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31. 发明授权

US09001910B1 Systems and methods for estimating decoder noise power in OFDM systems 有权
标题翻译： OFDM系统中解码器噪声功率估计的系统和方法
公开(公告)号：US09001910B1
公开(公告)日：2015-04-07
申请号：US14250787
申请日：2014-04-11
申请人： Marvell International Ltd.
发明人： Jiwoong Choi , Yakun Sun , Jungwon Lee , Jianyi Huang
IPC分类号： H04K1/10 , H04B7/04 , H04L1/00 , H04L25/02
CPC分类号： H04B7/0413 , H04L1/0036 , H04L25/0202 , H04L25/0204 , H04L27/2647
摘要： Systems and methods for computing a decoder noise power estimate are provided. A pilot signal transmitted through a fading channel from a wireless transmission source is received. Signal power of the received pilot signal, channel noise power, and channel estimation error are computed. The decoder noise power estimate is determined based on the computed signal power, channel noise power, and channel estimation error.
摘要翻译：提供了用于计算解码器噪声功率估计的系统和方法。接收通过衰落信道从无线发送源发送的导频信号。计算接收到的导频信号的信号功率，信道噪声功率和信道估计误差。基于所计算的信号功率，信道噪声功率和信道估计误差来确定解码器噪声功率估计。

32. 发明授权

US08923156B1 Quality of service aware channel quality indicator 有权
标题翻译：服务质量意识渠道质量指标
公开(公告)号：US08923156B1
公开(公告)日：2014-12-30
申请号：US14014869
申请日：2013-08-30
申请人： Marvell International Ltd.
发明人： Jungwon Lee , Jihwan P. Choi , Yakun Sun
IPC分类号： H04W24/00 , H04W24/08
CPC分类号： H04W24/08 , H04L1/0026
摘要： Systems, methods, and other embodiments associated with a quality of service (QoS) aware channel quality indicator (CQI) are described. In one embodiment, an apparatus includes determination logic configured to receive a request for a CQI. A QoS associated with a wireless channel on which to base the CQI is determined. The determination logic is further configured to compute the CQI based, at least in part, on the determined QoS.
摘要翻译：描述了与服务质量（QoS）感知信道质量指示符（CQI）相关联的系统，方法和其他实施例。在一个实施例中，一种装置包括被配置为接收对CQI的请求的确定逻辑。确定与基于CQI的无线信道相关联的QoS。所述确定逻辑还被配置为至少部分地基于所确定的QoS来计算所述CQI。

33. 发明授权

US08902961B1 Forward channel variation detection in a wireless communication system 有权
标题翻译：无线通信系统中的前向信道变化检测
公开(公告)号：US08902961B1
公开(公告)日：2014-12-02
申请号：US13767414
申请日：2013-02-14
申请人： Marvell International Ltd.
发明人： Rohit U. Nabar , Hongyuan Zhang , Jungwon Lee
IPC分类号： H04L1/00 , H04B7/04
CPC分类号： H04B7/0456 , H04B7/0617 , H04B7/0619 , H04L1/0003 , H04L1/0009 , H04L25/0222 , H04L25/0228
摘要： A method in a wireless communication system having a forward channel corresponding to transmissions from a first device to a second device, and a reverse channel corresponding to transmissions from the second device to the first device, includes initiating, at the first device, a first update of a steering matrix. The steering matrix is used to beamform transmissions on the forward channel. The method also includes monitoring, at the first device, a plurality of reverse channel estimates corresponding to the reverse channel, determining, at the first device, a metric indicative of a rate of change in the reverse channel based on the plurality of reverse channel estimates, and initiating, at the first device, a second update of the steering matrix based on a comparison between (i) the metric indicative of the rate of change in the reverse channel and (ii) a threshold.
摘要翻译：一种具有对应于从第一设备到第二设备的传输的正向信道的无线通信系统中的方法以及对应于从第二设备到第一设备的传输的反向信道的方法包括在第一设备处启动第一更新的导向矩阵。导向矩阵用于在正向信道上波束传输。该方法还包括在第一设备处监视对应于反向信道的多个反向信道估计，在第一设备处，基于多个反向信道估计来确定指示反向信道的变化率的度量并且基于（i）指示反向信道中的变化率的度量和（ii）阈值之间的比较，在所述第一设备处发起所述导引矩阵的第二更新。

