Downstream Time Domain Based Adaptive Modulation for DOCSIS Based Applications
    41.
    发明申请
    Downstream Time Domain Based Adaptive Modulation for DOCSIS Based Applications 有权
    基于DOCSIS的应用的下行时域自适应调制

    公开(公告)号:US20100074167A1

    公开(公告)日:2010-03-25

    申请号:US12409461

    申请日:2009-03-23

    Abstract: In a DOCSIS based satellite gateway data is transmitted over a single downstream channel, at different throughput rates. Data destined for each subscriber/receiver is assigned a throughput rate depending upon the downstream signal quality of that subscriber/receiver. To accomplish this, the downstream DOCSIS MAC data is parsed to extract DOCSIS packets. The DOCSIS packets are then loaded into packet queues based on an identifier within such packets such as the MAC destination address or SID. Each of the queues represents a bandwidth efficiency or throughput rate that can be currently tolerated by specific subscribers based on the current signal quality being experienced at the subscriber location. A PHY-MAP describing the downstream data structure to be transmitted and inserted into the downstream data. Data is extracted from the packet queues in queue blocks as defined by the PHY-MAP. The queue blocks are modulated with transmission parameters appropriate for each queue block and transmitted to the DOCSIS based satellite modems. The satellite modems extract the PHY-MAP from the downstream data and use the information contained in it to demodulate and decode the queue for which they have sufficient downstream signal quality. Satellite modems measure and transmit downstream signal quality to the satellite gateway to be used to assigned traffic to the appropriate queues.

    Abstract translation: 在基于DOCSIS的卫星网关中,数据通过单个下游信道以不同的吞吐率传输。 根据该用户/接收机的下行信号质量为目的地为每个用户/接收机指定的数据被分配吞吐率。 为了实现这一点,下游DOCSIS MAC数据被解析以提取DOCSIS分组。 DOCSIS分组然后基于诸如MAC目的地址或SID之类的分组内的标识符加载到分组队列中。 每个队列表示基于当前在用户位置处经历的信号质量,特定订户可以容忍的带宽效率或吞吐率。 描述要发送并插入下游数据的下游数据结构的PHY-MAP。 从PHY-MAP定义的队列块中的数据包队列中提取数据。 使用适合于每个队列块的传输参数调制队列块,并将其发送到基于DOCSIS的卫星调制解调器。 卫星调制解调器从下游数据中提取PHY-MAP,并使用其中包含的信息对其具有足够的下行信号质量的队列进行解调和解码。 卫星调制解调器测量和传输下行信号质量到卫星网关,用于将流量分配给适当的队列。

    Downstream time domain based adaptive modulation for DOCSIS based applications
    42.
    发明授权
    Downstream time domain based adaptive modulation for DOCSIS based applications 失效
    基于DOCSIS的应用的下游时域自适应调制

    公开(公告)号:US07508785B2

    公开(公告)日:2009-03-24

    申请号:US10319929

    申请日:2002-12-12

    Abstract: In a DOCSIS based satellite gateway data is transmitted over a single downstream channel, at different throughput rates. Data destined for each subscriber/receiver is assigned a throughput rate depending upon the downstream signal quality of that subscriber/receiver. To accomplish this, the downstream DOCSIS MAC data is parsed to extract DOCSIS packets. The DOCSIS packets are then loaded into packet queues based on an identifier within such packets such as the MAC destination address or SID. Each of the queues represents a bandwidth efficiency or throughput rate that can be currently tolerated by specific subscribers based on the current signal quality being experienced at the subscriber location. A PHY-MAP describing the downstream data structure to be transmitted and inserted into the downstream data. Data is extracted from the packet queues in queue blocks as defined by the PHY-MAP. The queue blocks are modulated with transmission parameters appropriate for each queue block and transmitted to the DOCSIS based satellite modems. The satellite modems extract the PHY-MAP from the downstream data and use the information contained in it to demodulate and decode the queue for which they have sufficient downstream signal quality. Satellite modems measure and transmit downstream signal quality to the satellite gateway to be used to assigned traffic to the appropriate queues.

