Entropic Communications, Inc.

Texas Instruments Corporation

Other

3com Corporation

Arndt Mueller

Michail Konstantinos Tsatsanis

Na Chen

David Barr

Joseph Binamira Soriaga

Karthik Ramasubramanian

Itzhak Gurantz

Donald Brian Eidson

Shaw Yuan

Markos Troulis

Karl E Fitzke

Ronald B Lee

Mark James O'Leary

Changwen Liu

John Crawford LeVieux

Brian Eidson

Bruce L Trumbo

Rashad Barghouti

Farokh Parchekani

John Jay Kaufman

A particular overall architecture for transmission over a bonded channel system consisting of two interconnected MoCA (Multimedia over Coax Alliance) 2.0 SoCs (Systems on a Chip) and a method and apparatus for the case of a 'bonded' channel network. With a bonded channel network, the data is divided into two segments, the first of which is transported over a primary channel and the second of which is transported over a secondary channel.

Method and apparatus for LDPC transmission over a channel bonded link

Various systems and methods are provided for channel estimation. These systems and methods (a) determine a coherence bandwidth for the channel, (b) adapt the channel estimation based on the coherence bandwidth, and (c) perform channel estimation by transmitting a channel estimation symbol over a channel. In some embodiments, the channel estimation is adapted based on the coherence bandwidth. This may include selecting a number of channel estimation symbols to transmit in a packet. Additionally, the number of channel estimation symbols transmitted in a packet can be selected by increasing the number of channel estimation symbols when the coherence bandwidth of the channel is high or decreasing the number of channel estimation symbols when the coherence bandwidth of the channel is low.

Systems and methods for determining the number of channel estimation symbols based on the channel coherence bandwidth

Systems and methods for determining the number  of channel estimation symbols based on the channel coherence bandwidth

Various systems and methods for probing a communication channel. These systems and methods transmit an error vector probe packet from a first transmitter while a second transmitter is active and transmitting. A network device may receive the error vector probe packet and measure an error vector magnitude based on the received error vector probe packet. Using the error vector magnitude, the network device estimates channel characteristics such as signal-to-noise ratio, data capacity, etc. The transmission can occur when more than one transmitter is active and transmitting. At least some of the other transmitters are active and transmit an analog zero signal, e.g., all digital zeros on the input to the digital-to-analog converter of a network device when an error vector probe packet is transmitted.

Systems and methods for probing wired communication

A method comprises receiving a predetermined length of information, the information including a first MAC Protocol Data Unit (MPDU) being of variable length and including at least one Sub-MPDU; independently decoding the first Sub-MPDU and a plurality of additional portions of the received information, each portion having a length equal to the length of one Sub-MPDU; processing data from the first Sub-MPDU; and determining from the processed data how many of the other decoded portions constitute Sub-MPDUs of the received MPDU.

Method for quick map recovery in case of error in MoCA

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, LS, LS, LS, LS, LS, LS, LS, LS, CP, CE, CE. The Admission Preamble includes the following symbols SS, SS, SS, SS, SS, SS, SS, SS, SS, SS, SS, SS, LS, LS, LS, LS, LS, LS, LS, LS, CP, CE, CE. The Broadcast Preamble includes the following symbols LS, LS, LS, LS, CP, CE, CE. The high-throughput preamble includes the following symbols CP, CE. The SS symbol includes 64 bits, the LS, LS, and CPsymbols include 192 bits, the CE symbol includes 512 bits, and the CEsymbol is a subset of CE.

High-efficiency preambles for communications systems over pseudo-stationary communication channels

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San Diego, CA, United States of America

Arndt Mueller