公开(公告)号：US09608678B1

公开(公告)日：2017-03-28

申请号：US14571715

申请日：2014-12-16

Applicant: Marvell International LTD.

Inventor： Yakun Sun ,  Mingguang Xu ,  Hui-Ling Lou ,  Hongyuan Zhang ,  Yan Zhang ,  Liwen Chu ,  Jinjing Jiang

IPC: H04B15/00 ,  H04B1/10 ,  H04W24/02

CPC classification number: H04B1/10 ,  H04B1/406 ,  H04B17/24 ,  H04B17/318 ,  H04W24/02 ,  H04W72/1215

Abstract: A wireless device including a first receiver and a second receiver. The first receiver is configured to receive a first signal transmitted on a first network using a first communication standard, and generate, in response to a signal strength of the first signal being greater than or equal to a predetermined threshold, first information about the first signal based on a first portion of the first signal. The second receiver is configured to receive a second signal transmitted on a second network using a second communication standard, and suppress interference from the first signal based on the first information about the first signal. The first communication standard is different from the second communication standard. The first receiver and the second receiver are co-located in the wireless device.

公开(公告)号：US09509540B1

公开(公告)日：2016-11-29

申请号：US15043102

申请日：2016-02-12

Applicant: Marvell International Ltd.

Inventor： Hongyuan Zhang ,  Mingguang Xu ,  Yakun Sun

IPC: H04L27/26

CPC classification number: H04W52/0212 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2611 ,  H04L27/2613 ,  H04W52/16 ,  H04W52/325 ,  H04W84/12

Abstract: Accordingly, systems and methods for managing power when the number of training and data tones are increased in a wireless communications system are provided. An L-SIG field is generated that includes a set of data and pilot tones, wherein the pilot tones are inserted between the data tones in the set of data and pilot tones. A plurality of training tones is added to the L-SIG field before and after the set of data and pilot tones. A symbol is generated that includes the L-SIG field, an L-LTF field, and a data field, wherein the training tones of the L-SIG field provide channel estimates for the data field. Power of the L-LTF field is managed relative to power of the L-SIG field in the generated symbol in a time domain.

Abstract translation: 因此，提供了在无线通信系统中增加训练和数据音调的数量时管理电力的系统和方法。 生成包括一组数据和导频音调的L-SIG字段，其中导频音被插入数据集和导频音中的数据音调之间。 在数据和导频音的组之前和之后，将多个训练音增加到L-SIG字段。 生成包括L-SIG字段，L-LTF字段和数据字段的符号，其中L-SIG字段的训练音调提供数据字段的信道估计。 相对于时域中生成的符号中的L-SIG字段的功率来管理L-LTF字段的功率。

公开(公告)号：US09503245B1

公开(公告)日：2016-11-22

申请号：US14136860

申请日：2013-12-20

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Jihwan P. Choi ,  Hui-Ling Lou ,  Leilei Song ,  Yakun Sun ,  Qing Zhao

IPC: H04J3/00 ,  H04L5/00

CPC classification number: H04L5/0062 ,  H04L5/0028

Abstract: Various methods and apparatus are disclosed for mitigating interference between communications between different radio access technologies in a communication device. Methods and apparatus include communicating between a first communication device and a second communication device according to a first communication protocol, and communicating between the first communication device and a third communication device according to a second communication protocol. The methods and apparatus further include determining a first time interval associated with when data is to be transmitted between the first communication device and the second communication device according to the first communications protocol. The methods and apparatus also include sending to the third communication device, an indication of a second time interval to prompt the third communication device not transmit to the first communication device during the second time interval, wherein the second time interval corresponds to the first time interval.

Abstract translation: 公开了用于减轻通信设备中的不同无线电接入技术之间的通信之间的干扰的各种方法和装置。 方法和装置包括根据第一通信协议在第一通信设备和第二通信设备之间进行通信，以及根据第二通信协议在第一通信设备和第三通信设备之间进行通信。 所述方法和装置还包括确定与根据第一通信协议在第一通信设备和第二通信设备之间传输数据相关联的第一时间间隔。 所述方法和装置还包括向第三通信设备发送第二时间间隔的指示，以在第二时间间隔期间促使第三通信设备不发送到第一通信设备，其中第二时间间隔对应于第一时间间隔 。

公开(公告)号：US09407481B1

公开(公告)日：2016-08-02

申请号：US14070712

申请日：2013-11-04

Applicant: Marvell International Ltd.

Inventor： Vladan Petrovic ,  Yakun Sun ,  Jungwon Lee

IPC: H04L27/06

CPC classification number: H04L1/0052 ,  H04B7/0891 ,  H04L1/0046 ,  H04L1/0061 ,  H04L1/0067 ,  H04L1/0075 ,  H04L1/08 ,  H04L5/0053 ,  H04L5/0091 ,  H04L25/03891 ,  H04L27/06

Abstract: Systems and methods for performing efficient blind decoding. A first plurality of decision metrics corresponding to a first repetition of periodic decoding information is stored. The first plurality of decision metrics is grouped into sequential portions. A plurality of combined versions of the sequential portions is stored into combining buffers arranged in sequence. Each combined version is associated with a different sequence of timing information. A first of the plurality of combined versions stored in a first of the combining buffers is combined with a second version of a second plurality of decision metrics that corresponds to a second repetition of the periodic decoding information. The second version is associated with timing information adjacent in the timing information sequence to the timing information associated with the first combined version. The data is decoded based on information in the combining buffers.

