公开(公告)号：US20150372695A1

公开(公告)日：2015-12-24

申请号：US14766740

申请日：2013-03-14

申请人： Jian LI ,  Changlong XU ,  Yisheng XUE ,  Jilei HOU ,  Yin HUANG ,  QUALCOMM INCORPORATED

发明人： Jian Li ,  Changlong Xu ,  Yisheng Xue ,  Jilei Hou ,  Yin Huang

IPC分类号： H03M13/11 ,  H04L1/00

CPC分类号： H03M13/1131 ,  H04L1/0045 ,  H04L1/005 ,  H04L1/0057

摘要： A method of error correction using low density parity check (LDPC) codes is disclosed. A communications device receives a codeword and detects one or more bit errors in the received codeword using an LDPC code. The device then generates a corrected codeword based, at least in part, on a set of unsatisfied check nodes of the LDPC code. The device may determine that the one or more bit errors are associated with an absorption set of the LDPC code. The device may also determine a plurality of candidate codewords based on the set of unsatisfied check node and select the corrected codeword from the plurality of candidate codewords. Each of the plurality of candidate codewords may represent a valid codeword associated with the LDPC code.

摘要翻译： 公开了一种使用低密度奇偶校验（LDPC）码的纠错方法。 通信设备接收码字，并使用LDPC码检测接收到的码字中的一个或多个比特错误。 然后，该设备至少部分地基于LDPC码的一组不满足的校验节点来生成校正码字。 设备可以确定一个或多个比特错误与LDPC码的吸收集相关联。 该设备还可以基于该不满足的校验节点集合来确定多个候选码字，并从多个候选码字中选择校正后的码字。 多个候选码字中的每一个可以表示与LDPC码相关联的有效码字。

公开(公告)号：US20150326382A1

公开(公告)日：2015-11-12

申请号：US14763798

申请日：2013-01-28

申请人： Jian LI ,  Yisheng XUE ,  Michael M. FAN ,  Jilei HOU ,  Yin Huang ,  Fuyun Ling ,  QUALCOMM INCORPORATED

发明人： Jian Li ,  Yin Huang ,  Yisheng Xue ,  Michael M. Fan ,  Fuyun Ling ,  Jilei Hou

IPC分类号： H04L7/00 ,  H04L25/03

CPC分类号： H04L7/0004 ,  H04L25/03 ,  H04L25/0305 ,  H04L25/0307 ,  H04L2025/03656

摘要： A method of initializing a receiver is performed during an initialization mode. Timing offset values for a timing recovery circuit are repeatedly selected. For each selected timing offset value, timing recovery is performed using the timing offset value and groups of weights for a decision feedback equalizer are repeatedly selected. Each selected group of weights is used to perform blind decision feedback equalization. For each selected group of weights, a metric indicating data reception quality is computed. A timing offset value and a group of weights are chosen based on the computed metrics.

摘要翻译： 在初始化模式期间执行初始化接收机的方法。 定时恢复电路的定时偏移值被重复选择。 对于每个选择的定时偏移值，使用定时偏移值执行定时恢复，并且重复地选择用于判决反馈均衡器的权重组。 每个选择的权重组用于执行盲判决反馈均衡。 对于每个选择的权重组，计算指示数据接收质量的度量。 基于所计算的度量来选择定时偏移值和权重组。

公开(公告)号：US20150372803A1

公开(公告)日：2015-12-24

申请号：US14768302

申请日：2013-02-21

申请人： Hai JIANG ,  Yin HUANG ,  Changlong XU ,  Jian LI ,  Yisheng XUE ,  QUALCOMM INCORPORATED

发明人： Hai Jiang ,  Yin Huang ,  Changlong Xu ,  Jian Li ,  Yisheng Xue

IPC分类号： H04L7/00 ,  H04L7/04

CPC分类号： H04L7/0037 ,  H04L7/0062 ,  H04L7/043 ,  H04L7/10

摘要： A method of data-aided timing recovery for Ethernet systems is disclosed. A first device negotiates a pseudorandom number sequence with a second device and receives a data signal from the second device. The first device samples the received data signal to recover a first training sequence. The first device also generates a second training sequence based on the pseudorandom number sequence. The second training sequence is then synchronized with the first training sequence. The synchronized second training sequence is used to align a receive clock signal of the first device with the data signal received from the second device.

