公开(公告)号：US20100094995A1

公开(公告)日：2010-04-15

申请号：US12579312

申请日：2009-10-14

申请人： David BARR

发明人： David BARR

IPC分类号： G06F15/173

CPC分类号： H04L43/06 ,  H04L12/282 ,  H04L43/12

摘要： A system, device and process to enable a “silent probe” on a network to facilitate network analysis by nodes within a network. A network node requests the silent probe. During the silent probe, all nodes remain silent so that all nodes can listen, hear, and/or analyze the spectrum of the communications medium.

摘要翻译： 在网络上启用“静默探测”的系统，设备和过程，以便于网络中的节点的网络分析。 网络节点请求无声探测。 在静音探测期间，所有节点都保持静音，以便所有节点都可以收听，分析和/或分析通信媒体的频谱。

公开(公告)号：US20100061403A1

公开(公告)日：2010-03-11

申请号：US12557288

申请日：2009-09-10

申请人： Arndt MUELLER

发明人： Arndt MUELLER

IPC分类号： H04L29/02 ,  H04L27/18

CPC分类号： H04L12/2801 ,  H04L25/0226 ,  H04L27/2613 ,  H04L27/2662

摘要： A method includes appending a preamble to a data packet and transmitting the preamble and data packet over a communication channel in the network. The preamble may be a Beacon, Admission, Broadcast, or High-Throughput Preamble. The Beacon Preamble includes the following symbols SS, SS, SS, SS, SS, SS, SS, SS, SS, SS, SS, SS, LS1, LS1, LS1, LS1, LS1, LS1, LS1, LS1, CP0, CEBeacon, CEBeacon. The Admission Preamble includes the following symbols SS, SS, SS, SS, SS, SS, SS, SS, SS, SS, SS, SS, LS1, LS1, LS1, LS1, LS1, LS1, LS1, LS1, CP0, CE, CE. The Broadcast Preamble includes the following symbols LS1, LS1, LS1, LS1, CP0, CE, CE. The high-throughput preamble includes the following symbols CP0, CE. The SS symbol includes 64 bits, the LS1, LS2, and CP0 symbols include 192 bits, the CE symbol includes 512 bits, and the CEBeacon symbol is a subset of CE.

摘要翻译： 一种方法包括将前导码附加到数据分组，并通过网络中的通信信道发送前同步码和数据分组。 前导码可以是信标，接收，广播或高吞吐量前缀。 信标前导码包括以下符号SS，SS，SS，SS，SS，SS，SS，SS，SS，SS，SS，SS，LS1，LS1，LS1，LS1，LS1，LS1，LS1，LS1，CP0，CEBeacon ，CEBeacon。 入场前导码包括以下符号SS，SS，SS，SS，SS，SS，SS，SS，SS，SS，SS，SS，LS1，LS1，LS1，LS1，LS1，LS1，LS1，LS1，CP0，CE ，CE。 广播前导码包括以下符号LS1，LS1，LS1，LS1，CP0，CE，CE。 高吞吐量前置码包括以下符号CP0，CE。 SS符号包括64位，LS1，LS2和CP0符号包括192位，CE符号包括512位，CEBeacon符号是CE的子集。

公开(公告)号：US20090296611A1

公开(公告)日：2009-12-03

申请号：US12538339

申请日：2009-08-10

申请人： Anton MONK ,  Brett BERNATH ,  Itzhak GURANTZ ,  Ladd EL WARDANI ,  Ron PORAT

发明人： Anton MONK ,  Brett BERNATH ,  Itzhak GURANTZ ,  Ladd EL WARDANI ,  Ron PORAT

IPC分类号： H04J3/00 ,  H04B7/212

CPC分类号： H04L5/0046 ,  H04L1/0003 ,  H04L5/0007 ,  H04L5/1438 ,  H04L25/0226 ,  H04L27/0006 ,  H04N7/104

摘要： A broadband local area data network uses coaxial cable wiring for interconnection of terminal devices. Orthogonal frequency division multiplexing (OFDM) with bit loading is used to overcome channel impairments and provide a path for terminal devices to transmit to and receive from other terminal devices. Probe messages are sent between devices to characterize the communication channel and determine optimum bit loading. The data network shares the cable spectrum with other services and uses frequency bands not used by other services. Adaptive power control can be used to maintain signal to noise ratio in a communication between terminal devices. Frequency coordination can be used to avoid interference between the LAN communications and other services transmitted on the cable.

