estimate the gain of the channel or (ii) a second procedure to estimate the gain of the channel.
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12.发明授权公开(公告)号：US09450660B1
公开(公告)日：2016-09-20
申请号：US14671661
申请日：2015-03-27
Applicant: Marvell International Ltd.
Inventor： Jungwon Lee , Hui-Ling Lou
CPC classification number: H04B7/0617 , H04B7/0626 , H04L25/0204 , H04L25/021 , H04L25/0244 , H04W16/28 , H04W72/046 , H04W72/082
Abstract: Methods and apparatus are provided for directing a beam towards a receiving device in the presence of interference. A beam transmitted by a transmission source is received by a received device. The beam shape is affected by signals transmitted by interfering sources. The receiving device computes channel estimates associated with the transmission source and the interfering sources. A feedback signal that represents the channel estimates associated with the transmission and interfering sources is transmitted to the transmission source. The transmission source changes characteristics of the beam to compensate for the interference caused by the interfering sources. The transmission source may change the characteristics of the beam by performing precoding algorithms.
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13.发明授权公开(公告)号：US09282428B1
公开(公告)日：2016-03-08
申请号：US14248093
申请日：2014-04-08
Applicant: Marvell International Ltd.
Inventor： Jihwan P. Choi , Jungwon Lee
CPC classification number: H04W4/02 , H04W64/00 , H04W68/005 , H04W68/02
Abstract: Systems and techniques relating to wireless communications are described. A described technique includes transmitting to a wireless communication device a positioning request paging message, the positioning request paging message including a capability request, a location information request, or both; and receiving, during a connection establishment process, a connection message from the wireless communication device, the connection message including a positioning response that is responsive to the positioning request paging message.
Abstract translation: 描述与无线通信相关的系统和技术。 所描述的技术包括向无线通信设备发送定位请求寻呼消息，定位请求寻呼消息包括能力请求，位置信息请求或两者; 以及在连接建立过程期间从所述无线通信设备接收连接消息，所述连接消息包括响应于所述定位请求寻呼消息的定位响应。
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公开(公告)号：US09240867B1
公开(公告)日：2016-01-19
申请号：US14587686
申请日：2014-12-31
Applicant: Marvell International Ltd.
Inventor： Jungwon Lee , Woong Jun Jang , Hui-Ling Lou
CPC classification number: H04L1/08 , G06F11/10 , H04B7/0413 , H04B7/0885 , H04L1/0045 , H04L1/02 , H04L1/1845
Abstract: Systems and methods are provided for decoding signal vectors in multiple-input multiple-output (MIMO) systems, where the receiver has received one or more signal vectors from a common digital information sequence. Each received signal vector is decoded using, for example, a maximum-likelihood decoder to produce log-likelihood ratios. The results of the decoders are combined by addition to produce a final decoding estimate. In some embodiments, each of the received signals may be processed prior to decoding. The disclosed decoding scheme may utilize all received information without increasing hardware complexity.
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公开(公告)号：US09136890B1
公开(公告)日：2015-09-15
申请号：US14221828
申请日：2014-03-21
Applicant: MARVELL INTERNATIONAL LTD.
Inventor： Jungwon Lee , Jiwoong Choi , Yakun Sun
CPC classification number: H04B1/10 , H04L25/03891 , H04L2025/03426
Abstract: Systems, methods, and other embodiments associated with signal detection with an adjustable number of interfering signals. According to one embodiment an apparatus includes an interferer counter, a detection method selector, and a signal detector. The interferer counter is configured to identify a number of active interfering signals in a received signal. The detection method selector is configured to select a signal detection method based, at least in part, on the number of active interfering signals identified by the interferer counter. In this manner, when one interfering signal is identified, a detection method having a first order is selected; and when two interfering signals are identified, the detection method having a second order is selected. The signal detector is configured to process the received signal according to the signal detection method selected by the detection method selector to detect an intended signal in the received signal.
