公开(公告)号：US20140153672A1

公开(公告)日：2014-06-05

申请号：US13946706

申请日：2013-07-19

Applicant: QUALCOMM Incorporated

Inventor： Lu Zhao ,  Stefan Brueck ,  Stephan Schlupkothen ,  Muhammad Awais Amin ,  Juan Montojo ,  Marc W. Werner ,  Hendrik Schoeneich

IPC: H04L27/06

CPC classification number: H04L27/06 ,  H04L1/0036 ,  H04L1/005 ,  H04L1/0057 ,  H04L27/3416

Abstract: A receiver circuit, including a multi-stage QAM de-mapper, for receiving a QAM data signal is disclosed. A first de-mapper circuit recovers a set of encoded data bits from the QAM data signal by calculating a plurality of distances between a received QAM symbol and each of a plurality of possible constellation points. A second de-mapper circuit then generates a set of unencoded data bits for the received QAM symbol based, at least in part, on the plurality of distances calculated by the first de-mapper circuit. The receiver circuit may further include a decoder circuit to decode the set of encoded data bits recovered by the first de-mapper circuit. The second de-mapper circuit may identify a subset of the plurality of possible constellation points based on a result of the decoding and select a constellation point that is associated with the shortest distance of the plurality of distances.

Abstract translation: 公开了一种用于接收QAM数据信号的包括多级QAM解映射器的接收机电路。 第一解映射器电路通过计算接收的QAM符号和多个可能的星座点中的每一个之间的多个距离，从QAM数据信号中恢复一组编码数据位。 然后，第二解映射器电路至少部分地基于由第一解映射器电路计算的多个距离来生成用于所接收的QAM符号的一组未编码数据位。 接收器电路还可以包括解码器电路，以对由第一解映射器电路恢复的编码数据位组进行解码。 第二解映射器电路可以基于解码的结果来识别多个可能的星座点的子集，并且选择与多个距离中的最短距离相关联的星座点。

公开(公告)号：US09397776B2

公开(公告)日：2016-07-19

申请号：US13919765

申请日：2013-06-17

Applicant: QUALCOMM Incorporated

Inventor： Marc W. Werner ,  Andrea Garavaglia ,  Nicola Varanese ,  Patrick Stupar

IPC: H04B10/27 ,  H04L27/34 ,  H04J14/02 ,  H04L1/00 ,  H04L5/00 ,  H04Q11/00 ,  H04L27/00

CPC classification number: H04J14/0238 ,  H04B10/27 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L5/0039 ,  H04L5/0046 ,  H04L5/006 ,  H04L27/0008 ,  H04L27/34 ,  H04Q11/0071 ,  H04Q2011/0064

Abstract: A coax line terminal (CLT) transmits allocations of upstream bandwidth to a plurality of coax network units (CNUs). In response to the allocations, the CLT receives frames with data in a plurality of physical resource blocks that each correspond to a distinct set of subcarriers. The plurality of physical resource blocks includes a first group of physical resource blocks that all have a first constant allowed capacity. Sizes and modulation orders of respective physical resource blocks in the first group vary as defined by a first modulation profile. The data in the first group are received from one or more CNUs that are assigned the first modulation profile.

Abstract translation: 同轴线路终端（CLT）向多个同轴网络单元（CNU）发送上行带宽的分配。 响应于分配，CLT接收具有多个物理资源块中的数据的帧，每个物理资源块对应于一组不同的子载波。 多个物理资源块包括全部具有第一恒定允许容量的第一组物理资源块。 第一组中相应物理资源块的大小和调制阶数根据第一调制曲线所定义而变化。 从分配了第一调制曲线的一个或多个CNU接收第一组中的数据。

公开(公告)号：US20150304065A1

公开(公告)日：2015-10-22

申请号：US13919765

申请日：2013-06-17

Applicant: QUALCOMM Incorporated

Inventor： Marc W. Werner ,  Andrea Garavaglia ,  Nicola Varanese ,  Patrick Stupar

IPC: H04J14/02 ,  H04B10/27

CPC classification number: H04J14/0238 ,  H04B10/27 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L5/0039 ,  H04L5/0046 ,  H04L5/006 ,  H04L27/0008 ,  H04L27/34 ,  H04Q11/0071 ,  H04Q2011/0064

Abstract: A coax line terminal (CLT) transmits allocations of upstream bandwidth to a plurality of coax network units (CNUs). In response to the allocations, the CLT receives frames with data in a plurality of physical resource blocks that each correspond to a distinct set of subcarriers. The plurality of physical resource blocks includes a first group of physical resource blocks that all have a first constant allowed capacity. Sizes and modulation orders of respective physical resource blocks in the first group vary as defined by a first modulation profile. The data in the first group are received from one or more CNUs that are assigned the first modulation profile.