34. 发明授权

US08873686B1 Successive interference cancellation in multiple-input multiple-output receivers 有权
标题翻译：多输入多输出接收机中的连续干扰消除
公开(公告)号：US08873686B1
公开(公告)日：2014-10-28
申请号：US14226037
申请日：2014-03-26
申请人： Marvell International Ltd.
发明人： Jungwon Lee , Yakun Sun , Jiwoong Choi , Leilei Song , Adina Matache
IPC分类号： H04B7/10 , H04L1/00 , H04B7/04
CPC分类号： H04L1/0048 , H04B7/0413 , H04J11/004
摘要： A system including a first receiver that generates a first set of decoded codewords; and a first canceller that cancels, in response to any decoded codeword of the first set of decoded codewords failing CRC and a first decoded codeword from the first set of decoded codewords passing CRC, interference of a first codeword on a second set of codewords which includes the plurality of codewords and excludes the first codeword. The system further includes a second receiver that generates a third set of decoded codewords by decoding the second set of codewords; and a second canceller that cancels, in response to any decoded codeword of the third set of decoded codewords failing CRC and a second decoded codeword from the third set of decoded codewords passing CRC, interference of a second codeword on a fourth set of codewords.
摘要翻译：一种包括产生第一组解码码字的第一接收机的系统; 以及第一消除器，其响应于未通过CRC的第一组解码码字的任何解码码字和来自经过CRC的来自第一解码码字集合的第一解码码字，第一码字对第二组码字的干扰包括所述多个码字并且排除所述第一码字。该系统还包括第二接收机，其通过对第二组码字进行解码来产生第三组解码码字; 以及第二消除器，其响应于未通过CRC的第三组解码码字的解码码字和来自经过CRC的第三解码码字集合的第二解码码字，在第四组码字上产生第二码字的干扰。

35. 发明授权

US08831148B1 Tracking automatic gain control of orthogonal frequency domain multiplexing systems 有权
标题翻译：跟踪正交频域复用系统的自动增益控制
公开(公告)号：US08831148B1
公开(公告)日：2014-09-09
申请号：US13947752
申请日：2013-07-22
申请人： Marvell International Ltd.
发明人： Jungwon Lee , Qing Zhao , Hui-Ling Lou
IPC分类号： H04L27/08
CPC分类号： H04L27/08 , H03G3/3052 , H03G3/3078 , H04L27/2626
摘要： A system including a variable gain amplifier, an automatic gain control module, and a channel estimation module. The variable gain amplifier is configured to amplify an input signal in accordance with a gain. The input signal includes a plurality of orthogonal frequency domain multiplexing symbols. Each of the plurality of orthogonal frequency domain multiplexing symbols is preceded by a respective cyclic prefix. The automatic gain control module is configured to adjust, based on a signal strength of the input signal, the gain of the variable gain amplifier during the respective cyclic prefix preceding each of the plurality of orthogonal frequency domain multiplexing symbols. The channel estimation module is configured to generate a channel estimate for each of the plurality of orthogonal frequency domain multiplexing symbols, and to update the channel estimate in response to the gain of the variable gain amplifier being adjusted.
摘要翻译：一种包括可变增益放大器，自动增益控制模块和信道估计模块的系统。可变增益放大器被配置为根据增益来放大输入信号。输入信号包括多个正交频域复用符号。多个正交频域复用符号中的每一个前面都有相应的循环前缀。所述自动增益控制模块被配置为基于所述输入信号的信号强度，在所述多个正交频域复用符号中的每一个之前的相应循环前缀期间调整所述可变增益放大器的增益。信道估计模块被配置为针对多个正交频域复用符号中的每一个生成信道估计，并且响应于被调整的可变增益放大器的增益来更新信道估计。