Abstract translation: 与可调节数量的干扰信号的信号检测相关的系统，方法和其它实施例。 根据一个实施例，一种装置包括干扰计数器，检测方法选择器和信号检测器。 干扰计数器被配置为识别接收信号中的多个有源干扰信号。 检测方法选择器被配置为至少部分地基于由干扰计数器识别的有源干扰信号的数量来选择信号检测方法。 以这种方式，当识别出一个干扰信号时，选择具有第一级的检测方法; 并且当识别出两个干扰信号时，选择具有二阶的检测方法。 信号检测器被配置为根据由检测方法选择器选择的信号检测方法处理接收信号，以检测接收信号中的预期信号。
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Patent Agency Ranking
公开(公告)号：US09025707B1
公开(公告)日：2015-05-05
申请号：US14052356
申请日：2013-10-11
Applicant: Marvell International Ltd.
Inventor： Yakun Sun , Jungwon Lee
CPC classification number: H04B7/0456 , H04L1/20 , H04L5/0023 , H04L25/03343 , H04L2025/03426 , H04L2025/03808
Abstract: Systems are provided for searching for a codeword from a plurality of codewords in a codebook for use in precoding, for example, as used in a multiple-input multiple-output (MIMO) transmission system. Dimension reduction techniques may be utilized to reduce the complexity and enhance the efficiency of the codebooks search. Null-spaces of an optimal codeword and codewords in a codebook may be computed. Distance values may be computed based on the null=spaces of the codewords. A codeword may be selected from the codebook based on a minimum distance value from the optimal codeword.
Abstract translation: 提供了用于在码本中的多个码字中搜索用于预编码的码字的系统，例如在多输入多输出（MIMO）传输系统中使用的系统。 可以利用尺寸减小技术来降低码本搜索的复杂性并提高码本搜索的效率。 可以计算码本中的最优码字和码字的空间。 距离值可以基于码字的空值=空值来计算。 可以基于来自最优码字的最小距离值从码本中选择码字。
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公开(公告)号：US08995584B1
公开(公告)日：2015-03-31
申请号：US14165335
申请日：2014-01-27
Applicant: Marvell International Ltd.
Inventor： Jiwoong P. Choi , Jungwon Lee , Hui-Ling Lou
CPC classification number: H04L1/0631 , H04B7/0413 , H04L1/0054 , H04L25/067 , H04L27/2647 , H04L27/34
Abstract: In a method of demodulating a signal transmitted via a multiple input multiple output (MIMO) communication channel, a data symbol vector is received at a communication device, the data vector comprising a plurality of data symbols that are received via a plurality of antennas. The received data symbol vector corresponds to a transmitted data symbol vector comprising a plurality of transmitted data symbols. A plurality of candidate vectors for the transmitted data symbol vector are generated at the communication device using a plurality of non-maximum likelihood detection techniques. One candidate vector is selected from the plurality of candidate vectors at the communication device using a maximum likelihood technique.
Abstract translation: 在解调通过多输入多输出（MIMO）通信信道发送的信号的方法中，在通信设备处接收数据符号向量，该数据向量包括经由多个天线接收的多个数据符号。 接收到的数据符号向量对应于包括多个发送的数据符号的发送数据符号向量。 使用多个非最大似然检测技术在通信设备处生成用于发送的数据符号向量的多个候选向量。 使用最大似然技术在通信装置处从多个候选向量中选择一个候选向量。
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18.发明授权公开(公告)号：US08982828B1
公开(公告)日：2015-03-17
申请号：US14206550
申请日：2014-03-12
Applicant: Marvell International Ltd.
Inventor： Jihwan P. Choi , Jungwon Lee
CPC classification number: H04L5/0044 , H04L1/0003 , H04L1/0009 , H04L1/0019 , H04L1/1829 , H04L5/0037
Abstract: Communication circuitry that employs persistent scheduling conventionally uses one initiation command to establish the modulation and coding scheme (“MCS”) that will be used for transmission of subsequent payload bursts, at least until it is time to send another initiation command. Inefficiency can result if transmission channel conditions change between initiation commands. To avoid such inefficiency, the disclosed circuitry maintains a count of unsuccessful transmission attempts. When the count deviates from a predetermined reference standard, the circuitry automatically and autonomously makes an appropriate change in the MCS selection without waiting for the next initiation command. Both transmitter and receiver circuits independently operate in the same way at the same time so that both ends of a communication link remain coordinated with one another.