摘要翻译： 公开了一种用于以太网系统的数据辅助定时恢复的方法。 第一设备与第二设备协商伪随机数序列，并从第二设备接收数据信号。 第一设备对接收的数据信号进行采样以恢复第一训练序列。 第一设备还基于伪随机数序列生成第二训练序列。 然后将第二训练序列与第一训练序列同步。 同步的第二训练序列用于将第一设备的接收时钟信号与从第二设备接收的数据信号对准。

公开(公告)号：US20160248675A1

公开(公告)日：2016-08-25

申请号：US15026571

申请日：2013-11-13

申请人： Ruiming ZHENG ,  Yisheng XUE ,  QUALCOMM INCORPORATED

发明人： Ruiming Zheng ,  Yisheng Xue

IPC分类号： H04L12/801 ,  H04L12/931

CPC分类号： H04L47/11 ,  H04L47/12 ,  H04L49/00 ,  H04L49/351

摘要： A method and apparatus for reducing data congestion in Clos networks is disclosed. A congestion detector is provided at an output port of a first layer of the Clos network. A pause timer is provided at an input port of a second layer of the Clos network. The congestion detector generates a feedback message indicating a data congestion level of the output port, and the pause timer determines a pause duration based on the feedback message. For example, the pause duration may be proportional to the congestion level of the output port of the first layer. A pause signal generator may also be provided at the input port to generate a first pause signal based on the pause duration. The pause signal generator may further output the pause signal to a transmitting device to suspend a transmission of data for the pause duration.

摘要翻译： 公开了一种用于减少Clos网络中的数据拥塞的方法和装置。 在Clos网络的第一层的输出端口处提供拥塞检测器。 在Clos网络的第二层的输入端口处提供暂停定时器。 拥塞检测器产生指示输出端口的数据拥塞级别的反馈消息，并且暂停计时器基于反馈消息确定暂停持续时间。 例如，暂停持续时间可以与第一层的输出端口的拥塞级别成比例。 还可以在输入端口处提供暂停信号发生器，以基于暂停持续时间产生第一暂停信号。 暂停信号发生器还可以将暂停信号输出到发送装置，以暂停用于暂停持续时间的数据的发送。

公开(公告)号：US20130195232A1

公开(公告)日：2013-08-01

申请号：US13504670

申请日：2009-11-27

申请人： Jiye Liang ,  Michael Fan ,  Yisheng Xue

发明人： Jiye Liang ,  Michael Fan ,  Yisheng Xue

IPC分类号： H04B1/10

CPC分类号： H04B1/10 ,  H04B1/7107 ,  H04B1/71072

摘要： Techniques for interference cancellation in a CDMA system. In an exemplary embodiment, a channel set scrambled using a secondary scrambling code (SSC) is estimated and cancelled along with a channel set scrambled using a primary scrambling code (SSC). The estimation and cancellation of the SSC channel set may proceed in series with the estimation and cancellation of the PSC channel set. Alternatively, the estimation of the SSC channel set may proceed in parallel with the estimation of the PSC channel set, and the cancellations of the PSC and SSC channel sets may be simultaneously performed. Multiple iterations of such estimation and cancellation may be performed in a successive interference cancellation (SIC) scheme.

