A wireless communication apparatus performs communication for which a receiving timing and a transmitting timing are defined by using time slots. The wireless communication apparatus includes a control circuitry configured to control the wireless communication apparatus. The control circuitry includes a decoding circuitry configured to start a decoding process, on data received in a first time slot, immediately after a start of a second time slot subsequent to the first time slot. When a result of the decoding process is information requesting the wireless communication apparatus to perform transmission, the control circuitry is configured to perform a transmission preparation process from an end of the decoding process to a start of a third time slot subsequent to the second time slot, within a period of the second time slot for enabling the wireless communication apparatus to perform transmission.

A wireless communication apparatus performs communication for which a receiving timing and a transmitting timing are defined by using time slots. The wireless communication apparatus includes a control circuitry configured to control the wireless communication apparatus. The control circuitry includes a decoding circuitry configured to start a decoding process, on data received in a first time slot, immediately after a start of a second time slot subsequent to the first time slot. When a result of the decoding process is information requesting the wireless communication apparatus to perform transmission, the control circuitry is configured to perform a transmission preparation process from an end of the decoding process to a start of a third time slot subsequent to the second time slot, within a period of the second time slot for enabling the wireless communication apparatus to perform transmission.

The present invention allows for an efficient communication between a terminal apparatus and a base station apparatus. The terminal apparatus generates and transmits a reference signal associated with a transmission of a Narrow Band Physical Uplink Shared Channel (NPUSCH) in a subframe. A plurality of first subcarriers include a plurality of second subcarriers and a plurality of third subcarriers, and a plurality of fourth subcarriers include a plurality of fifth subcarriers and a plurality of sixth subcarriers. In a case that the NPUSCH is mapped to the plurality of second subcarriers or the plurality of third subcarriers, the reference signal is mapped to the plurality of first subcarriers, and in a case that the NPUSCH is mapped to the plurality of fifth subcarriers or the plurality of sixth subcarriers, the reference signal is mapped to the plurality of fourth subcarriers.

The present invention allows for an efficient communication between a terminal apparatus and a base station apparatus. The terminal apparatus generates and transmits a reference signal associated with a transmission of a Narrow Band Physical Uplink Shared Channel (NPUSCH) in a subframe. A plurality of first subcarriers include a plurality of second subcarriers and a plurality of third subcarriers, and a plurality of fourth subcarriers include a plurality of fifth subcarriers and a plurality of sixth subcarriers. In a case that the NPUSCH is mapped to the plurality of second subcarriers or the plurality of third subcarriers, the reference signal is mapped to the plurality of first subcarriers, and in a case that the NPUSCH is mapped to the plurality of fifth subcarriers or the plurality of sixth subcarriers, the reference signal is mapped to the plurality of fourth subcarriers.

Methods, systems and device for achieving synchronization in an orthogonal time frequency space (OTFS) signal receiver are described. An exemplary signal reception technique includes receiving an OTFS modulated wireless signal comprising pilot signal transmissions interspersed with data transmissions, calculating autocorrelation of the wireless signal using the wireless signal and a delayed version of the wireless signal that is delayed by a pre-determined delay, thereby generating an autocorrelation output, processing the autocorrelation filter through a moving average filter to produce a fine timing signal. Another exemplary signal reception technique includes receiving an OTFS modulated wireless signal comprising pilot signal transmissions interspersed with data transmissions, performing an initial automatic gain correction of the received OTFS wireless signal by peak detection and using clipping information, performing coarse automatic gain correction on results of a received and initial automatic gain control (AGC)-corrected signal.

A receiving circuit, a transmission circuit and a system capable of reducing the effect of noise are provided. The receiving circuit includes: a pulse width detection unit which determines whether or not the pulse width of a pulse signal outputted based on comparison between a received-signal voltage and a reference voltage is smaller than a predetermined width; a reference voltage setting unit which, when the pulse width is smaller than the predetermined width, sets the reference voltage to be equal to or higher than a predetermined voltage; and an output control unit which, when the pulse width is equal to or larger than the predetermined width, causes a digital signal based on the pulse signal to be outputted or, when the pulse width is smaller than the predetermined width, performs control not to output the digital signal.

A receiving circuit, a transmission circuit and a system capable of reducing the effect of noise are provided. The receiving circuit includes: a pulse width detection unit which determines whether or not the pulse width of a pulse signal outputted based on comparison between a received-signal voltage and a reference voltage is smaller than a predetermined width; a reference voltage setting unit which, when the pulse width is smaller than the predetermined width, sets the reference voltage to be equal to or higher than a predetermined voltage; and an output control unit which, when the pulse width is equal to or larger than the predetermined width, causes a digital signal based on the pulse signal to be outputted or, when the pulse width is smaller than the predetermined width, performs control not to output the digital signal.

A method for processing an electrical signal comprises receiving an electrical signal comprising a frequency modulated signal encoding digital data; sampling a first portion of the electrical signal to obtain a plurality of samples to obtain a first sample set; determining an index value from the first sample set by assigning a value to each sample in the first sample set based upon an amplitude of the sample; comparing the determined index value with a plurality of predetermined index values to identify a first output value from a plurality of predetermined output values, each of the predetermined index values corresponding to one of the plurality of predetermined output values; and outputting an indication of the output value. Each of the predetermined output values indicates a respective frequency modulation encoded value and the first output value indicates a frequency modulation encoded value within the first portion of the electrical signal.

Apparatuses and methods related to digital mobile radio (DMR) with enhanced transceiver are disclosed herein. The transceiver detects waveforms of signals received by a digital mobile station radio (MS). By detecting whether the waveforms of the signals, the transceiver allows a digital baseband processor of the MS to remain in a sleep state while the signals are being detected by the DMR, thereby reducing an amount of power used while the signals are being detected.

A circuit structure for efficiently demodulating an FSK signal in a wireless charging device, comprising a data sampling module, a period point counting module, a data distribution module, and a period point processing module. An input terminal of the period point counting module is connected to an output terminal of the data sampling module; an input terminal of the data distribution module is connected to an output terminal of the period point counting module; and an input terminal of the period point processing module is connected to an output terminal of the data distribution module.