Abstract translation: 采用持续调度的通信电路通常使用一个启动命令建立将用于后续有效载荷突发的传输的调制和编码方案（“MCS”），至少直到发送另一个启动命令为止。 如果传输通道条件在启动命令之间变化，则可能导致低效率。 为了避免这种低效率，所公开的电路保持不成功传输尝试的计数。 当计数偏离预定的参考标准时，电路自动并自主地进行MCS选择的适当改变，而不等待下一个启动命令。 发射机和接收机电路在相同的方式独立地以相同的方式操作，使得通信链路的两端保持彼此协调。
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19.发明授权公开(公告)号：US08971815B1
公开(公告)日：2015-03-03
申请号：US14257446
申请日：2014-04-21
Applicant: Marvell International Ltd.
Inventor： Jungwon Lee
CPC classification number: H04L27/0012 , H04L1/0003 , H04L1/0009 , H04L25/08 , H04L27/3405
Abstract: A sensing module determines whether a signal sensed in a wireless channel is noise or is modulated by a remote device and attempts to determine, in response to the signal being modulated, a modulation scheme of the signal. A capacity determination module determines capacities of the wireless channel to transmit data using a plurality of modulation schemes. In response to the modulation scheme of the signal being determinable, the plurality of modulation schemes includes the modulation scheme of the signal. In response to the modulation scheme of the signal being indeterminable, the plurality of modulation schemes includes one or more modulation schemes that the remote device is configured to use to modulate the signal. A transmit module selects a first modulation scheme of the plurality of modulation schemes based on the capacities of the wireless channel and transmits data over the wireless channel using the first modulation scheme.
Abstract translation: 感测模块确定在无线信道中感测的信号是否是噪声或由远程设备调制，并且尝试响应于被调制的信号来确定该信号的调制方案。 容量确定模块确定使用多个调制方案来发送数据的无线信道的容量。 响应于可被确定的信号的调制方案，多个调制方案包括信号的调制方案。 响应于信号的调制方案是不可确定的，多个调制方案包括远程设备被配置为用于调制信号的一个或多个调制方案。 发送模块基于无线信道的容量来选择多个调制方案的第一调制方案，并且使用第一调制方案通过无线信道发送数据。
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公开(公告)号：US08787505B1
公开(公告)日：2014-07-22
申请号：US14066191
申请日：2013-10-29
Applicant: Marvell International Ltd.
Inventor： Jungwon Lee , Hui-Ling Lou
IPC: H04L27/06
CPC classification number: H04L27/2655 , H04L27/2657 , H04L27/2675
Abstract: A system including a differential demodulation module that generates differentially demodulated signals based on having differentially demodulated received signals. A first summing module generates a combined signal, including a plurality of symbols, by adding the differentially demodulated signals. A second summing module generates a plurality of sums for each of a plurality of derived preamble sequences, which are derived from preamble sequences. Each of the derived preamble sequences includes a plurality of derived symbols. One of the plurality of sums generated for one of the derived preamble sequences is a sum of a first portion of one of the plurality of symbols of the combined signal and a second portion of one of the derived symbols of the one of the derived preamble sequences.
Abstract translation: 一种包括差分解调模块的系统，其基于具有差分解调的接收信号来产生差分解调信号。 第一求和模块通过加入差分解调信号来产生包括多个符号的组合信号。 第二求和模块为从前同步码序列导出的多个派生前同步码序列中的每一个生成多个和。 每个派生的前导序列包括多个导出的符号。 为所导出的前导码序列之一生成的多个和之一是组合信号的多个符号之一的第一部分和所导出的前导序列之一的导出符号之一的第二部分之和 。
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