摘要翻译： 宽带局域网数据网络使用同轴电缆布线来连接终端设备。 使用具有比特加载的正交频分复用（OFDM）来克服信道损伤，并为终端设备发送和接收其他终端设备提供路径。 在设备之间发送探测消息以表征通信信道，并确定最佳位加载。 数据网络与其他业务共享电缆频谱，并使用其他业务未使用的频段。 自适应功率控制可用于在终端设备之间的通信中保持信噪比。 可以使用频率协调来避免LAN通信与电缆上传输的其他业务之间的干扰。

公开(公告)号：US07613234B2

公开(公告)日：2009-11-03

申请号：US12080815

申请日：2008-04-04

申请人： Sreen A. Raghavan ,  Thulasinath G. Manickam ,  Peter J. Sallaway ,  Gerard E. Taylor

发明人： Sreen A. Raghavan ,  Thulasinath G. Manickam ,  Peter J. Sallaway ,  Gerard E. Taylor

IPC分类号： H04B1/38 ,  H04L27/28

CPC分类号： H04L5/08 ,  H04B3/20 ,  H04B3/32

摘要： A transceiver according to the present invention receives data from a plurality of frequency separated transmission channels from a complementary transmitter and includes an interference filter for correcting for interference from transmitters other than the complementary transmitter. The interference filter, for example, can correct for near-end cross-talk and echo interference filtering and/or far-end crosstalk interference filtering is presented. A transceiver can include a transmitter portion and a receiver portion with one or more receivers coupled to receives signals in the plurality of frequency separated transmission channels. A baseband transmitter can be combined with one or more transmitters that transmit data into one of the frequency separated transmission bands. Any combination of modulation systems can be utilized (e.g. PAM for the baseband and QAM for the frequency separated bands). In some embodiments, one baseband PAM transmitter is combined with one or more frequency separated QAM transmitters.

摘要翻译： 根据本发明的收发器从互补发射机接收来自多个频率分离的传输信道的数据，并且包括用于校正来自除了互补发射机之外的发射机的干扰的干扰滤波器。 例如，干扰滤波器可以校正近端串扰和回波干扰滤波和/或远端串扰干扰滤波。 收发机可以包括发射机部分和接收机部分，其中一个或多个接收机被耦合以接收多个频率分离的传输信道中的信号。 基带发射机可以与将数据发射到频率分离的传输频带之一的一个或多个发射机组合。 可以利用调制系统的任何组合（例如用于基带的PAM和频率分离频带的QAM）。 在一些实施例中，一个基带PAM发射机与一个或多个频率分离的QAM发射机组合。

公开(公告)号：US07573822B1

公开(公告)日：2009-08-11

申请号：US11938770

申请日：2007-11-12

申请人： Anton Monk ,  Brett Bernath ,  Itzhak Gurantz ,  Ladd El Wardani ,  Ron Porat

发明人： Anton Monk ,  Brett Bernath ,  Itzhak Gurantz ,  Ladd El Wardani ,  Ron Porat

IPC分类号： G06F11/00 ,  H04J11/00 ,  H04L27/28

CPC分类号： H04L5/0046 ,  H04L1/0003 ,  H04L5/0007 ,  H04L5/1438 ,  H04L25/0226 ,  H04L27/0006 ,  H04N7/104

摘要： A broadband local area data network uses coaxial cable wiring for interconnection of terminal devices. Orthogonal frequency division multiplexing (OFDM) with bit loading is used to overcome channel impairments and provide a path for terminal devices to transmit to and receive from other terminal devices. Probe messages are sent between devices to characterize the communication channel and determine optimum bit loading. The data network shares the cable spectrum with other services and uses frequency bands not used by other services. Adaptive power control can be used to maintain signal to noise ratio in a communication between terminal devices. Frequency coordination can be used to avoid interference between the LAN communications and other services transmitted on the cable.

