Upstream adaptive modulation in a communications system
    1.
    发明申请
    Upstream adaptive modulation in a communications system 有权
    通信系统中的上行自适应调制

    公开(公告)号:US20090028187A1

    公开(公告)日:2009-01-29

    申请号:US12219504

    申请日:2008-07-23

    IPC分类号: H04J3/22

    CPC分类号: H04B7/18513

    摘要: A system and method for providing upstream adaptive modulation. Burst parameters associated with a range of data interval usage codes (IUCs) are defined. Each of the data IUCs has a different modulation order and forward error correction (FEC). The SNR and codeword error rate for each satellite modem in the network are monitored. The data IUCs are dynamically assigned to different satellite modems within an upstream channel based on SNR and/or codeword error rate to enable each of the satellite modems in the upstream channel to achieve maximum bandwidth efficiency during upstream data transmissions. Bandwidth requests are received from the satellite modems and granted. The grant includes the assigned data IUC. The data bursts received in the upstream channel are each processed using the parameters from the assigned IUC for each of the satellite modems sending data in the upstream channel. When any of the satellite modems' SNR and/or codeword error rate changes, the data IUC for that satellite modem is changed accordingly.

    摘要翻译: 一种用于提供上行自适应调制的系统和方法。 定义与数据间隔使用代码(IUC)的范围相关联的突发参数。 每个数据IUC具有不同的调制阶数和前向纠错(FEC)。 监测网络中每个卫星调制解调器的SNR和码字错误率。 基于SNR和/或码字错误率,数据IUC被动态地分配给上游信道内的不同卫星调制解调器,以使上游信道中的每个卫星调制解调器能够在上行数据传输期间实现最大带宽效率。 带宽请求从卫星调制解调器接收并被授权。 授权包括分配的数据IUC。 在上游信道中接收的数据突发信号都使用来自所分配的IUC的参数来处理,每个卫星调制解调器在上行信道中发送数据。 当任何卫星调制解调器的SNR和/或码字错误率改变时,该卫星调制解调器的数据IUC相应地改变。

    Upstream Adaptive Modulation in a Communications System
    2.
    发明申请
    Upstream Adaptive Modulation in a Communications System 失效
    通信系统中的上行自适应调制

    公开(公告)号:US20110274151A1

    公开(公告)日:2011-11-10

    申请号:US12980137

    申请日:2010-12-28

    IPC分类号: H04B17/00

    CPC分类号: H04B7/18513

    摘要: A system and method for providing upstream adaptive modulation. Burst parameters associated with a range of data interval usage codes (IUCs) are defined. Each of the data IUCs has a different modulation order and forward error correction (FEC). The SNR and codeword error rate for each satellite modem in the network are monitored. The data IUCs are dynamically assigned to different satellite modems within an upstream channel based on SNR and/or codeword error rate to enable each of the satellite modems in the upstream channel to achieve maximum bandwidth efficiency during upstream data transmissions. Bandwidth requests are received from the satellite modems and granted. The grant includes the assigned data IUC. The data bursts received in the upstream channel are each processed using the parameters from the assigned IUC for each of the satellite modems sending data in the upstream channel. When any of the satellite modems' SNR and/or codeword error rate changes, the data IUC for that satellite modem is changed accordingly.

    摘要翻译: 一种用于提供上行自适应调制的系统和方法。 定义与数据间隔使用代码(IUC)的范围相关联的突发参数。 每个数据IUC具有不同的调制阶数和前向纠错(FEC)。 监测网络中每个卫星调制解调器的SNR和码字错误率。 基于SNR和/或码字错误率,数据IUC被动态地分配给上游信道内的不同卫星调制解调器,以使上游信道中的每个卫星调制解调器能够在上行数据传输期间实现最大带宽效率。 带宽请求从卫星调制解调器接收并被授权。 授权包括分配的数据IUC。 在上游信道中接收的数据突发信号都使用来自所分配的IUC的参数来处理,每个卫星调制解调器在上行信道中发送数据。 当任何卫星调制解调器的SNR和/或码字错误率改变时,该卫星调制解调器的数据IUC相应地改变。

