Communication system with expandable capacity

    公开(公告)号:US10250363B2

    公开(公告)日:2019-04-02

    申请号:US14511997

    申请日:2014-10-10

    IPC分类号: H04L12/801 H04L5/00 H04W48/12

    摘要: Systems and methods for expanding capacity in a network without the use of frequency gaps between a legacy channel and/or newly added channels are provided. Systems and methods for maintaining legacy node operability in the expanded capacity network are also provided by determining the increased power experienced by a legacy node as a result of the newly added channels, and dynamically adapting the modulation utilized on the legacy channel commensurate with the increased power.

    Systems and methods for frequency error correction in communication systems
    3.
    发明授权
    Systems and methods for frequency error correction in communication systems 有权
    通信系统中频率误差校正的系统和方法

    公开(公告)号:US09510223B2

    公开(公告)日:2016-11-29

    申请号:US14532959

    申请日:2014-11-04

    摘要: Systems and methods for correcting frequency error in a received signal include: receiving a satellite signal, the satellite signal having a bandwidth and a center frequency; determining the profile of the satellite signal; computing the center frequency of the satellite signal based on the profile of the received signal; and generating a reference signal at the computed center frequency. The systems and methods may further include computing a center frequency of each of a plurality of satellite signals based on the computed center frequency. Determining the profile may include sweeping a tuner above and below a given reference frequency; measuring the received signal strength during the sweeping operation; and determining the profile based on the received signal strength.

    摘要翻译: 用于校正接收信号中的频率误差的系统和方法包括:接收卫星信号,卫星信号具有带宽和中心频率; 确定卫星信号的轮廓; 基于接收信号的轮廓计算卫星信号的中心频率; 以及在所计算的中心频率处产生参考信号。 系统和方法还可以包括基于所计算的中心频率来计算多个卫星信号中的每一个的中心频率。 确定轮廓可以包括在给定参考频率之上和之下扫描调谐器; 在扫描操作期间测量接收信号强度; 以及基于所接收的信号强度确定简档。

    Systems and methods for shared analog-to-digital conversion in a communication system
    4.
    发明授权
    Systems and methods for shared analog-to-digital conversion in a communication system 有权
    在通信系统中共享模数转换的系统和方法

    公开(公告)号:US09509396B2

    公开(公告)日:2016-11-29

    申请号:US14532918

    申请日:2014-11-04

    IPC分类号: H04B7/14 H04B7/185

    摘要: A low noise block circuit includes a first input signal trace configured to receive a first satellite signal centered at a first frequency; a second signal trace configured to receive a second satellite signal centered at a second frequency; a combiner having a first input connected to the first input signal trace and a second input connected to the second signal trace, and configured to combine the first and second satellite signals to generate and output a combined satellite signal; and an analog-to-digital converter element having a first input coupled to receive the combined satellite signal, and configured to convert the combined satellite signal from an analog signal to a digital signal.

    摘要翻译: 低噪声块电路包括被配置为接收以第一频率为中心的第一卫星信号的第一输入信号迹线; 第二信号迹线,被配置为接收以第二频率为中心的第二卫星信号; 组合器,其具有连接到第一输入信号迹线的第一输入端和连接到第二信号迹线的第二输入端,并且被配置为组合第一和第二卫星信号以产生和输出组合卫星信号; 以及模拟 - 数字转换器元件,其具有被耦合以接收组合的卫星信号的第一输入,并且被配置为将组合的卫星信号从模拟信号转换成数字信号。

    COMMUNICATION TRANSCEIVER INTERFACE
    5.
    发明申请
    COMMUNICATION TRANSCEIVER INTERFACE 有权
    通信收发器接口

    公开(公告)号:US20160099736A1

    公开(公告)日:2016-04-07

    申请号:US14505200

    申请日:2014-10-02

    IPC分类号: H04B1/10 H04B1/40 H04L5/14

    摘要: A communication system includes a communication transceiver with analog interfaces to interface to baseband circuitry and PAs/LNAs. The communication transceiver can include digital tuning and an analog-to-digital and digital-to-analog converter to allow the digital tuner to communicate with the baseband circuitry and PAs/LNAs A plurality of switches may be provided so that the analog-to-digital converter and digital-to-analog converter may be shared for both the interface to the baseband circuitry and the interface to the PAs/LNAs.