公开(公告)号：US09197461B1

公开(公告)日：2015-11-24

申请号：US14207117

申请日：2014-03-12

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Yakun Sun ,  Leilei Song ,  Hui-Ling Lou ,  Mingguang Xu

IPC: H04B7/02 ,  H04L25/03 ,  H04B7/04 ,  H04L1/06 ,  H04L1/00

CPC classification number: H04B7/02 ,  H04B7/04 ,  H04B7/0413 ,  H04B7/0854 ,  H04L1/00 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/06 ,  H04L1/0618 ,  H04L25/03 ,  H04L25/03038 ,  H04L25/03057 ,  H04L25/03891

Abstract: In a method for performing successive interference cancellation (SIC) in a multiple input, multiple output (MIMO) communication channel, a plurality of received signals are processed to decode a first codeword. An equalizer is generated corresponding to a second codeword and applied to the plurality of received signals to generate an equalized signal. An interference signal is also generated using the first codeword and then subtracted from the equalized signal. The equalized signal is processed to decode the second codeword.

Abstract translation: 在用于在多输入多输出（MIMO）通信信道中执行连续干扰消除（SIC）的方法中，处理多个接收信号以对第一码字进行解码。 产生对应于第二码字的均衡器并将其应用于多个接收信号以产生均衡的信号。 还使用第一码字产生干扰信号，然后从均衡信号中减去干扰信号。 处理均衡信号以对第二码字进行解码。

公开(公告)号：US09148207B1

公开(公告)日：2015-09-29

申请号：US14157485

申请日：2014-01-16

Applicant: Marvell International Ltd.

Inventor： Yakun Sun ,  Adina Matache ,  Jungwon Lee

IPC: H04W4/00 ,  H04B7/04

CPC classification number: H04B7/0456 ,  H04B7/0413 ,  H04B7/0632 ,  H04B7/066 ,  H04B7/0671 ,  H04B7/0673 ,  H04B7/0678 ,  H04B7/068 ,  H04B7/0691 ,  H04B17/336 ,  H04L1/0026 ,  H04L1/0029 ,  H04L1/0036 ,  H04L1/06 ,  H04L5/0023

Abstract: Systems and methods are provided for determining a channel quality indicator (CQI) in a transmission system associated with a diversity transmission scheme. A plurality of independent diversity branches are identified in the diversity transmission scheme. Each one of the independent diversity branches may correspond to a different portion of the effective channel and may include any suitable combination of frequency, time, and/or spatial components of the effective channel or of any wired or wireless paths or combinations of the same. An effective Signal-to-Noise Ratio (SNR) value is computed for each one of the identified independent diversity branches. The computed effective SNR values are combined for the identified independent diversity branches to generate a CQI value.

Abstract translation: 提供了用于确定与分集传输方案相关联的传输系统中的信道质量指示符（CQI）的系统和方法。 在分集传输方案中识别出多个独立分集分支。 独立分集分支中的每一个可以对应于有效信道的不同部分，并且可以包括有效信道或任何有线或无线路径或其组合的频率，时间和/或空间分量的任何合适的组合。 为所识别的独立分集分支中的每一个计算有效的信噪比（SNR）值。 为所识别的独立分集分支组合计算出的有效SNR值以产生CQI值。

公开(公告)号：US09106456B1

公开(公告)日：2015-08-11

申请号：US14243247

申请日：2014-04-02

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Yakun Sun ,  Jiwoong Choi ,  Hui-Ling Lou ,  Raphael Cendrillon

IPC: H04L27/38 ,  H04L25/02 ,  H04L27/26 ,  H04L25/03

CPC classification number: H04L25/0206 ,  H04L25/0204 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/0228 ,  H04L27/2647 ,  H04L27/2649 ,  H04L27/38 ,  H04L2025/03535

Abstract: Systems, methods, and other embodiments associated with adaptive low-complexity channel estimation are illustrated. In one embodiment an integrated circuit includes a controller configured to control a switch to select between a plurality of processing paths that each perform channel estimation using a different order of operations to process an orthogonal frequency-division multiplexed (OFDM) signal.

Abstract translation: 示出了与自适应低复杂度信道估计相关联的系统，方法和其他实施例。 在一个实施例中，集成电路包括控制器，其被配置为控制交换机在多个处理路径之间进行选择，每个处理路径使用不同的操作顺序执行信道估计以处理正交频分复用（OFDM）信号。

公开(公告)号：US09094080B1

公开(公告)日：2015-07-28

申请号：US14133282

申请日：2013-12-18

Applicant: Marvell International Ltd.