    Abstract translation: 在基于DOCSIS的卫星网关中,数据通过单个下游信道以不同的吞吐率传输。 根据该用户/接收机的下行信号质量为目的地为每个用户/接收机指定的数据被分配吞吐率。 为了实现这一点,下游DOCSIS MAC数据被解析以提取DOCSIS分组。 DOCSIS分组然后基于诸如MAC目的地址或SID之类的分组内的标识符加载到分组队列中。 每个队列表示基于当前在用户位置处经历的信号质量,特定订户可以容忍的带宽效率或吞吐率。 描述要发送并插入下游数据的下游数据结构的PHY-MAP。 从PHY-MAP定义的队列块中的数据包队列中提取数据。 使用适合于每个队列块的传输参数调制队列块,并将其发送到基于DOCSIS的卫星调制解调器。 卫星调制解调器从下游数据中提取PHY-MAP,并使用其中包含的信息对其具有足够的下行信号质量的队列进行解调和解码。 卫星调制解调器测量和传输下行信号质量到卫星网关,用于将流量分配给适当的队列。

    SYSTEM AND METHOD FOR TERRESTRIAL HIGH-DEFINITION TELEVISION RECEPTION
    43.
    发明申请
    SYSTEM AND METHOD FOR TERRESTRIAL HIGH-DEFINITION TELEVISION RECEPTION 有权
    用于地面高分辨率电视接收的系统和方法

    公开(公告)号:US20090051821A1

    公开(公告)日:2009-02-26

    申请号:US12255182

    申请日:2008-10-21

    CPC classification number: H04L25/0224 H04L27/0008 H04L2025/03503

    Abstract: An adaptive receiver is disclosed for optimally receiving and processing signals. The receiver utilizes one or more memory blocks to store groups of incoming symbols. The groups of symbols are processed by a channel estimation subsystem to determine channel characteristics. The receiver determines the appropriate demodulation and decoding strategy to implement based on the determined channel characteristics. The receiver includes a plurality of demodulation and decoding schemes, one of which is selected based on the results of a channel estimation analysis.

    Abstract translation: 公开了用于最佳地接收和处理信号的自适应接收机。 接收机利用一个或多个存储器块来存储输入符号组。 符号组由信道估计子系统处理以确定信道特性。 接收机根据确定的信道特性确定适当的解调和解码策略来实现。 接收机包括多个解调和解码方案,其中之一是基于信道估计分析的结果来选择的。

    Constellation-Multiplexed Transmitter and Receiver
    44.
    发明申请
    Constellation-Multiplexed Transmitter and Receiver 失效
    星座多路复用发射机和接收机

    公开(公告)号:US20080215652A1

    公开(公告)日:2008-09-04

    申请号:US11835223

    申请日:2007-08-07

    CPC classification number: H04L27/34 H04L1/0003 H04L25/03178 H04L25/03184

    Abstract: A device of dynamic communication of information allows, on the average, non-integer bits per symbol transmission, using a compact code set or a partial response decoding receiver. A stream of selectable predetermined integer bits, e.g., k or k+1 data bits, is grouped into a selectable integer number of bit vectors which then are mapped onto corresponding signal constellations forming transmission symbols. Two or more symbols can be grouped and further encoded, so that a symbol is spread across the two or more symbols being communicated. Sequence estimation using, for example, maximum likelihood techniques, as informed by noise estimates relative to the received signal. Each branch metric in computing the path metric of a considered sequence at the receiver is weighted by the inverse of the noise power. It is desirable that the constellation selection, sequence estimation and noise estimation be performed continuously and dynamically.

    Abstract translation: 使用紧凑代码集或部分响应解码接收器的信息的动态通信装置平均允许每个符号传输的非整数比特。 可选择的预定整数比特流(例如k或k + 1个数据比特)被分组成可选择的整数个比特向量,然后将其映射到形成发送符号的相应的信号星座上。 可以对两个或更多个符号进行分组和进一步编码,使得符号分布在所传送的两个或更多个符号之间。 使用例如最大似然技术的序列估计,通过相对于接收信号的噪声估计来通知。 在接收机处计算所考虑的序列的路径度量的每个分支度量被噪声功率的倒数加权。 期望连续动态地执行星座选择,序列估计和噪声估计。

