Methods, apparatus, and systems for preventing false packet acceptance in high-speed links. Under one aspect, correctable symbol errors are detected, and determination is made to whether a symbol error rate or ratio (SER) exceeds an SER threshold. In response to detection of such a condition, the link is disconnected or temporarily paused. The value for the SER threshold is determined using a statistical analysis of various link parameters to meet desired performance levels, such as a mean time to false packet acceptance (MTTFPA) of >approximately 15 billion years while providing a mean time to disconnect of >100 years.

A multiple-input multiple output (MIMO) wireless receiver is provided to detect data in MIMO streams received via a multi-antenna system. A filter based detector performs a first pass at decoding codewords in a MIMO bitstream, and then a parity check is performed to determine that the codewords were decoded correctly. If one or more codewords are decoded correctly, those codewords can be used as a candidate codeword and used to generate a bit log likelihood ratio as an input for a second MIMO detector pass which uses a list based MIMO detector. The first pass with a high speed, simple detector facilitates decreasing the list size for the second, optimum list based detector which helps improve overall throughput.

Upon detection of a trigger, such as the exceeding of an error threshold or the direction of a user, a diagnostic link system enters a diagnostic information transmission mode. This diagnostic information transmission mode allows for two modems to exchange diagnostic and/or test information that may not otherwise be exchangeable during normal communication. The diagnostic information transmission mode is initiated by transmitting an initiate diagnostic link mode message to a receiving modem accompanied by a cyclic redundancy check (CRC). The receiving modem determines, based on the CRC, if a robust communications channel is present. If a robust communications channel is present, the two modems can initiate exchange of the diagnostic and/or test information. Otherwise, the transmission power of the transmitting modem is increased and the initiate diagnostic link mode message re-transmitted to the receiving modem until the CRC is determined to be correct.

A multiple-input multiple output (MIMO) wireless receiver is provided to detect data in MIMO streams received via a multi-antenna system. A filter based detector performs a first pass at decoding codewords in a MIMO bitstream, and then a parity check is performed to determine that the codewords were decoded correctly. If one or more codewords are decoded correctly, those codewords can be used as a candidate codeword and used to generate a bit log likelihood ratio as an input for a second MIMO detector pass which uses a list based MIMO detector. The first pass with a high speed, simple detector facilitates decreasing the list size for the second, optimum list based detector which helps improve overall throughput.

A method includes moving one or more transmit facility or transmit facilities attached to a first component with regard to at least two receive facilities attached at a fixed position to the second component; and at least one of registering a respective error if an error condition exists for the respective receive facility or modifying an operation of an apparatus comprising the first and a second component if the error condition exists for the respective receive facility, the error condition for the respective receive facility depends on location information relating to at least one of the position of the first component with regard to the second component or orientation of the first component with regard to the second component, and/or at least one of a measure for a receive quality of the signals or data packets received from the transmit facility or from at least one of the transmit facilities.

In a data processing network, error detection information (EDI) is generated for first data of a first communication protocol of a plurality of communication protocols, the EDI including an error detection code and an associated validity indicator for each field group in a set of field groups. The first data and the EDI are sent through a network interconnect circuit, where the first data is translated to second data of a second communication protocol. An error is detected in the second data received from the network interconnect circuit when a validity indicator for a field group is set in EDI received with the second data and an error detection code generated for second data in the field group does not match the error detection code associated with the field group in the received EDI.

In a data processing network, error detection information (EDI) is generated for first data of a first communication protocol of a plurality of communication protocols, the EDI including an error detection code and an associated validity indicator for each field group in a set of field groups. The first data and the EDI are sent through a network interconnect circuit, where the first data is translated to second data of a second communication protocol. An error is detected in the second data received from the network interconnect circuit when a validity indicator for a field group is set in EDI received with the second data and an error detection code generated for second data in the field group does not match the error detection code associated with the field group in the received EDI.

Systems and methods are provided for categorizing signals sensed from receivers into one of a plurality of categories using a machine learning component that obfuscates other characteristics of the signals beyond the categorization of the signal. A set of training signals is generated that includes signals representative of each of a plurality of categories of signals. A machine learning component is trained using the set of training signals so that the machine learning technique can categorize new signals into one of the plurality of categories. The machine learning component is transmitted to one or more receivers so that each receiver can categorize sensed signals into one of the plurality of categories using the machine learning component while obfuscating other characteristics of the sensed signals.

A method for a compliance test on a communication node, performed in a gateway constituting a vehicle network of a vehicle, may include: receiving a test mode request signal for the compliance test on the communication node; transmitting the test mode request signal to the communication node on which the compliance test is performed; receiving an output signal according to the test mode request signal from the communication node; and transmitting the received output signal to a fixture connected to a test apparatus which performs the compliance test on the communication node.

A wireless relay device that performs relay of encrypted data over a wireless network, the wireless relay device, includes: a determiner that determines whether or not there is an abnormality using first data which is transmitted to its own device from wireless devices belonging to a preset section among wireless devices joining the wireless network; a transmission controller that transmits second data indicating a result of the determination of the determiner to a preset transmission destination; and an encryption processor that decrypts the first data and encrypts the second data transmitted by the transmission controller.