Abstract translation: 同轴线路终端（CLT）向多个同轴网络单元（CNU）发送上行带宽的分配。 响应于分配，CLT接收具有多个物理资源块中的数据的帧，每个物理资源块对应于一组不同的子载波。 多个物理资源块包括全部具有第一恒定允许容量的第一组物理资源块。 第一组中相应物理资源块的大小和调制阶数根据第一调制曲线所定义而变化。 从分配了第一调制曲线的一个或多个CNU接收第一组中的数据。

公开(公告)号：US09106470B2

公开(公告)日：2015-08-11

申请号：US13946706

申请日：2013-07-19

Applicant: QUALCOMM Incorporated

Inventor： Lu Zhao ,  Stefan Brueck ,  Stephan Schlupkothen ,  Muhammad Awais Amin ,  Juan Montojo ,  Marc W. Werner ,  Hendrik Schoeneich

IPC: H03D1/24 ,  H04L27/06 ,  H04L27/34 ,  H04L1/00

CPC classification number: H04L27/06 ,  H04L1/0036 ,  H04L1/005 ,  H04L1/0057 ,  H04L27/3416

Abstract: A receiver circuit, including a multi-stage QAM de-mapper, for receiving a QAM data signal is disclosed. A first de-mapper circuit recovers a set of encoded data bits from the QAM data signal by calculating a plurality of distances between a received QAM symbol and each of a plurality of possible constellation points. A second de-mapper circuit then generates a set of unencoded data bits for the received QAM symbol based, at least in part, on the plurality of distances calculated by the first de-mapper circuit. The receiver circuit may further include a decoder circuit to decode the set of encoded data bits recovered by the first de-mapper circuit. The second de-mapper circuit may identify a subset of the plurality of possible constellation points based on a result of the decoding and select a constellation point that is associated with the shortest distance of the plurality of distances.

Abstract translation: 公开了一种用于接收QAM数据信号的包括多级QAM解映射器的接收机电路。 第一解映射器电路通过计算接收的QAM符号和多个可能的星座点中的每一个之间的多个距离，从QAM数据信号中恢复一组编码数据位。 然后，第二解映射器电路至少部分地基于由第一解映射器电路计算的多个距离来生成用于所接收的QAM符号的一组未编码数据位。 接收器电路还可以包括解码器电路，以对由第一解映射器电路恢复的编码数据位组进行解码。 第二解映射器电路可以基于解码的结果来识别多个可能的星座点的子集，并且选择与多个距离中的最短距离相关联的星座点。

公开(公告)号：US20140269868A1

公开(公告)日：2014-09-18

申请号：US13828996

申请日：2013-03-14

Applicant: QUALCOMM INCORPORATED

Inventor： Marc W. Werner ,  Stefan Brueck ,  Lawrence W. Yonge, III

IPC: H04B15/00 ,  H04B3/54

CPC classification number: H04B15/00 ,  H04B3/54 ,  H04B3/542 ,  H04B2203/5416 ,  H04B2203/5495 ,  H04L1/20 ,  H04L25/067

Abstract: An adaptive filter bank can be implemented on a PLC device to dynamically adapt to variations in notching requirements and the performance of the PLC medium. The PLC device can apply filter coefficients to one or more filter elements of the adaptive filter bank to generate one or more notched subcarriers in the PLC band. A performance measurement of one or more subcarriers in the PLC band can be determined and evaluated against corresponding performance measurement thresholds. For a given notched subcarrier, if the performance measurement of the corresponding subcarriers is not in accordance with the performance measurement threshold, updated filter coefficients for the filter element configured to generate the notched subcarrier can be determined based, at least in part, on the performance measurement of the one or more subcarriers. The filter coefficients of the filter element can then be updated using the updated filter coefficients.

Abstract translation: 可以在PLC设备上实现自适应滤波器组，以动态地适应PLC介质的开槽要求和性能的变化。 PLC设备可以将滤波器系数应用于自适应滤波器组的一个或多个滤波器元件，以在PLC频带中产生一个或多个有缺口的子载波。 可以根据相应的性能测量阈值确定和评估PLC频带中一个或多个子载波的性能测量。 对于给定的缺口子载波，如果相应子载波的性能测量不符合性能测量阈值，则可以至少部分地基于性能来确定被配置为生成缺陷副载波的滤波器元件的更新滤波器系数 一个或多个子载波的测量。 然后可以使用更新的滤波器系数来更新滤波器元件的滤波器系数。