Techniques that provide link auto-negotiation between a radio equipment controller (REC) and a radio equipment (RE) are described herein. In one embodiment, a method includes performing, by a proxy master, a Common Public Radio Interface (CPRI) Layer 1 (L1) link auto-negotiation with a RE to achieve a L1 synchronization between the proxy master and the RE at a link bit rate; communicating the link bit rate from the proxy master to a proxy slave; performing, by the proxy slave, a CPRI L1 link auto-negotiation with a REC to determine whether a L1 synchronization between the proxy slave and the REC is achieved, wherein if the L1 synchronization is achieved, the link bit rate is a common matching link bit rate achieved; and upon the common matching link bit rate being achieved, establishing a CPRI link between the REC and the RE using the common matching link bit rate.

A method of remote communications with an on-board diagnostics (OBD) system of a vehicle includes connecting a vehicle communications device to a connector of a vehicle's OBD system, connecting a remote communications device to a connector of a vehicle tool device, and establishing a network communications link between the vehicle-communications device and a remote communications device. The vehicle communications device receives communications at the vehicle-communications device from the vehicle's OBD system through the connector. A bit stream of the received communications is analyzed over an interval of time. The widths of one or more bit pulses are estimated based on the analyzing of the bit stream. A bit rate of the OBD system is determined based on the estimated widths of the one or more bit pulses. Based on the determined bit rate of the OBD system, bidirectional communications are established between the OBD system and the tool device using the established network communications link between the vehicle-communications device and the remote communications device.

A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined error rate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.

A wireless networking system is provided. The wireless networking system includes a base station device including processing circuitry configured to detect a transmission rate from a portion of a preamble of an incoming packet transmission signal and adapt a radio configuration to receive a remainder of the incoming packet transmission signal at the transmission rate.

Techniques that provide link establishment between a radio equipment controller (REC) and a radio equipment (RE) in a fronthaul network are described herein. In one embodiment, a method includes performing, Common Public Radio Interface (CPRI) Layer 1 (L1) link auto-negotiation operations to establish a CPRI link between the REC and RE. A proxy slave may achieve a hyper frame number (HFN) synchronization with the REC at a link bit rate for a first CPRI bit stream and communicate the first CPRI bit stream and the link bit rate to a proxy master. The proxy master may communicate a second CPRI bit stream to the proxy slave to transmit to the REC. The L1 link auto-negotiation operations are completed and CPRI link is established between the REC and the RE when the REC achieves a HFN synchronization for the second CPRI bit stream.

In a method for establishing a communication link between a first network interface device and a second network interface device comprises, the second network interface device receives a training signal transmitted by the first network interface device. The training signal is for timing synchronization between the second network interface device and the first network interface device. The second network interface device determines, based on at least one physical characteristic of the training signal, a physical layer (PHY) parameter of the first network interface device. A controller of the second network interface device configures one or more components of the second network interface device to operate in a mode that corresponds to the determined PHY operating parameter of the first network interface device.

The present invention enables an apparatus or the like, which does not respond to a communication using a superposed signal, to be used in a system using the superposed signal. This control program, which is for a terminal device connectable to a signal processing device through a communication cable, includes: first identification information acquisition steps for acquiring, from the signal processing device, first identification information for identifying the signal processing device in the terminal device; second identification information acquisition steps for acquiring, through an input part of the terminal device, second identification information for identifying an electric apparatus that is electrically connected to the signal processing device and operates an operation element; generation steps for generating association information for associating the first identification information with the second identification information; and output steps for outputting the association information so that the association information is received by the information processing device.

A wireless networking system is provided. The wireless networking system includes a base station device including processing circuitry configured to detect a transmission rate from a portion of a preamble of an incoming packet transmission signal and adapt a radio configuration to receive a remainder of the incoming packet transmission signal at the transmission rate.

Techniques that provide link establishment between a radio equipment controller (REC) and a radio equipment (RE) in a fronthaul network are described herein. In one embodiment, a method includes performing, Common Public Radio Interface (CPRI) Layer 1 (L1) link auto-negotiation operations to establish a CPRI link between the REC and RE. A proxy slave may achieve a hyper frame number (HFN) synchronization with the REC at a link bit rate for a first CPRI bit stream and communicate the first CPRI bit stream and the link bit rate to a proxy master. The proxy master may communicate a second CPRI bit stream to the proxy slave to transmit to the REC. The L1 link auto-negotiation operations are completed and CPRI link is established between the REC and the RE when the REC achieves a HFN synchronization for the second CPRI bit stream.

The present disclosure relates to a signal processing device and an image display apparatus including the same. A signal processing device according to an embodiment of the present disclosure includes a sampler to downsample a baseband signal; a memory to store the downsampled data; a frequency shifter to read the data in the memory and shift the read data in a frequency domain; a symbol rate calculator to calculate a symbol rate based on the shifted data; a first offset calculator to calculate a first carrier frequency offset based on the calculated symbol rate; a second offset calculator to calculate a second carrier frequency offset based on the calculated first carrier frequency offset; and an offset compensator to compensate for the second carrier frequency offset. Accordingly, a time up to the demodulation completion may be shortened based on the baseband signal.