36. 发明授权

US08712333B1 Selecting modulation and coding scheme in the presence of interference 有权
标题翻译：在存在干扰的情况下选择调制和编码方案
公开(公告)号：US08712333B1
公开(公告)日：2014-04-29
申请号：US13742081
申请日：2013-01-15
申请人： Marvell International Ltd.
发明人： Jungwon Lee
IPC分类号： H04B1/00
CPC分类号： H04L27/0012 , H04L1/0003 , H04L1/0009 , H04L25/08 , H04L27/3405
摘要： A system including a sensing module to sense an interference signal in a wireless channel, determine whether the interference signal is noise or a modulated signal transmitted by a device, and attempt to determine a modulation scheme of the modulated signal. A capacity determination module determines capacities of the wireless channel to transmit data using a plurality of modulation schemes. The plurality of modulation schemes includes (i) the modulation scheme used by the device to modulate the modulated signal if the sensing module can determine the modulation scheme of the modulated signal and (ii) one or more modulation schemes that can be used by the device to modulate the modulated signal if the sensing module cannot determine the modulation scheme of the modulated signal. A selection module selects, based on the capacities of the wireless channel, one of the plurality of modulation schemes to transmit data over the wireless channel.
摘要翻译：一种包括用于感测无线信道中的干扰信号的感测模块的系统，确定干扰信号是否是由设备发送的噪声或调制信号，并尝试确定调制信号的调制方案。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。多个调制方案包括（i）如果感测模块可以确定调制信号的调制方案，则设备使用的调制方案来调制调制信号，以及（ii）设备可以使用的一个或多个调制方案如果感测模块不能确定调制信号的调制方案，则调制调制信号。选择模块基于无线信道的容量来选择多个调制方案之一通过无线信道发送数据。

37. 发明授权

US09225477B1 Significance of retransmission used in subsequent decoding 有权
标题翻译：在后续解码中使用重传的意义
公开(公告)号：US09225477B1
公开(公告)日：2015-12-29
申请号：US14072613
申请日：2013-11-05
申请人： Marvell International Ltd.
发明人： Jungwon Lee , Jiwoong Choi
IPC分类号： H04L1/18 , G06F11/10
CPC分类号： H04L1/1845 , G06F11/1004 , H04L1/1816 , H04L1/1819
摘要： Systems and techniques relating to wireless communications are described. A described technique includes receiving, at a wireless communication device, signals representing wireless data transmissions that are based on a message, the received signals including one or more previous signals and a current signal, wherein the current signal was transmitted in response to the one or more previous signals failing to successfully resolve the message; combining the received signals based on unequal weights to produce a combined signal, the weights include a first weight value assigned to the one or more previous signals and a second, greater weight value assigned to the current signal, the second weight value being based on a noise variance, the first weight value being based on a modified version of the noise variance, the modified version reflecting one or more decoding failures; and decoding the combined signal to resolve the message.
摘要翻译：描述与无线通信相关的系统和技术。所描述的技术包括在无线通信设备处接收表示基于消息的无线数据传输的信号，所接收的信号包括一个或多个先前信号和当前信号，其中当前信号响应于一个或多个更多以前的信号未能成功解决消息; 基于不等权重组合所接收的信号以产生组合信号，所述权重包括分配给所述一个或多个先前信号的第一加权值和分配给所述当前信号的第二较大加权值，所述第二权重值基于噪声方差，所述第一权重值基于所述噪声方差的修改版本，所述修改版本反映一个或多个解码失败; 并解码组合信号以解决消息。

