公开(公告)号：US09337987B1

公开(公告)日：2016-05-10

申请号：US14109246

申请日：2013-12-17

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Jihwan P. Choi ,  Mingguang Xu ,  Hui-Ling Lou

IPC: H04B15/00 ,  H04W28/04 ,  H04W72/08 ,  H04W72/12 ,  H04L5/00

CPC classification number: H04W28/04 ,  H04W72/082 ,  H04W72/1215 ,  H04W88/06

Abstract: A method includes determining a first measure of a benefit of disallowing transmission during a time period within a time frame. The benefit of disallowing transmission includes an immediate benefit of disallowing transmission during the time period, and a future benefit of having, for use in a subsequent portion of the time frame, a decremented number of opportunities to disallow transmission. The method also includes determining a second measure of a benefit of not disallowing transmission during the time period. The benefit of not disallowing transmission includes an immediate benefit of not disallowing transmission during the time period, and a future benefit of having, for use in the subsequent portion of the time frame, a non-decremented number of opportunities to disallow transmission. The method also includes determining whether to disallow transmission during the time period at least in part by comparing the first measure to the second measure.

Abstract translation: 一种方法包括在时间范围内的一段时间内确定不允许传输的益处的第一测量。 不允许传输的好处包括在该时间段期间不允许发送的直接利益，以及在时间框架的后续部分中使用减少传输数量的机会的未来好处。 该方法还包括确定在该时间段内不允许传输的益处的第二测量。 不允许传输的好处包括在该时间段内不允许发送的直接利益，以及在后续部分时间段内使用不减少传输数量的机会的未来好处。 该方法还包括至少部分地通过将第一测量与第二测量进行比较来确定在该时间段期间是否禁止传输。

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

IPC: H04L1/08 ,  G06F11/10 ,  H04B7/04

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.

公开(公告)号：US09148890B1

公开(公告)日：2015-09-29

申请号：US14570104

申请日：2014-12-15

Applicant: Marvell International Ltd.

Inventor： Jihwan P. Choi ,  Ying Cai ,  Yakun Sun ,  Hui-Ling Lou

IPC: H04W72/12 ,  H04W72/08 ,  H04W72/04 ,  H04W88/06

CPC classification number: H04W72/1226 ,  H04L5/0091 ,  H04W72/048 ,  H04W72/082 ,  H04W72/1215 ,  H04W88/06

Abstract: A device including a first transceiver and a second transceiver. The first transceiver is configured to selectively transmit and receive first signals in a first frequency band according to a schedule. The first signals include at least cellular signals. The second transceiver is configured to selectively transmit and receive second signals in a second frequency band different from the first frequency band. The second signals include at least WiFi signals. An arbiter is configured to generate status reports indicating statuses of channels in the first frequency band and/or the second frequency band, receive the schedule as generated based on the statuses, and selectively modify the status reports based on an expected transmission and/or reception of the first signals by the first transceiver, and/or an expected transmission and/or reception of the second signals by the second transceiver.

Abstract translation: 一种包括第一收发器和第二收发器的装置。 第一收发器被配置为根据时间表选择性地发送和接收第一频带中的第一信号。 第一信号至少包括蜂窝信号。 第二收发器被配置为在不同于第一频带的第二频带中选择性地发送和接收第二信号。 第二信号至少包括WiFi信号。 仲裁器被配置为产生指示第一频带和/或第二频带中的信道状态的状态报告，接收基于状态产生的调度，并且基于预期的发送和/或接收选择性地修改状态报告 由第一收发器产生的第一信号，和/或由第二收发器预期的第二信号的发送和/或接收。

公开(公告)号：US09100074B1

公开(公告)日：2015-08-04

申请号：US14171773

申请日：2014-02-03

Applicant: Marvell International Ltd.

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

IPC: H04B7/00 ,  H04B7/06

CPC classification number: H04B7/0617 ,  H04B7/0626 ,  H04B7/0634

Abstract: A first communication device receives a plurality of training signals associated with a transmit beamforming training portion of a current iteration of a beamforming procedure between the first communication device and a second communication device. A receive antenna weight vector (AWV) is applied to an antenna array as each of the plurality of training signals is received. A channel estimate is determined based on reception of the plurality of training signals, and feedback is determined based on the channel estimate. The feedback is transmitted to the second communication device as part of the current iteration of the beamforming procedure.

Abstract translation: 第一通信设备接收与第一通信设备和第二通信设备之间的波束形成过程的当前迭代的发射波束形成训练部分相关联的多个训练信号。 接收天线权重向量（AWV）被施加到天线阵列，因为接收到多个训练信号中的每一个。 基于多个训练信号的接收来确定信道估计，并且基于信道估计来确定反馈。 作为波束形成过程的当前迭代的一部分，反馈被传送到第二通信设备。

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

IPC: H04L27/06 ,  H04L1/06 ,  H04B7/04 ,  H04L1/00

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。

公开(公告)号：US08989297B1

公开(公告)日：2015-03-24

申请号：US14486609

申请日：2014-09-15

Applicant: Marvell International Ltd.

Inventor： Hui-Ling Lou ,  Bhaskar Nallapureddy ,  Atul Salhotra

IPC: H04B7/02 ,  H04B7/06 ,  H04L1/00

CPC classification number: H04L5/0023 ,  H04B1/38 ,  H04B7/068 ,  H04L1/0071 ,  H04L5/0044 ,  H04L27/2637 ,  H04W72/04

Abstract: Systems and techniques relating to processing multiple data streams include, according to an aspect, a method including interleaving data streams to be transmitted over a wireless channel, wherein the interleaving comprises performing a first permutation and a second permutation, and applying data rotations to the data streams in connection with the interleaving, wherein each of the data rotations has a constant rotation value for its corresponding stream index regardless of how many data streams are currently being transmitted, a second rotation value used for a second stream is larger than a first rotation value used for a first stream, a third rotation value used for a third stream is greater than the first rotation value but less than the second rotation value, and a fourth rotation value used for a fourth stream is greater than the second rotation value, and wherein the data rotations are applied after the second permutation.