    PHY sub-channel processing
    45.
    发明申请
    PHY sub-channel processing 有权
    PHY子通道处理

    公开(公告)号:US20080019465A1

    公开(公告)日:2008-01-24

    申请号:US11832530

    申请日:2007-08-01

    CPC classification number: H04L1/0072 H04L1/0041 H04L2001/0097

    Abstract: Physical layer (PHY) sub-channel processing. A soft symbol decision stream is arranged into a number of sub-channels to reduce substantially the processing performed within a communication receiver on data that is not intended for that communication receiver. In other embodiments, a predetermined approach is employed to arrange the soft symbol decision stream into one or more frames; each frame may have one or more soft symbol blocks; and each soft symbol block may have one or more symbols. Each of the soft symbol blocks, within a frame, may be assigned to a sub-channel. Only the soft symbol blocks that contain information destined for the communication receiver need be decoded. Only the sub-channel that includes these soft symbol blocks, destined for this communication receiver, need be decoded. The soft symbol blocks not within the sub-channel may be discarded thereby recovering some of the processing capabilities of the communication receiver.

    Abstract translation: 物理层(PHY)子通道处理。 软符号决策流被布置成多个子信道,以基本上减少在通信接收机内对不是针对该通信接收机的数据执行的处理。 在其他实施例中,采用预定方法将软符号决策流布置成一个或多个帧; 每个帧可以具有一个或多个软符号块; 并且每个软符号块可以具有一个或多个符号。 帧中的每个软符号块可以被分配给子信道。 只需要包含指定给通信接收器的信息的软符号块被解码。 只需要包含去往该通信接收机的这些软符号块的子信道被解码。 不在子信道内的软符号块可能被丢弃,从而恢复通信接收机的一些处理能力。

    Bioanalytical instrumentation using a light source subsystem
    46.
    发明申请
    Bioanalytical instrumentation using a light source subsystem 有权
    使用光源子系统的生物分析仪器

    公开(公告)号:US20070281322A1

    公开(公告)日:2007-12-06

    申请号:US11805185

    申请日:2007-05-21

    Abstract: The invention relates to a light source for irradiating molecules present in a detection volume with one or more selected wavelengths of light and directing the fluorescence, absorbance, transmittance, scattering onto one or more detectors. Molecular interactions with the light allow for the identification and quantitation of participating chemical moieties in reactions utilizing physical or chemical tags, most typically fluorescent and chromophore labels. The invention can also use the light source to separately and simultaneously irradiate a plurality of capillaries or other flow confining structures with one or more selected wavelengths of light and separately and simultaneously detect fluorescence produced within the capillaries or other flow confining structures. In various embodiments, the flow confining structures can allow separation or transportation of molecules and include capillary, micro bore and milli bore flow systems. The capillaries are used to separate molecules that are chemically tagged with appropriate fluorescent or chromophore groups.

    Abstract translation: 本发明涉及用于用存在于检测体积中的分子照射一种或多种所选波长的光并将荧光,吸光度,透射率,散射引导到一个或多个检测器上的光源。 与光的分子相互作用允许使用物理或化学标签(最常见的荧光和发色团标记)在反应中鉴定和定量参与的化学部分。 本发明还可以使用光源单独地并且同时用一个或多个选择的波长的光照射多个毛细管或其它流动约束结构,并且分别并且同时检测在毛细管或其它流动限制结构内产生的荧光。 在各种实施方案中,流动限制结构可以允许分子的分离或运输,并且包括毛细管,微孔和毫里流系统。 毛细血管用于分离用适当荧光或发色团组化学标记的分子。

    Constellation-multiplexed transmitter and receiver
    47.
    发明授权
    Constellation-multiplexed transmitter and receiver 有权
    星座多路复用发射机和接收机

