Embodiments of the present invention provide a transmission status determining method, where the method includes: receiving, by a receive end device in a first time period, a first symbol sequence sent by a transmit end device; determining a first modulation parameter set according to the first symbol sequence; and determining, according to preset first mapping relationship information, a first transmission status corresponding to the first modulation parameter set as a transmission status of the transmit end device in a second time period, where the first mapping relationship information is used to indicate a one-to-one mapping relationship between N transmission statuses and N modulation parameter sets, the first modulation parameter set belongs to the N modulation parameter sets, and the second time period is later than the first time period.

Embodiments of the present disclosure provide a signal processing apparatus, a signal transmitting apparatus and a receiver, which are adapted for a frequency division multiplexing system having a high-order modulation format. A receiver having a high-magnification sampling rate by inserting a pilot signal between neighboring subcarriers at a transmitter side, calculating a laser phase noise according to a phase of the pilot signal at a receiver side, and performing down-sampling and equalization processing after performing carrier phase recovery according to the laser phase noise, so that a laser phase noise having a wide frequency may be accurately compensated, thereby having a relatively powerful carrier phase recovery ability.

Wide band quadrature signal generation includes a frequency synthesizer generating a LO or 2LO signal, a polyphase filter coupled to receive the LO signal and generate first in-phase and quadrature LO signals, a 2:1 frequency divider coupled to receive the 2LO signal and generate second in-phase and quadrature LO signals, and a LO signal selector for selecting either the first or second in-phase LO signals as an output in-phase LO signal and either the first or second quadrature LO signals as an output quadrature LO signal based on an output frequency. In some embodiments, when the output frequency is above a threshold, the first in-phase and quadrature LO signals are selected as the output in-phase and quadrature LO signals and when the output frequency is at or below the threshold, the second in-phase and quadrature LO signals are selected as the output in-phase and quadrature LO signals.

The present technology relates to a signal processing apparatus and method which can suppress increase in power consumption. In an aspect of the present technology, control data, which is for controlling frequency modulation to a carrier signal using digital data to be transmitted, and for suppressing a time average of a fluctuation amount of a frequency modulation amount more than a case of controlling the frequency modulation to the carrier signal using the digital data is generated, the frequency modulation is performed to the carrier signal on the basis of the generated control data, and the carrier signal to which the frequency modulation is performed is transmitted as a transmission signal. The present technology can be applied to, for example, a signal processing apparatus, a transmission apparatus, a reception apparatus, a communication apparatus, or an electronic apparatus having a transmission function, a reception function, or a communication function, or a computer which controls these.

A transmitter with compensating mechanism of pulling effect includes an output unit and a correction unit. The output unit mixes a first correction signal and a second correction signal according to an oscillating signal to generate a modulated signal, and to amplify the modulated signal to generate a first output signal. The correction unit analyzes the power of the first output signal to generate a first coefficient and a second coefficient, and generate the first correction signal and the second correction signal according to the first coefficient, the second coefficient, an in-phase data signal, and a quadrature data signal.

A method for a user equipment (UE) is disclosed. The method includes receiving, by the UE, downlink control information (DCI) for a downlink (DL) scheduling assignment (DL-DCI), the DL-DCI indicating a first uplink (UL) carrier associated with a Physical Uplink Control Channel (PUCCH) resource configuration for transmitting an aperiodic UL transmission for uplink control information (UCI), and transmitting, by the UE, the aperiodic UL transmission for UCI in a second UL carrier without a PUCCH resource configuration, where the UE determines a resource allocation of the second UL carrier based on the DL-DCI. The DL-DCI includes at least one of: a UL/supplementary UL (SUL) carrier indicator, a Hybrid Automatic Repeat reQuest (HARQ)-ACK resource indicator (ARI), a sounding reference signal (SRS) request field, a HARQ timing indicator, or a channel station information (CSI) request.

According to one aspect of the present disclosure, there is provided a device that includes: a first quadrature modulator configured to receive an in-phase portion of a baseband signal and a quadrature portion of the baseband signal, and to produce a first portion of an output signal according to the in-phase and quadrature portions of the baseband signal; a second quadrature modulator configured to receive a first modified signal and a second modified signal, and to produce a second portion of the output signal according to the first and second modified signals; an output circuit configured to sum the first and second portions of the output signal, and to transmit the output signal to an antenna; and a mode selection circuit configured to turn on the first quadrature modulator, to receive a control signal, and to determine whether to turn on the second quadrature modulator according to the control signal.

A carrier leakage correction method for a quadrature modulator according to an embodiment includes inputting a test signal with a frequency f.sub.BB to a transmitter and up-converting the test signal with a frequency f.sub.L0 and down-converting with the frequency f.sub.L0. A frequency 2f.sub.BB component is detected in the down-converted test signal. One or a plurality of parameters of the transmitter is/are adjusted so as to reduce a magnitude of the detected frequency 2f.sub.BB component in the test signal.

Methods, systems, and devices for wireless communications are described. In one example, a method includes selecting between a first frequency range and a second frequency range to transmit a physical channel, the second frequency range being higher than the first frequency range, and jointly encoding at least two fields of the physical channel based at least in part on the selected frequency range. In some cases, the method includes selecting between a first frequency range and a second frequency range to transmit a physical channel. In some cases, the second frequency range is higher than the first frequency range. The method may further include adjusting a quantity of bits associated with a field of the physical channel based at least in part on the selected frequency range.

A carrier leakage correction method for a quadrature modulator according to an embodiment includes inputting a test signal with a frequency f.sub.BB to a transmitter and up-converting the test signal with a frequency f.sub.L0 and down-converting with the frequency f.sub.L0. A frequency 2f.sub.BB component is detected in the down-converted test signal. One or a plurality of parameters of the transmitter is/are adjusted so as to reduce a magnitude of the detected frequency 2f.sub.BB component in the test signal.