Broadband network for coaxial cable using multi-carrier modulation
    6.
    发明授权
    Broadband network for coaxial cable using multi-carrier modulation 有权
    宽带网同轴电缆采用多载波调制

    公开(公告)号:US07573822B1

    公开(公告)日:2009-08-11

    申请号:US11938770

    申请日:2007-11-12

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

    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。

    Broadband network for coaxial cable using multi-carrier modulation
    8.
    发明授权
    Broadband network for coaxial cable using multi-carrier modulation 有权
    宽带网同轴电缆采用多载波调制

    公开(公告)号:US07295518B1

    公开(公告)日:2007-11-13

    申请号:US10322834

    申请日:2002-12-18

    IPC分类号: H04L12/26 H04N7/173

    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从其他终端设备接收路径。 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。