摘要:
Forward error correction (FEC) m-bit symbol modulation. Any desired FEC, error correction code (ECC), and/or combination thereof generates coded bits for combination with either uncoded bits, separately generated coded bits, and/or combination thereof to generate a number of symbols that undergo mapping to a constellation whose respective constellation points have a mapping characterized by a maximum minimum intra-Euclidean distance between the respective constellation points thereby generating a sequence of discrete-valued modulation symbols. The sequence of discrete-valued modulation symbols may then undergo modulation of any of a number of different operations (e.g., digital to analog conversion [e.g., digital to analog converter (DAC)], scaling, frequency shifting, filtering, etc.) to generate a continuous time signal for transmission via a communication channel. Such a device operative to perform including such functionality, circuitry, capability, etc., may be implemented to be operative within any desired communication system (e.g., satellite, wireless, wired, fiber-optic, and/or combination thereof, etc.).
摘要:
A demarcation point unit connected between a home network backbone and an external network. The demarcation point unit includes a blocking filter and splitter. The blocking filter receives a home network signal from the home network backbone and an external signal from the external network. The blocking filter separates the home network signal from the external signal, and returns the home network signal back to the home network backbone. The splitter has an input and at least two outputs. The input of the splitter receives the home network signal from the blocking filter.
摘要:
Systems and methods for policing a Quality of Service (QoS) flow in a MoCA network are provided. The network may include a sending node, a receiving node and a network controller. The network controller may allocate a QoS flow between the sending node and the receiving node. The sending node may request bandwidth for the QoS flow from the network controller. QoS requests have a higher priority than some other requests and may swamp the network. The sending node therefore polices its use of the network. First, the sending node computes a policing time period Tpp. Next the sending node computes a packet and bit allocation for the use of the network during a Tpp. Last the sending node sends reservation requests to the network controller when the allocation of packet or bits has not been exceeded. If any allocation has been exceeded the sending node reserves bandwidth via opportunistic reservation requests which have a lower priority than some other requests.
摘要:
Systems and methods for providing a high throughput mode for a MoCA device are provided. An electronic device configured for use as a node in a home network is provided. The electronic device may include a preamble generator block. The preamble generator block may include a time domain preamble generator. The time domain preamble generator may be configured to generate a periodic preamble for a MoCA signal. The preamble generator block may also include a doubling circuit configured to double the periodic preamble. Such doubling may preferably obtain an increased maximum periodic preamble.
摘要:
LDPC codes robust to non-stationary narrowband ingress noise. Particularly designed LDPC codes are adapted to address deleterious noise-effects incurred within LDPC coded signals that propagate via a communication channel (such as from a transmitting communication device to a receiving communication device). Such LDPC matrices employed for encoding and/or decoding such LDPC coded signals are composed of sub-matrices (e.g., all-zero values sub-matrices and/or CSI (Cyclic Shifted Identity) sub-matrices). The sub-matrices are generally uniform in size and square in shape. Based on certain operational conditions, such as communication channel noise, various operations within a communication device are adaptively modified (e.g., signaling, modulation, demodulation, symbol mapping, metric generation, decoding, etc.). Various types of signaling may be employed for such LDPC coded signals including orthogonal frequency division multiplexing (OFDM) signaling, which may include employing symbols of different size therein (e.g., symbols with x and y bits, respectively, with x and y being integers).
摘要:
A method for assessing channel performance in a home communication network is provided. The home communication network is operable over a plurality of channels. The home communication network includes a network controller and a plurality of nodes. Each of the network controller and the plurality of nodes is in communication over a coax backbone. The method preferably includes selecting a channel for assessment and allocating a first probe operation for use with the plurality of nodes. The method may also include, in response to the allocating, sending a first probe operation report message from each of the plurality of nodes to the network controller. In response to receiving the first probe operation report messages, the method may further include using the network controller to select a node to be a channel assessment operation node. In addition, the method may include selecting at least a portion of the plurality of nodes to participate in a channel assessment operation signal exchange. The method may also include moving the selected nodes to a different channel to perform a channel assessment operation on the different channel and using the channel assessment operation node to allocate a second probe operation on each of the selected nodes.
摘要:
A system for serving an individual node in a shared communication network having a MAC layer and a PHY layer, the system being operative to interface between the MAC layer and the PHY layer. The system may include a first physical channel transferring at least one packet between the layers, a second physical channel transferring at least one burst parameter between the layers, and a third physical channel transferring at least one timing signal, for a burst characterized by the at least one burst parameter and comprising the at least one packet, between the layers.
摘要:
A home network, in one embodiment including a home wiring system; a demarcation point unit in electrical communication with the home wiring system; and a home network module in electrical communication with the home wiring system. The home network module is adapted for connection to a home electronic device. The demarcation point unit passes data to and receives data from the home electronic device through the home network module.
摘要:
Disclosed are various embodiments for power management in hybrid networks. In one embodiment, a network power manager is configured to manage power consumption in a hybrid network by controlling an operational state of a plurality of ports in a plurality of nodes of the hybrid network. The hybrid network comprises a plurality of interconnected networks, where each interconnected network employs a corresponding one of a plurality of communication mediums, and each of the communication mediums is unique with respect to each other.
摘要:
A home network, in one embodiment including a home wiring system; a demarcation point unit in electrical communication with the home wiring system; and a home network module in electrical communication with the home wiring system. The home network module is adapted for connection to a home electronic device. The demarcation point unit passes data to and receives data from the home electronic device through the home network module.