Patent application number | Description | Published |
20120087449 | METHODS AND APPARATUS FOR SYNCHRONIZATION IN MULTIPLE-CHANNEL COMMUNICATION SYSTEMS - Methods and apparatus for processing multichannel signals in a multichannel receiver are described. In one implementation, a plurality of demodulator circuits may provide a plurality of outputs to a processing module, with the processing module then simultaneously estimating noise characteristics based on the plurality of outputs and generating a common noise estimate based on the plurality of outputs. This common noise estimate may then be provided back the demodulators and used to adjust the demodulation of signals in the plurality of demodulators to improve phase noise performance. | 04-12-2012 |
20130230127 | METHODS AND APPARATUS FOR SYNCHRONIZATION IN MULTIPLE-CHANNEL COMMUNICATION SYSTEMS - Methods and apparatus for processing multichannel signals in a multichannel receiver are described. In one implementation, a plurality of demodulator circuits may provide a plurality of outputs to a processing module, with the processing module then simultaneously estimating noise characteristics based on the plurality of outputs and generating a common noise estimate based on the plurality of outputs. This common noise estimate may then be provided back the demodulators and used to adjust the demodulation of signals in the plurality of demodulators to improve phase noise performance. | 09-05-2013 |
20140348185 | METHOD AND SYSTEM FOR CROSS-PROTOCOL TIME SYNCHRONIZATION - Methods and systems for cross-protocol time synchronization may comprise, for example, in a premises-based network, receiving a signal that conforms to a data over cable service interface specification (DOCSIS) communications protocol. A global time of day (GTOD) clock may be extracted from the received signal. Communication on the premises-based network in accordance with a multimedia over cable alliance (MoCA) communications protocol may be synchronized based at least in part on the extracted GTOD clock. Communication in a third communications protocol may be synchronized, wherein the third communications protocol may include a home phoneline networking alliance (HPNA) standard, an IEEE 802.11x standard, and a non-public wireless network protocol. The extracted GTOD clock may comprise a GPS clock, GLONASS clock, and a Galileo clock. A second signal for extracting a GTOD may be received, such as a satellite signal, and may conform to a low Earth orbit satellite signal protocol. | 11-27-2014 |
20140359674 | METHOD AND SYSTEM FOR PROVIDING A HOME CABLE NETWORK - Methods and systems for cross-protocol time synchronization may comprise, for example, in a premises-based network, receiving, by a root node network controller in the premises, signals that conform to one or more first communications protocols, where the signals may be received from sources external to the premises. The received signals may be bridged to conform to a second communications protocol different from the first communications protocol. The bridged signals may be communicated to one or more networked devices within the premises-based wired network, where only signals conforming to the second communications protocol may be concurrently communicated in at least two frequencies, a first in a frequency range of the first communications protocol and a second in a frequency range of the second communications protocol, the frequency range used by the first communications protocol being different from and not overlapping with the frequency range used by the second communications protocol. | 12-04-2014 |
20150113574 | METHOD AND SYSTEM FOR PROVIDING A HOME CABLE NETWORK - Methods and systems for cross-protocol time synchronization may comprise, for example, in a premises-based network, receiving, by a root node network controller in the premises, signals that conform to one or more first communications protocols. The received signals may be bridged to conform to a second communications protocol different from the first communications protocol, and the bridged signals may be communicated to networked devices within the network, where only signals conforming to the second communications protocol may be concurrently communicated over the network in a frequency range of the first communications protocol and in a frequency range of the second communications protocol, the frequency range used by the first communications protocol being different from and not overlapping with the frequency range used by the second communications protocol. The first communications protocol signals may comprise data over cable service interface specification (DOCSIS) signals, cable, and/or or satellite television signals. | 04-23-2015 |
20150194932 | METHOD AND SYSTEM FOR CREST FACTOR REDUCTION - Methods and systems for crest factor reduction may comprise generating an original waveform, generating a distortion signal by reducing a crest factor of the original waveform, generating an error signal by subtracting out the original waveform from the distortion signal, generating a conditioned waveform by adding the error signal to the original waveform, and amplifying the conditioned waveform. The crest factor of the original waveform may be reduced based on spectral mask requirements. The crest factor of the original waveform may be reduced using a limiter. The power amplifier may comprise a programmable gain amplifier (PGA). The distortion signal may be generated based on a PGA model and/or a predistortion model. A signal from an output of the PA may be fed back to the PGA model. The PGA model may be dynamically configured. The crest factor of the original waveform may be reduced in an analog domain and/or a digital domain. The error signal may be filtered utilizing a distortion shaping filter. | 07-09-2015 |
20150341676 | Method And System For Providing A Home Cable Network - Methods and systems for cross-protocol time synchronization may comprise, for example, in a premises-based network, receiving, by a network controller in the premises, signals that conform to a first communications protocol. The received signals may be bridged to conform to a second communications protocol different from the first communications protocol, and the bridged signals may be communicated to networked devices within the network, where only signals conforming to the second communications protocol may be concurrently communicated over the network in a frequency range of the first communications protocol and in a frequency range of the second communications protocol, the frequency range used by the first communications protocol not overlapping with the frequency range used by the second communications protocol. The first communications protocol signals may comprise data over cable service interface specification (DOCSIS) signals, cable, and/or or satellite television signals. | 11-26-2015 |
20160065404 | METHOD AND SYSTEM FOR I/Q MISMATCH CALIBRATION AND COMPENSATION FOR WIDEBAND COMMUNICATION RECEIVERS - Methods and systems for I/O mismatch calibration and compensation for wideband communication receivers may include receiving a radio frequency (RF) signal in a receiver of a communication device, down-sampling said received RF signal to generate a channel k and its image channel −k at baseband frequencies, determining average in-phase (I) and quadrature (Q) gain and phase mismatch of said channel k and said image channel −k, removing said average I and Q gain and phase mismatch of said channel k and said image channel −k, determining, after said removing said average I and Q gain and phase mismatch, a residual phase tilt of said channel k and said image channel −k, and compensating for said determined residual phase tilt of said channel k and said image channel −k utilizing a phase tilt correction filter. | 03-03-2016 |
20160072600 | Method And System For Interference Avoidance In A Multi-Protocol Communication System - Methods and systems for interference avoidance in a multi-protocol communication system may comprise receiving signals in a first communications protocol in a first frequency range and preventing interference signals from being generated in said first frequency range by configuring channel usage in a second communications protocol in a second frequency range based on said received signals. The configuring channel usage may include avoiding communicating in taboo channels and the received signals in said first communications protocol and signals in said configured channels in said second communications protocol may be communicated over one or more coaxial cables based on the configured channel usage. The taboo channels may be selected based on said received signals such that interference signals from said second frequency range do not occur in said first frequency range. The first frequency range comprises a cable or satellite television frequency range, or data over cable service interface standard (DOCSIS). | 03-10-2016 |