摘要翻译： 宽带局域网数据网络使用同轴电缆布线来连接终端设备。 使用具有比特加载的正交频分复用（OFDM）来克服信道损伤，并为终端设备发送和接收其他终端设备提供路径。 在设备之间发送探测消息以表征通信信道，并确定最佳位加载。 数据网络与其他业务共享电缆频谱，并使用其他业务未使用的频段。 自适应功率控制可用于在终端设备之间的通信中保持信噪比。 可以使用频率协调来避免LAN通信与电缆上传输的其他业务之间的干扰。

公开(公告)号：US07522875B1

公开(公告)日：2009-04-21

申请号：US11027999

申请日：2004-12-31

申请人： Itzhak Gurantz ,  Ladd El Wardani ,  Michael Landry

发明人： Itzhak Gurantz ,  Ladd El Wardani ,  Michael Landry

IPC分类号： H04H1/00

CPC分类号： H04H40/90

摘要： In a satellite receiving system, program channels are selected from one or more broadband signals and combined with other selected channels and transmitted from a first unit, for example an outdoor unit, to a second unit, for example a gateway, server, or set-top box, using a single cable. Channels can be selected by digitizing the broadband signal then digitally filtering to isolate the desired channels. The outputs of several LNBs can be selected and combined into one signal. Multiple set-top boxes can receive independent signals over a single cable from the outdoor unit.

摘要翻译： 在卫星接收系统中，从一个或多个宽带信号中选择节目频道，并与其它所选择的频道组合，并从第一单元（例如室外单元）发送到第二单元，例如网关，服务器或机顶盒， 顶盒，使用单根电缆。 可以通过数字化宽带信号然后进行数字滤波来选择信道以隔离所需的信道。 可以选择多个LNB的输出并将其组合成一个信号。 多台机顶盒可以通过室外机的单根电缆接收独立的信号。

公开(公告)号：US07499397B1

公开(公告)日：2009-03-03

申请号：US11938283

申请日：2007-11-11

申请人： Anton Monk ,  Brett Bernath ,  Itzhak Gurantz ,  Ladd El Wardani ,  Ron Porat

发明人： Anton Monk ,  Brett Bernath ,  Itzhak Gurantz ,  Ladd El Wardani ,  Ron Porat

IPC分类号： G06F11/00 ,  H04L5/16

CPC分类号： H04L5/0046 ,  H04L1/0003 ,  H04L5/0007 ,  H04L5/1438 ,  H04L25/0226 ,  H04L27/0006 ,  H04N7/104

摘要： A broadband local area data network uses coaxial cable wiring for interconnection of terminal devices. Orthogonal frequency division multiplexing (OFDM) with bit loading is used to overcome channel impairments and provide a path for terminal devices to transmit to and receive from other terminal devices. Probe messages are sent between devices to characterize the communication channel and determine optimum bit loading. The data network shares the cable spectrum with other services and uses frequency bands not used by other services. Adaptive power control can be used to maintain signal to noise ratio in a communication between terminal devices. Frequency coordination can be used to avoid interference between the LAN communications and other services transmitted on the cable.

公开(公告)号：US20090022252A1

公开(公告)日：2009-01-22

申请号：US12173685

申请日：2008-07-15

申请人： Wee Peng Goh ,  Jason Beck ,  Raja Gosula

发明人： Wee Peng Goh ,  Jason Beck ,  Raja Gosula

IPC分类号： H04L27/06

CPC分类号： H04L25/0212 ,  H04L27/2647

摘要： An efficient algorithm is described for use with OFDM receivers that characterizes the impulse response of a communication channel using frequency domain techniques that reduce computational and memory requirements, relative to time-domain cross-correlation methods, without sacrificing algorithm performance. An FFT engine is used to transform a time domain input sequence, the transformed sequence is multiplied by the conjugate of the expected sequence, the product of several sequences is averaged, then the FFT engine transforms the average back to a time domain sequence, the magnitude of which is the impulse response of the channel.

