There is disclosed a method of operating a radio node in a wireless communication network. The method includes communicating utilising signaling, wherein communicating utilising signaling is based on performing pulse-shaping pertaining to the signaling, wherein pulse-shaping is based on a pulse-shaping indication. The disclosure also pertains to related devices and methods.

A restraint control module is provided in this disclosure. The restraint control module is configured to communicate a sync pulse to a sensor. The control module may include a sync pulse driver circuit and a memory. The memory may store the waveform profile of a sync pulse. The sync pulse driver circuit generates a sync pulse in response to the waveform profile stored in the memory. The sync pulse may be transmitted to one or more sensors. The waveform profile stored in the memory may be derived from a sync pulse with reduced electro-magnetic emissions by applying spectrum analysis.

A radio communications method includes carrying out, by a transmitter, transmission operations that include generating digital transmission signals carrying symbols to be transmitted and having a predefined time length; and transmitting a radio frequency signal carrying, in successive, non-overlapped time frames or slots having the predefined time length, the digital transmission signals generated. The method further includes carrying out, by a receiver, reception operations that include receiving the radio frequency signal transmitted by the transmitter; processing the received radio frequency signal to obtain a corresponding digital incoming signal; applying an oversampling operation to the digital incoming signal thereby obtaining an oversampled digital incoming signal; detecting successive, non-overlapped time frames/slots with the predefined time length in the oversampled digital incoming signal; and, for each detected time frame/slot, estimating respective symbols carried by the oversampled digital incoming signal in the time frame/slot with a predefined reception matrix incorporating a predefined Kalman filter.

The transmission unit includes a digital signal source and a pulse generation circuit. The digital signal source generates a rectangular wave signal. The pulse generation circuit includes a short stub and an open stub, and generates a pulse signal corresponding to the rectangular wave signal. The receiving unit receives the pulse signal from the transmission unit via a lossy transmission path. A comparison circuit having a hysteresis function converts the received pulse signal into a rectangular wave signal.

An apparatus to transmit and receive wireless communications is disclosed in which the transmit circuitry includes a square root raised cosine filter to pulse shape modulate signals and the receive circuitry includes a higher order Nyquist receive filter coupled to receive the input signals and remove the pulse shaping modulation. The cascaded combination of the transmit and receive filters has a frequency response equivalent to a higher order generalized raised cosine filter response.

A restraint control module is provided in this disclosure. The restraint control module is configured to communicate a sync pulse to a sensor. The control module may include a sync pulse driver circuit and a memory. The memory may store the waveform profile of a sync pulse. The sync pulse driver circuit generates a sync pulse in response to the waveform profile stored in the memory. The sync pulse may be transmitted to one or more sensors. The waveform profile stored in the memory may be derived from a sync pulse with reduced electro-magnetic emissions by applying spectrum analysis.

A Serializer/Deserializer (SERDES) circuit is disclosed. The circuit includes an input/output (I/O) pad for coupling to a dual duplex SerDes link. A transmit circuit is coupled to the I/O pad, and includes transmit rate selection circuitry to select between data transmission at a full rate or a sub-rate. A receive circuit is coupled to the I/O pad, and includes receive rate selection circuitry to select between data receipt at the full rate or the sub-rate. Data transmitted by the transmit circuit is at a data rate different than data received by the receive circuit.

Methods and apparatuses for transmitting and detecting channel reservation preamble in a NR shared spectrum are described. An aspect may include determining whether a first reservation preamble of a first operator is received on a first time slot of multiple time slots of a downlink channel from a first network entity, and transmitting a second reservation preamble of the first operator on an uplink channel to the second network entity. Another aspect may include generating a first reservation preamble of a first operator based on at least one of a compressed representation in a signal space, a basis function of the signal space, or a CAZAC sequences; and transmitting, on a first timeslot of multiple time slots of a downlink channel, the first reservation preamble of the first operator to at least a UE. In another aspect, the SFN transmission of the first and second reservation preambles, and the low latency detection methods of the reservation preambles have been disclosed.

The present invention provides a signal modulation method. The method includes: generating a transmit signal pulse waveform, where a width of the pulse waveform is , each pulse waveform is associated with n symbols (n>1), a width of each symbol is , and $=\frac{}{n};$
performing an operation on every n consecutive symbols in a to-be-sent symbol flow and the pulse waveform according to a preset operation manner, to generate an associated signal of the symbols and the pulse waveform; and sending the associated signal by using a transmission channel. The present invention helps improve spectral efficiency of a system. In addition, symbols are mutually constrained based on a correlation between the symbols, and information symbols are scattered to a plurality of symbols, thereby helping improve a capability of resisting noise and attenuation by a signal.

The transmission unit (10) includes a digital signal source (11) and a pulse generation circuit (14). The digital signal source (11) generates a rectangular wave signal. The pulse generation circuit (14) includes a short stub (141) and an open stub (142), and generates a pulse signal corresponding to the rectangular wave signal. The receiving unit (30) receives the pulse signal from the transmission unit (10) via a lossy transmission path (20). A comparison circuit (32) having a hysteresis function converts the received pulse signal into a rectangular wave signal.