    公开(公告)号:US07254167B2

    公开(公告)日:2007-08-07

    申请号:US10045283

    申请日:2001-10-18

    CPC classification number: H04L27/34 H04L1/0003 H04L25/03178 H04L25/03184

    Abstract: A device of dynamic communication of information allows, on the average, non-integer bits per symbol transmission, using a compact code set or a partial response decoding receiver. A stream of selectable predetermined integer bits, e.g., k or k+1 data bits, is grouped into a selectable integer number of bit vectors which then are mapped onto corresponding signal constellations forming transmission symbols. Two or more symbols can be grouped and further encoded, so that a symbol is spread across the two or more symbols being communicated. Sequence estimation using, for example, maximum likelihood techniques, as informed by noise estimates relative to the received signal. Each branch metric in computing the path metric of a considered sequence at the receiver is weighted by the inverse of the noise power. It is desirable that the constellation selection, sequence estimation and noise estimation be performed continuously and dynamically.

    Abstract translation: 使用紧凑代码集或部分响应解码接收器的信息的动态通信装置平均允许每个符号传输的非整数比特。 可选择的预定整数比特流(例如k或k + 1个数据比特)被分组成可选择的整数个比特向量,然后将其映射到形成发送符号的相应的信号星座上。 可以对两个或更多个符号进行分组和进一步编码,使得符号分布在所传送的两个或更多个符号之间。 使用例如最大似然技术的序列估计,通过相对于接收信号的噪声估计来通知。 在接收机处计算所考虑的序列的路径度量的每个分支度量被噪声功率的倒数加权。 期望连续动态地执行星座选择,序列估计和噪声估计。

    Quadrature receiver sampling architecture

    公开(公告)号:US07139332B2

    公开(公告)日:2006-11-21

    申请号:US10184766

    申请日:2002-06-28

    CPC classification number: H04L27/00

    Abstract: Quadrature receiver sampling architecture. A signal ADC performs analog to digital conversion for both I and Q streams. An analog MUX selects the appropriate I and the Q baseband analog input streams for input to the ADC at the appropriate time. A digital filter may also be employed to compensate for any introduced delay between the samples of the I and Q channel when seeking to recover the symbols that have been transmitted to a communication receiver that employs this quadrature receiver architecture and/or signal processing. In one embodiment, if an ADC is clocked at a rate of substantially twice the sample rate of the I and Q channels, there will be a one-half sample clock delay between the digital I and digital Q data at the output of the ADC. This delay is then removed before the demodulator processes the input signals to recover the transmitted symbols.

    Interspersed training among data
    50.
    发明申请
    Interspersed training among data 有权
    数据间穿插训练

    公开(公告)号:US20050184887A1

    公开(公告)日:2005-08-25

    申请号:US11116851

    申请日:2005-04-28

    Abstract: A communications system, having a combination Reed-Solomon encoder and a Turbo-Code encoder Data frame configuration which may be changed to accommodate embedded submarkers of known value are embedded in with the data order to aid synchronization in the receiver system, by providing strings of known symbols. The string of known symbols may be the same as the symbols within a training header that appears at the beginning of a data frame. Frame parameters may be tailored to individual users and may be controlled by information pertaining to receivers, such as bit error rate, of the receiver. Additional headers may be interspersed within the data in order to assist in receiver synchronization. Frames of data may be acquired quickly by a receiver by having a string of symbols representing the phase offset between successive header symbols in the header training sequence in order to determine the carrier offset. Phase lock to a signal may be achieved after determining carrier offset in receivers by correlating successive symbols in successive headers. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

    Abstract translation: 具有组合Reed-Solomon编码器和Turbo-Code编码器数据帧配置的通信系统可以被改变以适应已知值的嵌入式子标记,以数据顺序嵌入以辅助接收机系统中的同步,通过提供串 已知符号。 已知符号串可以与出现在数据帧开始处的训练头中的符号相同。 帧参数可以针对个体用户定制,并且可以由与接收机有关的信息(例如接收机的比特错误率)来控制。 额外的头可以散布在数据内,以帮助接收机同步。 为了确定载波偏移,可以由接收机通过在标题训练序列中的连续首标符号之间具有表示相位偏移的符号串来快速获取数据帧。 在确定接收机中的载波偏移之后可以通过将连续的标题中的连续符号相关来来实现对信号的相位锁定。 要强调的是,该摘要被提供以符合要求摘要的规则,这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是,它不会用于解释或限制权利要求的范围或含义。

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