摘要翻译： CDMA系统干扰消除技术。 在示例性实施例中，使用次扰码（SSC）加密的信道集合被估计和消除，以及使用主扰码（SSC）加密的信道集。 SSC信道集的估计和消除可以与PSC信道集的估计和消除串联进行。 或者，SSC信道集的估计可以与PSC信道集的估计并行进行，并且可以同时执行PSC和SSC信道集的取消。 可以在连续干扰消除（SIC）方案中执行这种估计和消除的多次迭代。

公开(公告)号：US20120243515A1

公开(公告)日：2012-09-27

申请号：US13504699

申请日：2009-11-27

申请人： Yisheng Xue ,  Mingxi Fan ,  Jiye Liang

发明人： Yisheng Xue ,  Mingxi Fan ,  Jiye Liang

IPC分类号： H04W72/04

CPC分类号： H03M13/23 ,  H03M13/09 ,  H03M13/3938 ,  H03M13/41 ,  H03M13/6306 ,  H03M13/6525 ,  H03M13/653 ,  H03M13/6558 ,  H04L1/1887

摘要： Techniques to increase the capacity of a W-CDMA wireless communications system. In an exemplary embodiment, early termination (400) of one or more transport channels on a W-CDMA wireless communications link is provided. In particular, early decoding (421, 423) is performed on slots as they are received over the air, and techniques are described for signaling (431, 432) acknowledgment messages (ACK's) for one or more transport channels correctly decoded to terminate the transmission of those transport channels. The techniques may be applied to the transmission of voice signals using the adaptive multi-rate (AMR) codec. Further exemplary embodiments describe aspects to reduce the transmission power and rate of power control commands sent over the air, as well as aspects for applying tail-biting convolutional codes (1015) in the system.

公开(公告)号：US09509452B2

公开(公告)日：2016-11-29

申请号：US13504692

申请日：2009-11-27

申请人： Jiye Liang ,  Mingxi Fan ,  Yisheng Xue

发明人： Jiye Liang ,  Mingxi Fan ,  Yisheng Xue

IPC分类号： H04L1/18 ,  H04L1/00 ,  H04W52/60

CPC分类号： H04L1/1854 ,  H04L1/0025 ,  H04L1/0053 ,  H04L1/0067 ,  H04L1/0071 ,  H04W52/60

摘要： Techniques to increase the capacity of a W-CDMA wireless communications system. In an exemplary embodiment, early termination of one or more transport channels on a W-CDMA wireless communications link is provided. In particular, early decoding is performed on slots as they are received over the air, and techniques are described for signaling acknowledgment messages (ACK's) for one or more transport channels correctly decoded to terminate the transmission of those transport channels. The techniques may be applied to the transmission of voice signals using the adaptive multi-rate (AMR) codec. Further exemplary embodiments describe aspects to reduce the transmission power and rate of power control commands sent over the air, as well as aspects for applying tail-biting convolutional codes in the system.

摘要翻译： 提高W-CDMA无线通信系统容量的技术。 在示例性实施例中，提供了W-CDMA无线通信链路上的一个或多个传输信道的提前终止。 具体地说，在时隙上执行早期解码，因为它们是通过空中接收的，并且描述了用于为正确解码的一个或多个传输信道发送确认消息（ACK）的技术，以终止这些传输信道的传输。 这些技术可以应用于使用自适应多速率（AMR）编解码器的语音信号的传输。 其它示例性实施例描述了降低通过空中发送的功率控制命令的传输功率和速率的方面以及在系统中应用尾巴卷积码的方面。

公开(公告)号：US08831156B2

公开(公告)日：2014-09-09

申请号：US13504670

申请日：2009-11-27

申请人： Jiye Liang ,  Michael Fan ,  Yisheng Xue

发明人： Jiye Liang ,  Michael Fan ,  Yisheng Xue

IPC分类号： H03D1/04 ,  H04B1/10 ,  H04B1/7107

CPC分类号： H04B1/10 ,  H04B1/7107 ,  H04B1/71072

摘要： Techniques for interference cancellation in a CDMA system. In an exemplary embodiment, a channel set scrambled using a secondary scrambling code (SSC) is estimated and cancelled along with a channel set scrambled using a primary scrambling code (SSC). The estimation and cancellation of the SSC channel set may proceed in series with the estimation and cancellation of the PSC channel set. Alternatively, the estimation of the SSC channel set may proceed in parallel with the estimation of the PSC channel set, and the cancellations of the PSC and SSC channel sets may be simultaneously performed. Multiple iterations of such estimation and cancellation may be performed in a successive interference cancellation (SIC) scheme.