    Upstream adaptive modulation in a communications system
    3.
    发明授权
    Upstream adaptive modulation in a communications system 有权
    通信系统中的上行自适应调制

    公开(公告)号:US07860041B2

    公开(公告)日:2010-12-28

    申请号:US12219504

    申请日:2008-07-23

    IPC分类号: H04B7/185

    CPC分类号: H04B7/18513

    摘要: A system and method for providing upstream adaptive modulation. Burst parameters associated with a range of data interval usage codes (IUCs) are defined. Each of the data IUCs has a different modulation order and forward error correction (FEC). The SNR and codeword error rate for each satellite modem in the network are monitored. The data IUCs are dynamically assigned to different satellite modems within an upstream channel based on SNR and/or codeword error rate to enable each of the satellite modems in the upstream channel to achieve maximum bandwidth efficiency during upstream data transmissions. Bandwidth requests are received from the satellite modems and granted. The grant includes the assigned data IUC. The data bursts received in the upstream channel are each processed using the parameters from the assigned IUC for each of the satellite modems sending data in the upstream channel. When any of the satellite modems' SNR and/or codeword error rate changes, the data IUC for that satellite modem is changed accordingly.

    摘要翻译: 一种用于提供上行自适应调制的系统和方法。 定义与数据间隔使用代码(IUC)的范围相关联的突发参数。 每个数据IUC具有不同的调制阶数和前向纠错(FEC)。 监测网络中每个卫星调制解调器的SNR和码字错误率。 基于SNR和/或码字错误率,数据IUC被动态地分配给上游信道内的不同卫星调制解调器,以使上游信道中的每个卫星调制解调器能够在上行数据传输期间实现最大带宽效率。 带宽请求从卫星调制解调器接收并被授权。 授权包括分配的数据IUC。 在上游信道中接收的数据突发信号都使用来自所分配的IUC的参数来处理,每个卫星调制解调器在上行信道中发送数据。 当任何卫星调制解调器的SNR和/或码字错误率改变时,该卫星调制解调器的数据IUC相应地改变。

    Upstream frequency control for docsis based satellite systems
    4.
    发明授权
    Upstream frequency control for docsis based satellite systems 有权
    基于文档的卫星系统的上行频率控制

    公开(公告)号:US07463707B2

    公开(公告)日:2008-12-09

    申请号:US10352244

    申请日:2003-01-28

    IPC分类号: H04L7/00 H03D3/24

    CPC分类号: H04B7/18513

    摘要: A system and method for minimizing the frequency error of satellite modem signals at a satellite gateway. The gateway downstream baud (symbol) clock and the elements that control the upstream frequency (i.e., local oscillators in the conversion chain, A/D sample clocks) are locked to a common frequency reference. The gateway sends upstream satellite frequency offset information, such as satellite ephemeris data from which to calculate Doppler offset, to the satellite modem. The satellite modem locks the frequency of the satellite modems master oscillator to the recovered baud rate using a frequency locked loop. The satellite modem uses its master oscillator as the carrier reference for the upstream frequency up conversion. The satellite modem uses or calculates the upstream satellite frequency offset and compensates for this offset by shifting its center frequency.