摘要翻译： 描述了一种有效的算法，用于使用频域技术来表征通信信道的脉冲响应的OFDM接收机，其相对于时域互相关方法，相对于时域互相关方法降低计算和存储器需求，而不牺牲算法性能。 FFT引擎用于对时域输入序列进行变换，将变换后的序列与预期序列的共轭相乘，将几个序列的乘积进行平均，然后FFT引擎将平均值转换为时域序列， 其中是频道的脉冲响应。

公开(公告)号：US20090003245A1

公开(公告)日：2009-01-01

申请号：US12206465

申请日：2008-09-08

申请人： Zong Liang Wu ,  Ronald Lee ,  Yusuf Ozturk

发明人： Zong Liang Wu ,  Ronald Lee ,  Yusuf Ozturk

IPC分类号： H04L12/28

CPC分类号： H04L12/40078 ,  H04L12/40091

摘要： Several local IEEE1394 buses are bridged together over a second bus type to create a global bus wherein each local bus node is able to address nodes across the global bus without the local nodes being aware of the bridging operation. A bridging device operates by translating local bus node addresses to a global bus for communication over the second bus type. Alternatively, the local bus node identification process is controlled by the bridging device operating as the root node to cause the local nodes to be identified with a node address that is unique for the global network. The second bus type operates as a backbone for the global network and can be any type of communication bus or network with capability to transport the local bus traffic. The bridging devices that interface the local IEEE1394 buses to the backbone contain portals specific to each bus type that can communicate data between the dissimilar buses.

摘要翻译： 多个本地IEEE1394总线通过第二总线类型桥接在一起以创建全局总线，其中每个局部总线节点能够对全局总线上的节点进行寻址，而本地节点不知道桥接操作。 桥接设备通过将本地总线节点地址转换为全局总线来进行工作，以便在第二总线类型上进行通信。 或者，本地总线节点识别过程由作为根节点操作的桥接设备来控制，以使得本地节点被识别为对于全局网络是唯一的节点地址。 第二总线类型作为全球网络的骨干，可以是具有传输本地总线业务能力的任何类型的通信总线或网络。 将本地IEEE1394总线连接到骨干网的桥接设备包含特定于每种总线类型的门户，可以在不同总线之间传输数据。

公开(公告)号：US20080285634A1

公开(公告)日：2008-11-20

申请号：US12080815

申请日：2008-04-04

申请人： Sreen A. Raghavan ,  Thulasinath G. Manickam ,  Peter J. Sallaway ,  Gerard E. Taylor

发明人： Sreen A. Raghavan ,  Thulasinath G. Manickam ,  Peter J. Sallaway ,  Gerard E. Taylor

IPC分类号： H04B1/38

CPC分类号： H04L5/08 ,  H04B3/20 ,  H04B3/32

摘要： A transceiver according to the present invention receives data from a plurality of frequency separated transmission channels from a complementary transmitter and includes an interference filter for correcting for interference from transmitters other than the complementary transmitter. The interference filter, for example, can correct for near-end cross-talk and echo interference filtering and/or far-end crosstalk interference filtering is presented. A transceiver can include a transmitter portion and a receiver portion with one or more receivers coupled to receives signals in the plurality of frequency separated transmission channels. A baseband transmitter can be combined with one or more transmitters that transmit data into one of the frequency separated transmission bands. Any combination of modulation systems can be utilized (e.g. PAM for the baseband and QAM for the frequency separated bands). In some embodiments, one baseband PAM transmitter is combined with one or more frequency separated QAM transmitters.

摘要翻译： 根据本发明的收发器从互补发射机接收来自多个频率分离的传输信道的数据，并且包括用于校正来自除了互补发射机之外的发射机的干扰的干扰滤波器。 例如，干扰滤波器可以校正近端串扰和回波干扰滤波和/或远端串扰干扰滤波。 收发机可以包括发射机部分和接收机部分，其中一个或多个接收机被耦合以接收多个频率分离的传输信道中的信号。 基带发射机可以与将数据发射到频率分离的传输频带之一的一个或多个发射机组合。 可以利用调制系统的任何组合（例如用于基带的PAM和用于频率分离频带的QAM）。 在一些实施例中，一个基带PAM发射机与一个或多个频率分离的QAM发射机组合。