A system includes a first controller configured to transmit a synchronization signal to a second controller. The second controller is configured to produce a PWM signal. The system also includes a counter configured to provide a count for the second controller, where the second controller is configured to initiate rising edges and falling edges of the PWM signal based on the count from the counter. The second controller is also configured to measure an error between a time when the synchronization signal is received at the second controller and an expected time of receipt for the synchronization signal. The second controller is also configured to adjust a period of the counter based at least in part on the error.

A system includes a first controller configured to transmit a synchronization signal to a second controller. The second controller is configured to produce a PWM signal. The system also includes a counter configured to provide a count for the second controller, where the second controller is configured to initiate rising edges and falling edges of the PWM signal based on the count from the counter. The second controller is also configured to measure an error between a time when the synchronization signal is received at the second controller and an expected time of receipt for the synchronization signal. The second controller is also configured to adjust a period of the counter based at least in part on the error.

The present disclosure discloses a data transmission method, a transmit end device, and a receive end device. The method includes performing bit mapping processing on a first part of bits of a first data bit group, to generate a first modulation symbol and determining a first precoding matrix from multiple preset precoding matrices according to a second part of bits of the first data bit group. The method also includes performing precoding processing on the first modulation symbol according to the first precoding matrix, to obtain a first modulation symbol matrix and transmitting the first modulation symbol matrix to a receive end device by using at least two antennas.

A packaged circuit including a digital controller, a port physical layer and a digital coding circuit is provided. The digital controller outputs digital data in parallel via a parallel data channel, and the digital data includes a plurality of data bits. The port physical layer includes a clock generator, and outputs a data signal according to the data bits. The clock generator outputs a clock signal to the digital controller. The digital coding circuit is coupled to the digital controller and the port physical layer, and receives the digital data and the clock signal. The digital coding circuit codes the clock signal to generate a plurality of clock bits, and outputs the clock bits to the port physical layer. The port physical layer converts the clock bits into an output clock and outputs the output clock.

A packaged circuit including a digital controller, a port physical layer and a digital coding circuit is provided. The digital controller outputs digital data in parallel via a parallel data channel, and the digital data includes a plurality of data bits. The port physical layer includes a clock generator, and outputs a data signal according to the data bits. The clock generator outputs a clock signal to the digital controller. The digital coding circuit is coupled to the digital controller and the port physical layer, and receives the digital data and the clock signal. The digital coding circuit codes the clock signal to generate a plurality of clock bits, and outputs the clock bits to the port physical layer. The port physical layer converts the clock bits into an output clock and outputs the output clock.

Embodiments provide a transmission method for wireless transmission of data within a communication system. The method includes a step of transmitting the data in a manner that is time-synchronized with a reference signal while using a frequency hopping pattern and/or time hopping pattern.

A system for dynamic calibration of a first radiofrequency chain to be calibrated comprises: an injection device for injecting a calibration signal whose waveform is predetermined, connected upstream of the radiofrequency chain to be calibrated, and a compensation device for compensating the amplitude-wise and phase-wise disparities caused by the first chain to be calibrated including a controlled compensation filter. The automatic calibration system comprises a device for temporal erasure of the calibration signal injected with the aid of an analogue or digital subtracter, the subtracter being connected downstream of the first radiofrequency chain to be calibrated.

A system for dynamic calibration of a first radiofrequency chain to be calibrated comprises: an injection device for injecting a calibration signal whose waveform is predetermined, connected upstream of the radiofrequency chain to be calibrated, and a compensation device for compensating the amplitude-wise and phase-wise disparities caused by the first chain to be calibrated including a controlled compensation filter. The automatic calibration system comprises a device for temporal erasure of the calibration signal injected with the aid of an analogue or digital subtracter, the subtracter being connected downstream of the first radiofrequency chain to be calibrated.

An objective of the present technology is to provide a transmission device, a reception device, and a transceiver system of which miniaturization can be achieved. The transmission device includes an oscillator configured to oscillate a first clock signal; and a register signal reception unit configured to receive a register signal transmitted from a reception device and used for controlling the first clock signal. The reception device includes a signal generation unit configured to generate a register signal for controlling a first clock signal transmitted from the transmission device based on a comparison result obtained by comparing a reference clock signal with one of the first clock signal and a second clock signal which is based on the first clock signal; and a register signal transmission unit configured to transmit the register signal generated by the signal generation unit to the transmission device.

An objective of the present technology is to provide a transmission device, a reception device, and a transceiver system of which miniaturization can be achieved. The transmission device includes an oscillator configured to oscillate a first clock signal; and a register signal reception unit configured to receive a register signal transmitted from a reception device and used for controlling the first clock signal. The reception device includes a signal generation unit configured to generate a register signal for controlling a first clock signal transmitted from the transmission device based on a comparison result obtained by comparing a reference clock signal with one of the first clock signal and a second clock signal which is based on the first clock signal; and a register signal transmission unit configured to transmit the register signal generated by the signal generation unit to the transmission device.