    摘要翻译: 一种用于最小化在卫星网关处的卫星调制解调器信号的频率误差的系统和方法。 网关下游波特(符号)时钟和控制上行频率的元素(即转换链中的本地振荡器,A / D采样时钟)被锁定到公共频率参考。 网关向卫星调制解调器发送上行卫星频偏信息,例如从其计算多普勒频偏的卫星星历数据。 卫星调制解调器使用频率锁定环将卫星调制解调器主振荡器的频率锁定到恢复的波特率。 卫星调制解调器使用其主振荡器作为上行上行转换的载波参考。 卫星调制解调器使用或计算上游卫星频率偏移,并通过移动其中心频率来补偿该偏移。

    Upstream adaptive modulation in a communications system
    5.
    发明授权
    Upstream adaptive modulation in a communications system 失效
    通信系统中的上行自适应调制

    公开(公告)号:US08773986B2

    公开(公告)日:2014-07-08

    申请号:US12980137

    申请日:2010-12-28

    CPC分类号: H04B7/18513

    摘要: A system and method for providing upstream adaptive modulation. Burst parameters associated with a range of data interval usage codes (IUCs) are defined. Each of the data IUCs has a different modulation order and forward error correction (FEC). The SNR and codeword error rate for each satellite modem in the network are monitored. The data IUCs are dynamically assigned to different satellite modems within an upstream channel based on SNR and/or codeword error rate to enable each of the satellite modems in the upstream channel to achieve maximum bandwidth efficiency during upstream data transmissions. Bandwidth requests are received from the satellite modems and granted. The grant includes the assigned data IUC. The data bursts received in the upstream channel are each processed using the parameters from the assigned IUC for each of the satellite modems sending data in the upstream channel. When any of the satellite modems' SNR and/or codeword error rate changes, the data IUC for that satellite modem is changed accordingly.

    摘要翻译: 一种用于提供上行自适应调制的系统和方法。 定义与数据间隔使用代码(IUC)的范围相关联的突发参数。 每个数据IUC具有不同的调制阶数和前向纠错(FEC)。 监测网络中每个卫星调制解调器的SNR和码字错误率。 基于SNR和/或码字错误率,数据IUC被动态地分配给上游信道内的不同卫星调制解调器,以使上游信道中的每个卫星调制解调器能够在上行数据传输期间实现最大带宽效率。 带宽请求从卫星调制解调器接收并被授权。 授权包括分配的数据IUC。 在上游信道中接收的数据突发信号都使用来自所分配的IUC的参数来处理,每个卫星调制解调器在上行信道中发送数据。 当任何卫星调制解调器的SNR和/或码字错误率改变时,该卫星调制解调器的数据IUC相应地改变。

    Upstream adaptive modulation in DOCSIS based applications
    6.
    发明授权
    Upstream adaptive modulation in DOCSIS based applications 失效
    基于DOCSIS的应用中的上行自适应调制

    公开(公告)号:US07408892B2

    公开(公告)日:2008-08-05

    申请号:US10352251

    申请日:2003-01-28

    IPC分类号: H04B7/185

    CPC分类号: H04B7/18513

    摘要: A system and method for providing upstream adaptive modulation. Burst parameters associated with a range of data interval usage codes (IUCs) are defined. Each of the data IUCs has a different modulation order and forward error correction (FEC). The SNR and codeword error rate for each satellite modem in the network are monitored. The data IUCs are dynamically assigned to different satellite modems within an upstream channel based on SNR and/or codeword error rate to enable each of the satellite modems in the upstream channel to achieve maximum bandwidth efficiency during upstream data transmissions. Bandwidth requests are received from the satellite modems and granted. The grant includes the assigned data IUC. The data bursts received in the upstream channel are each processed using the parameters from the assigned IUC for each of the satellite modems sending data in the upstream channel. When any of the satellite modems' SNR and/or codeword error rate changes, the data IUC for that satellite modem is changed accordingly.