Inventor： Mingguang Xu ,  Yakun Sun ,  Christian R. Berger ,  Hui-Ling Lou

IPC: H04L25/02 ,  H04B1/10 ,  H04B17/364 ,  H04B17/318

CPC classification number: H04B17/318 ,  H04B17/364 ,  H04L25/0212 ,  H04L25/0216 ,  H04L25/0228

Abstract: Systems and methods are provided for processing a signal using simplified channel statistics. In an example implementation, a channel profile for a multipath channel is estimated by detecting, within a given range, a number of channel taps associated with a channel impulse response, and assigning each of those channel taps a uniform amplitude value corresponding to a constant signal strength. A signal may be received through the multipath channel and filtered based on the estimated channel profile.

Abstract translation: 提供了使用简化的信道统计来处理信号的系统和方法。 在示例实现中，通过在给定范围内检测与信道脉冲响应相关联的信道抽头的数量来估计用于多径信道的信道简档，并且将这些信道抽头中的每一个分配给对应于恒定信号的均匀幅度值 强度。 可以通过多路径信道接收信号并且基于估计的信道简档进行滤波。

公开(公告)号：US09048917B1

公开(公告)日：2015-06-02

申请号：US13959498

申请日：2013-08-05

Applicant: Marvell International Ltd.

Inventor： Krishna Srikanth Gomadam ,  Yakun Sun ,  Raphael Cendrillon ,  Christian R. Berger ,  Hui-Ling Lou

IPC: H04B1/10 ,  H04L25/02 ,  H04L5/00 ,  H04L25/03 ,  H04L1/02 ,  H04L1/06 ,  H04B7/02 ,  H04B7/04 ,  H04W52/24

CPC classification number: H04B17/345 ,  H04B1/1027 ,  H04B7/024 ,  H04B7/04 ,  H04B7/0413 ,  H04L1/02 ,  H04L1/0631 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0206 ,  H04L25/021 ,  H04L25/024 ,  H04L25/0242 ,  H04L25/0248 ,  H04L25/0328 ,  H04L25/03292 ,  H04L25/03891 ,  H04L25/03993 ,  H04W52/24

Abstract: The present disclosure includes systems and techniques relating to processing received spatially diverse transmissions. In some implementations, an apparatus includes: circuitry configured to receive signals from separate communication inputs; circuitry configured to filter the signals to reduce noise, interference, or both; circuitry configured to estimate covariance of the separate communication inputs, including estimating a correlation between the separate communication inputs; and circuitry configured to apply the covariance estimation to the filtering circuitry to effect noise whitening and to force an underestimation of the correlation between the separate communication inputs as applied.

Abstract translation: 本公开包括与处理接收到的空间不同的传输有关的系统和技术。 在一些实施方式中，一种装置包括：被配置为从单独的通信输入接收信号的电路; 被配置为过滤信号以减少噪声，干扰或两者的电路; 被配置为估计所述单独通信输入的协方差的电路，包括估计所述单独的通信输入之间的相关性; 以及电路，被配置为将所述协方差估计应用于所述滤波电路以实现噪声白化，并且强制低估所应用的分离的通信输入之间的相关性。

公开(公告)号：US09048893B1

公开(公告)日：2015-06-02

申请号：US14028088

申请日：2013-09-16

Applicant: Marvell International Ltd.

Inventor： Yakun Sun ,  Mingguang Xu ,  Jie Huang

IPC: H04B7/04 ,  H04L25/03 ,  H04L1/00

CPC classification number: H04B7/0417 ,  H04B7/0413 ,  H04B7/0626 ,  H04L1/0054 ,  H04L25/03267 ,  H04L25/03292 ,  H04L25/03968

Abstract: In various embodiments, the present disclosure provides transmitters, receivers, and methods of determining channel state information for a maximum likelihood (ML) multiple input multiple output (MIMO) receiver, as well as transmitting and demodulating signals based on the determined channel state information. A ML MIMO receiver receives a first MIMO signal from a MIMO transmitter. Channel characteristics of the first MIMO signal are determined based on decision feedback equalization (DFE) processing. The DFE-determined channel characteristics, or information derived from the DFE-determined channel characteristics, are reported to the MIMO transmitter and the MIMO ML receiver decodes a second MIMO signal based on ML processing. The second MIMO signal is modulated and encoded by the MIMO transmitter according to a modulation and coding scheme in accordance with (1) the DFE-determined channel characteristics or (2) the information derived from the DFE-determined channel characteristics.

Abstract translation: 在各种实施例中，本公开提供了确定用于最大似然（ML）多输入多输出（MIMO）接收机的信道状态信息的发射机，接收机和方法，以及基于所确定的信道状态信息来发射和解调信号。 ML MIMO接收机从MIMO发射机接收第一MIMO信号。 基于判决反馈均衡（DFE）处理确定第一MIMO信号的信道特性。 将DFE确定的信道特性或从DFE确定的信道特性导出的信息报告给MIMO发射机，并且MIMO ML接收机基于ML处理来解码第二MIMO信号。 根据（1）DFE确定的信道特性的调制和编码方案，由MIMO发射机调制和编码第二MIMO信号，或（2）从DFE确定的信道特性导出的信息。