摘要:
A method and apparatus for measuring and tracking Impulse Noise parameters in a communication system are described. The method includes estimating one or more parameters of the impulse noise, the parameters including a period, an offset and duration of the impulse noise.
摘要:
A transceiver system is disclosed. The transceiver system comprises a first transceiver physical layer circuit (PHY) having a first plurality of channels and a second transceiver PHY disposed adjacent the first transceiver PHY and having a second plurality of channels. Filter circuitry is coupled between at least one of the plurality of first channels and at least one of the plurality of second channels.
摘要:
Various methods and apparatus are described that use a filter. A receiver may be configured to receive multi-tone signals. The receiver has a Time Domain Equalizer filter employing an algorithm to shorten a length of an incoming impulse response to equal to or less than a guard period by calculating a minimum mean square error solution in combination with measuring an inter-symbol interference of a channel.
摘要:
Low-power idle mode for network transceivers. In one aspect, a method for reducing power consumption of a transceiver connected to a communication network includes entering a low-power idle mode, and in this mode, repeatedly turning off a transmitter of the transceiver and turning on the transmitter according to a pattern, where the pattern has been customized based on characteristics of the receiver. Turning off the transmitter conserves power consumed by the transceiver.
摘要:
Compensation of transmit baseline wander in data transmission on a network. In one aspect, compensating for baseline wander includes receiving a signal to be transmitted by a transmitter, where the transmitter is operable with a higher-speed transmission standard requiring magnetics a first open circuit inductance. The signal is processed to compensate for a transmit baseline wander in the signal, the transmit baseline wander associated with a lower-speed transmission standard that requires magnetics with a second open circuit inductance that is higher than the first open circuit inductance. The processed signal is to be provided for transmission on a twisted pair cable of the network.
摘要:
A method and apparatus for providing synchronization data on demand are described. The method includes sending one or more synchronization parameters from a receiver to a transmitter in a data communication system, and adjusting transmission of synchronization data from a transmitter to a receiver using the one or more parameters sent by the receiver.
摘要:
A method, system and apparatus for reliable multicarrier communication in the presence of timing phase error is disclosed. Phase noise due to a sampling-time phase mismatch between a transmitter device and a receiver device is measured in a signal. A Gaussian noise power level in the signal is determined, and a gain factor associated with the phase noise is calculated. The gain factor is applied to the Gaussian noise power level to calculate an equivalent noise power. In one aspect, the equivalent noise power is used to determine a signal-to-noise ratio. In another aspect, the signal is a multicarrier signal including a plurality of sub-carriers.
摘要:
In general, various methods and apparatus are described that use a multi-tone receiver. The multi-tone receiver detects data in a multiple tone signal. The receiver has a detector module to measure a noise power level present in the system and to detect for an asymmetric Gaussian noise source in the background noise. An equivalent noise power is obtained by applying a compensating gain factor to the asymmetrical noise source. The gain factor is used when the detector indicates that the asymmetric Gaussian noise source exists in the background noise. Any bit-loading algorithm that is based on a symmetric Guassian noise source assumption can also be used with asymmetrical Guassian noise sources if this gain factor is applied.
摘要:
An apparatus and method of compensating for radio frequency interference (RFI) if present in a tone in a multiple tone system to derive an equivalent noise power that can be used in bit-loading to achieve a better bit rate.
摘要:
A method, system and apparatus for reliable multicarrier communication in the presence of periodic impulsive interference is disclosed. A power level of noise in a signal is determined. An impulse noise in the signal is detected. A gain factor associated with the impulse noise is determined and applied to the noise power of the signal to calculate an equivalent noise power. In one aspect, the equivalent noise power is used to determine a signal-noise-ratio.