38. 发明授权

US09215121B1 Method and apparatus for implementing transmit diversity in OFDM systems 有权
标题翻译：在OFDM系统中实现发射分集的方法和装置
公开(公告)号：US09215121B1
公开(公告)日：2015-12-15
申请号：US14309657
申请日：2014-06-19
申请人： MARVELL INTERNATIONAL LTD.
发明人： Jungwon Lee , Jihwan P. Choi , Hui-Ling Lou , Rohit U. Nabar , Yakun Sun
IPC分类号： H04L27/00 , H04L27/26
CPC分类号： H04L27/2627 , H04B7/0413 , H04B7/0669 , H04B7/0671 , H04L1/0625 , H04L5/0023 , H04L5/0087 , H04L25/0204 , H04L25/03159 , H04L2025/03414 , H04L2025/03426
摘要： A plurality of diagonal matrices Ci is determined, where the plurality of diagonal matrices Ci is for modifying a plurality of transmit signals to be transmitted via a plurality of transmit antennas, each diagonal matrix Ci for modifying an i-th block of sub-carriers, adjacent in frequency, in the plurality of transmit signals. The plurality of diagonal matrices Ci is used to modify the plurality of transmit signals to implement transmit diversity.
摘要翻译：确定多个对角矩阵Ci，其中多个对角矩阵Ci用于修改要经由多个发射天线发射的多个发射信号，用于修改第i个子载波块的每个对角矩阵Ci，频率相邻的多个发送信号。多个对角矩阵Ci用于修改多个发射信号以实现发射分集。

39. 发明授权

US09191044B1 Methods and apparatus for multiple input multiple output (MIMO) successive interference cancellation (SIC) 有权
标题翻译：用于多输入多输出（MIMO）连续干扰消除（SIC）的方法和装置
公开(公告)号：US09191044B1
公开(公告)日：2015-11-17
申请号：US14142291
申请日：2013-12-27
申请人： Marvell International Ltd.
发明人： Yakun Sun , Jungwon Lee
IPC分类号： H04B1/10 , H04B7/04
CPC分类号： H04B7/0456 , H04B1/10 , H04B7/0413 , H04J11/004 , H04L1/0048 , H04L25/03305
摘要： Systems and methods are provided for determining a successive interference cancellation (SIC) decoding ordering in a multiple input multiple output transmission (MIMO) system. Multiple decoding orderings for received codewords are identified. A performance objective, such as total throughput or total probability of decoding, is computed for each one of the orderings based on the position of the codewords in the ordering. A globally optimal ordering is found that maximizes the performance objective over the multiple decoding orderings.
摘要翻译：提供了用于确定多输入多输出传输（MIMO）系统中的连续干扰消除（SIC）解码排序的系统和方法。识别接收码字的多个解码顺序。基于排序中的码字的位置，针对每个排序计算性能目标，例如总吞吐量或总解码概率。发现全局最优排序，使多个解码顺序的性能目标最大化。

40. 发明授权

US09007950B1 Estimation of direct channel and interference channel 有权
标题翻译：直接通道和干扰通道的估计
公开(公告)号：US09007950B1
公开(公告)日：2015-04-14
申请号：US13951003
申请日：2013-07-25
申请人： Marvell International Ltd.
发明人： Jungwon Lee
IPC分类号： G06F15/16 , H04W24/10
CPC分类号： H04J11/005 , H04B7/024 , H04B7/0404 , H04B7/0854 , H04L5/0032 , H04L5/0048 , H04W24/08 , H04W24/10
摘要： A mobile station including an input configured to receive input signals via a channel, a noise measuring module, and a control module. The noise measuring module is configured to measure noise based on the input signals, and generate information in response to measuring the noise based on the input signals. The control module is configured to determine, depending on whether the noise measuring module is able to (i) measure the noise based on the input signals and (ii) generate the information in response to measuring the noise based on the input signals, whether to use a first procedure to estimate a gain of the channel or a second procedure to estimate the gain of the channel, where the first procedure to estimate the gain of the channel is different than the second procedure to estimate the gain of the channel.
摘要翻译：一种移动站，包括被配置为经由信道接收输入信号的输入，噪声测量模块和控制模块。噪声测量模块被配置为基于输入信号测量噪声，并且响应于基于输入信号测量噪声而生成信息。控制模块被配置为根据噪声测量模块能够（i）基于输入信号测量噪声和（ii）响应于基于输入信号测量噪声生成信息，来确定是否使用第一过程来估计信道的增益或估计信道增益的第二过程，其中估计信道增益的第一过程不同于估计信道增益的第二过程。

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