Abstract translation: 与处理多个数据流有关的系统和技术包括：根据一个方面的方法，包括交织要通过无线信道发送的数据流的方法，其中所述交织包括执行第一置换和第二置换，以及将数据旋转应用于所述数据 与交织相关联的流，其中每个数据旋转对于其对应的流索引具有恒定的旋转值，而不管当前正在发送多少数据流，用于第二流的第二旋转值大于第一旋转值 用于第一流，用于第三流的第三旋转值大于第一旋转值但小于第二旋转值，并且用于第四流的第四旋转值大于第二旋转值，并且其中 在第二次排列之后应用数据旋转。

公开(公告)号：US08913582B1

公开(公告)日：2014-12-16

申请号：US14104168

申请日：2013-12-12

Applicant: Marvell International Ltd.

Inventor： Hongyuan Zhang ,  Hui-Ling Lou ,  Rohit U. Nabar ,  Yong Liu

IPC: H04W4/00 ,  H03C7/02 ,  H04B7/02 ,  H04L1/00 ,  H04W24/02 ,  H04B7/06

CPC classification number: H04L1/0003 ,  H04B7/0619 ,  H04W24/02 ,  H04W52/262

Abstract: A first wireless device including a receiver and a transmitter. The receiver includes a channel estimation module configured to receive, from a second wireless device over a communication channel, a training packet and estimate a quality of the communication channel based on the training packet, and a modulation and coding scheme (MCS) determination module configured to determine an MCS based on one or more of the training packet and the estimated quality of the communication channel. The transmitter is configured to transmit, to the second wireless device over the communication channel, an indication of the MCS determined by the MCS determination module.

Abstract translation: 包括接收机和发射机的第一无线设备。 所述接收机包括：信道估计模块，被配置为通过通信信道从第二无线设备接收训练分组，并且基于所述训练分组来估计所述通信信道的质量;以及配置的调制和编码方案（MCS）确定模块 以基于训练分组中的一个或多个以及通信信道的估计质量来确定MCS。 发送器被配置为通过通信信道向第二无线设备发送由MCS确定模块确定的MCS的指示。

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 。

公开(公告)号：US08774725B1

公开(公告)日：2014-07-08

申请号：US13724847

申请日：2012-12-21

Applicant: Marvell International Ltd.

Inventor： Rohit U. Nabar ,  Hui-Ling Lou

IPC: H04B1/00

CPC classification number: H04B7/0417 ,  H04B17/14

Abstract: A transmitter beamforming technique for use in a MIMO wireless communication system determines a calibration factor and then applies the calibration factor to a transmit beamforming steering matrix developed using implicit beamforming. The beamforming technique first determines descriptions of both the forward and reverse channels, determines an estimate of the forward channel from the description of the reverse channel, determines right singular matrixes which model the forward channel and the estimated forward channel and then develops a calibration factor from the determined right singular matrixes. The beamforming technique then applies the determined calibration factor to a steering matrix which is calculated using an implicit beamforming technique. The use of this beamforming technique provides superior beamforming results when using implicit beamforming without having to take the necessary steps to determine a description of the actual forward channel each time a new steering matrix is to be calculated.

Abstract translation: 用于MIMO无线通信系统的发射机波束形成技术确定校准因子，然后将校准因子应用于使用隐式波束形成开发的发射波束形成导引矩阵。 波束成形技术首先确定正向和反向信道两者的描述，从反向信道的描述确定前向信道的估计，确定对正向信道和估计的前向信道建模的右侧奇异矩阵，然后从 确定的右奇异矩阵。 波束形成技术然后将所确定的校准因子应用于使用隐式波束形成技术计算的导引矩阵。 当使用隐式波束成形时，使用这种波束成形技术提供优异的波束成形结果，而不必采取必要的步骤来确定每当计算新的导向矩阵时对实际正向信道的描述。

公开(公告)号：US08718204B1

公开(公告)日：2014-05-06

申请号：US13888214

申请日：2013-05-06

Applicant: Marvell International Ltd.

Inventor： Jungwon Lee ,  Jiwoong P. Choi ,  Hui-Ling Lou

IPC: H03D1/00 ,  H04L27/06

CPC classification number: H04L25/03203 ,  H04L25/03331

Abstract: One of a plurality of candidate data symbols is selected. All possible values of the selected one candidate data symbol are grouped into two or more bit groups. A bit group is selected from the two or more bit groups. A local optimum candidate value from values in the selected bit group is determined for the selected one candidate data symbol for a given set of values corresponding to all of the plurality of candidate data symbols but the selected one candidate data symbol, the local optimum candidate value minimizing a distance value corresponding to a distance between the received data symbol vector and a channel matrix multiplied with the candidate vector, without calculating the distance value. A likelihood value is calculated for a bit in the selected one candidate data symbol based at least in part on the determined local optimum candidate value.

Abstract translation: 选择多个候选数据符号中的一个。 所选择的一个候选数据符号的所有可能值被分组为两个或更多位组。 从两个或多个位组中选择一个位组。 对于对应于所有多个候选数据符号但所选择的一个候选数据符号的给定值的集合，为所选择的一个候选数据符号确定所选位组中的值的局部最佳候选值， 最小化与所接收的数据符号向量和与候选向量相乘的信道矩阵之间的距离相对应的距离值，而不计算距离值。 至少部分地基于所确定的局部最佳候选值来计算所选择的一个候选数据符号中的比特的似然值。