摘要翻译： CDMA系统干扰消除技术。 在示例性实施例中，使用次扰码（SSC）加密的信道集合被估计和消除，以及使用主扰码（SSC）加密的信道集。 SSC信道集的估计和消除可以与PSC信道集的估计和消除串联进行。 或者，SSC信道集的估计可以与PSC信道集的估计并行进行，并且可以同时执行PSC和SSC信道集的取消。 可以在连续干扰消除（SIC）方案中执行这种估计和消除的多次迭代。

公开(公告)号：US09673837B2

公开(公告)日：2017-06-06

申请号：US13504699

申请日：2009-11-27

申请人： Yisheng Xue ,  Mingxi Fan ,  Jiye Liang

发明人： Yisheng Xue ,  Mingxi Fan ,  Jiye Liang

IPC分类号： H04W72/04 ,  H03M13/23 ,  H03M13/39 ,  H03M13/41 ,  H03M13/00 ,  H04L1/18 ,  H03M13/09

CPC分类号： H03M13/23 ,  H03M13/09 ,  H03M13/3938 ,  H03M13/41 ,  H03M13/6306 ,  H03M13/6525 ,  H03M13/653 ,  H03M13/6558 ,  H04L1/1887

摘要： Techniques to increase the capacity of a W-CDMA wireless communications system. In an exemplary embodiment, early termination (400) of one or more transport channels on a W-CDMA wireless communications link is provided. In particular, early decoding (421, 423) is performed on slots as they are received over the air, and techniques are described for signaling (431, 432) acknowledgment messages (ACK's) for one or more transport channels correctly decoded to terminate the transmission of those transport channels. The techniques may be applied to the transmission of voice signals using the adaptive multi-rate (AMR) codec. Further exemplary embodiments describe aspects to reduce the transmission power and rate of power control commands sent over the air, as well as aspects for applying tail-biting convolutional codes (1015) in the system.

公开(公告)号：US20120281675A1

公开(公告)日：2012-11-08

申请号：US13504692

申请日：2009-11-27

申请人： Jiye Liang ,  Mingxi Fan ,  Yisheng Xue

发明人： Jiye Liang ,  Mingxi Fan ,  Yisheng Xue

IPC分类号： H04W72/10 ,  H04W36/18 ,  H04W72/04

CPC分类号： H04L1/1854 ,  H04L1/0025 ,  H04L1/0053 ,  H04L1/0067 ,  H04L1/0071 ,  H04W52/60

摘要： Techniques to increase the capacity of a W-CDMA wireless communications system. In an exemplary embodiment, early termination (400) of one or more transport channels on a W-CDMA wireless communications link is provided. In particular, early decoding (421, 423) is performed on slots as they are received over the air, and techniques are described for signaling (431, 432) acknowledgment messages (ACK's) for one or more transport channels correctly decoded to terminate the transmission of those transport channels. The techniques may be applied to the transmission of voice signals using the adaptive multi-rate (AMR) codec. Further exemplary embodiments describe aspects to reduce the transmission power and rate of power control commands sent over the air, as well as aspects for applying tail-biting convolutional codes (1015) in the system.

摘要翻译： 提高W-CDMA无线通信系统容量的技术。 在示例性实施例中，提供了W-CDMA无线通信链路上的一个或多个传输信道的提前终止（400）。 具体地说，在空中接收时，在时隙上执行早期解码（421,423），并且描述了为正确解码以终止传输的一个或多个传输信道的信令（431,432）确认消息（ACK）的技术 的这些运输渠道。 这些技术可以应用于使用自适应多速率（AMR）编解码器的语音信号的传输。 另外的示例性实施例描述了降低通过空中发送的功率控制命令的传输功率和速率的方面以及用于在系统中应用尾巴卷积码（1015）的方面。