    摘要翻译: 通信系统包括具有与基带电路和PA / LNA相连接的模拟接口的通信收发器。 通信收发器可以包括数字调谐以及模拟数字和数模转换器,以允许数字调谐器与基带电路和PA / LNA通信。可以提供多个开关,使得模拟 - 数字转换器和数模转换器可以共享到基带电路的接口和与PA / LNA的接口。

    LDPC code matrices
    6.
    发明授权
    LDPC code matrices 有权
    LDPC码矩阵

    公开(公告)号:US09264074B2

    公开(公告)日:2016-02-16

    申请号:US14177707

    申请日:2014-02-11

    IPC分类号: H03M13/00 H03M13/11

    摘要: An LDPC parity check matrix includes a systematic portion having a plurality of systematic elements and a parity portion having a plurality of parity elements. The value of each systematic element determines a cyclic shift to be applied to rows of an identity submatrix corresponding to that element. The value of each parity element determines a cyclic shift to be applied to rows of an identity submatrix corresponding to that element. The weights of each column of a group of columns of the parity portion are the same.

    摘要翻译: LDPC奇偶校验矩阵包括具有多个系统元素的系统部分和具有多个奇偶校验元素的奇偶校验部分。 每个系统元素的值确定要应用于与该元素相对应的身份子矩阵的行的循环移位。 每个奇偶校验元素的值确定要应用于与该元素相对应的身份子矩阵的行的循环移位。 奇偶校验部分的一组列的每列的权重相同。

    BROADBAND CABLE NETWORK UTILIZING COMMON BIT-LOADING
    7.
    发明申请
    BROADBAND CABLE NETWORK UTILIZING COMMON BIT-LOADING 有权
    宽带电缆网络使用通用加载

    公开(公告)号:US20150358220A1

    公开(公告)日:2015-12-10

    申请号:US14829036

    申请日:2015-08-18

    摘要: A network for determining a common bit-loading modulation scheme for communicating between nodes in the network is disclosed. The network may include a transmitting node within the plurality of nodes where the transmitting node is capable of sending a probe signal to the nodes, and at least one receiving node within the plurality of nodes in signal communication with the transmitting node. The at least one receiving node is capable of transmitting a first response signal in response to receiving the probe signal. The first response signal includes a first bit-loading modulation scheme determined by the at least one receiving node. The transmitting node is further capable of determining the common bit-loading modulation scheme from the first response signal.

    摘要翻译: 公开了一种用于确定用于在网络中的节点之间进行通信的公共比特加载调制方案的网络。 所述网络可以包括所述多个节点内的发射节点,其中所述发射节点能够向所述节点发送探测信号,以及所述多个节点内的至少一个接收节点与所述发射节点进行信号通信。 响应于接收到探测信号,至少一个接收节点能够发送第一响应信号。 第一响应信号包括由至少一个接收节点确定的第一位加载调制方案。 发送节点还能够从第一响应信号确定公共比特加载调制方案。

    METHOD AND APPARATUS FOR CALIBRATION OF A TIME INTERLEAVED ADC
    9.
    发明申请
    METHOD AND APPARATUS FOR CALIBRATION OF A TIME INTERLEAVED ADC 有权
    用于校准时间间隔ADC的方法和装置

    公开(公告)号:US20150280725A1

    公开(公告)日:2015-10-01

    申请号:US14322514

    申请日:2014-07-02

    IPC分类号: H03M1/12 H03M1/08 H03M1/38

    摘要: Systems and methods for converting analog signals to digital signals. A reference slice is associated with each of a plurality of active slices to balance the loading on an active sampling track and hold amplifier within each active slice. Alternatively, the reference slice is split into a portion having a reference ADC that is shared by a plurality of partial reference slices, each partial reference slice having a partial reference input module.

    摘要翻译: 将模拟信号转换为数字信号的系统和方法。 参考切片与多个活动切片中的每一个相关联,以平衡每个活动切片内的有源采样轨道和保持放大器上的负载。 或者,参考切片被分割成具有由多个部分参考切片共享的参考ADC的部分,每个部分参考切片具有部分参考输入模块。

    Method and apparatus for calibration of a time interleaved ADC
    10.
    发明授权
    Method and apparatus for calibration of a time interleaved ADC 有权
    用于校准时间交错ADC的方法和装置

    公开(公告)号:US09143149B1

    公开(公告)日:2015-09-22

    申请号:US14322514

    申请日:2014-07-02

    摘要: Systems and methods for converting analog signals to digital signals. A reference slice is associated with each of a plurality of active slices to balance the loading on an active sampling track and hold amplifier within each active slice. Alternatively, the reference slice is split into a portion having a reference ADC that is shared by a plurality of partial reference slices, each partial reference slice having a partial reference input module.

    摘要翻译: 将模拟信号转换为数字信号的系统和方法。 参考切片与多个活动切片中的每一个相关联,以平衡每个活动切片内的有源采样轨道和保持放大器上的负载。 或者,参考切片被分割成具有由多个部分参考切片共享的参考ADC的部分,每个部分参考切片具有部分参考输入模块。