    摘要翻译: 一种用于提供上行自适应调制的系统和方法。 定义与数据间隔使用代码(IUC)的范围相关联的突发参数。 每个数据IUC具有不同的调制阶数和前向纠错(FEC)。 监测网络中每个卫星调制解调器的SNR和码字错误率。 基于SNR和/或码字错误率,数据IUC被动态地分配给上游信道内的不同卫星调制解调器,以使上游信道中的每个卫星调制解调器能够在上行数据传输期间实现最大带宽效率。 带宽请求从卫星调制解调器接收并被授权。 授权包括分配的数据IUC。 在上游信道中接收的数据突发信号都使用来自所分配的IUC的参数来处理,每个卫星调制解调器在上行信道中发送数据。 当任何卫星调制解调器的SNR和/或码字错误率改变时,该卫星调制解调器的数据IUC相应地改变。

    Turbo-coding DOCSIS information for satellite communications
    9.
    发明授权
    Turbo-coding DOCSIS information for satellite communications 有权
    用于卫星通信的Turbo编码DOCSIS信息

    公开(公告)号:US08010882B2

    公开(公告)日:2011-08-30

    申请号:US12754460

    申请日:2010-04-05

    IPC分类号: H03M13/03

    摘要: Methods and systems for modifying DOCSIS-based transmission paths for communication in higher frequency and/or wireless environments, such as wireless terrestrial communication systems and satellite communication systems. An inner turbo-code is combined with a DOCSIS based Reed-Solomon (“RS”) forward error correction (“FEC”) coding scheme, to produce a concatenated turbo-RS code (other FEC codes can be utilized). In phase and quadrature phase (“I-Q”) processing is utilized to enable relatively low cost up-converter implementations. The I-Q processing is preferably performed at baseband, essentially pre-compensating for analog variations in the transmit path. Power amplifier on/off control capable of controlling on/off RF power control of remote transmitters is modulated on a transmit cable to reduce the need for a separate cable.

    摘要翻译: 用于修改在诸如无线地面通信系统和卫星通信系统的较高频率和/或无线环境中进行通信的基于DOCSIS的传输路径的方法和系统。 内部turbo码与基于DOCSIS的Reed-Solomon(“RS”)前向纠错(“FEC”)编码方案组合,以产生级联的turbo-RS码(可以利用其他FEC码)。 使用同相和正交相位(“I-Q”)处理来实现相对低成本的上变频器实现。 优选地,在基带处执行I-Q处理,基本上对发送路径中的模拟变化进行预补偿。 功率放大器开/关控制能够控制远程发射机的开/关射频功率控制在发射电缆上进行调制,以减少对单独电缆的需要。

    Turbo-Coding DOCSIS Information for Satellite Communications
    10.
    发明申请
    Turbo-Coding DOCSIS Information for Satellite Communications 有权
    Turbo编码DOCSIS卫星通信信息

    公开(公告)号:US20100262895A1

    公开(公告)日:2010-10-14

    申请号:US12754460

    申请日:2010-04-05

    IPC分类号: H03M13/03

    摘要: Methods and systems for modifying DOCSIS-based transmission paths for communication in higher frequency and/or wireless environments, such as wireless terrestrial communication systems and satellite communication systems. An inner turbo-code is combined with a DOCSIS based Reed-Solomon (“RS”) forward error correction (“FEC”) coding scheme, to produce a concatenated turbo-RS code (other FEC codes can be utilized). In phase and quadrature phase (“I-Q”) processing is utilized to enable relatively low cost up-converter implementations. The I-Q processing is preferably performed at baseband, essentially pre-compensating for analog variations in the transmit path. Power amplifier on/off control capable of controlling on/off RF power control of remote transmitters is modulated on a transmit cable to reduce the need for a separate cable.

    摘要翻译: 用于修改在诸如无线地面通信系统和卫星通信系统的较高频率和/或无线环境中进行通信的基于DOCSIS的传输路径的方法和系统。 内部turbo码与基于DOCSIS的Reed-Solomon(“RS”)前向纠错(“FEC”)编码方案组合,以产生级联的turbo-RS码(可以利用其他FEC码)。 使用同相和正交相位(“I-Q”)处理来实现相对低成本的上变频器实现。 优选地,在基带处执行I-Q处理,基本上对发送路径中的模拟变化进行预补偿。 功率放大器开/关控制能够控制远程发射机的开/关射频功率控制在发射电缆上进行调制,以减少对单独电缆的需要。