Aspects of wireless communication are described, including a radiofrequency (RF) amplifier chip, configured for transmitting or receiving data, comprising a first substrate comprising a first material and a second substrate comprising a second material that is different from the first material. The first substrate and the second substrate may be lattice-matched such that an interface region between the first substrate and the second substrate exhibits an sp3 carbon peak at about 1332 cm.Math..sup.1 having a full width half maximum of no more than 5.0 cm.Math..sup.1 as measured by Raman spectroscopy. In some aspects, the first substrate and said second substrate permit said chip to transmit or receive data at a transfer rate of at least 500 megabits per second and a frequency of at least 8 GHz. In some aspects, the RF amplifier chip is part of a satellite transmitter.

Aspects of wireless communication are described, including a radiofrequency (RF) amplifier chip, configured for transmitting or receiving data, comprising a first substrate comprising a first material and a second substrate comprising a second material that is different from the first material. The first substrate and the second substrate may be lattice-matched such that an interface region between the first substrate and the second substrate exhibits an sp3 carbon peak at about 1332 cm.Math..sup.1 having a full width half maximum of no more than 5.0 cm.Math..sup.1 as measured by Raman spectroscopy. In some aspects, the first substrate and said second substrate permit said chip to transmit or receive data at a transfer rate of at least 500 megabits per second and a frequency of at least 8 GHz. In some aspects, the RF amplifier chip is part of a satellite transmitter.

A transmitting device maps complex valued symbols in sequence to physical resource blocks for a sidelink transmission. The transmitting device reserves a first symbol of a subframe, where resource elements in the first symbol of the subframe are not considered in mapping the complex valued symbols to the physical resource blocks for the sidelink transmission. The transmitting device transmits the sidelink transmission after mapping the complex valued symbols to the physical resource blocks. A receiving device receives the sidelink transmission and decodes the sidelink transmission to determine complex valued symbols that are mapped in sequence to physical resource blocks of the sidelink transmission, where the complex valued symbols are not mapped to resource elements in a first symbol of a subframe.

A transmitting device maps complex valued symbols in sequence to physical resource blocks for a sidelink transmission. The transmitting device reserves a first symbol of a subframe, where resource elements in the first symbol of the subframe are not considered in mapping the complex valued symbols to the physical resource blocks for the sidelink transmission. The transmitting device transmits the sidelink transmission after mapping the complex valued symbols to the physical resource blocks. A receiving device receives the sidelink transmission and decodes the sidelink transmission to determine complex valued symbols that are mapped in sequence to physical resource blocks of the sidelink transmission, where the complex valued symbols are not mapped to resource elements in a first symbol of a subframe.

Circuits and methods for operating a transmitter in a communication system is disclosed. The transmitter analyzes a power level along with one or more real-time transmission conditions associated with transmission of a signal. Based on the power level and the one or more real-time transmission, the communication system selects between a low-power circuit and a high-power circuit for processing the signal for transmission.

Circuits and methods for operating a transmitter in a communication system is disclosed. The transmitter analyzes a power level along with one or more real-time transmission conditions associated with transmission of a signal. Based on the power level and the one or more real-time transmission, the communication system selects between a low-power circuit and a high-power circuit for processing the signal for transmission.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive one or more messages scheduling resources allocated for one or more uplink transmissions that at least partially overlap in time with scheduled resources allocated for one or more downlink transmissions. In such cases, the UE may use different communication parameters for overlapping and non-overlapping resources. For example, the UE may receive a configuration of a first set of communication parameters that are configured for an overlapping portion of the resources and a second set of communication parameters that are configured for a non-overlapping portion of the resources. The UE may apply the first set of communication parameters and the second set of communication parameters to the uplink and downlink resources for transmitting or receiving the one or more uplink and downlink communications.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive one or more messages scheduling resources allocated for one or more uplink transmissions that at least partially overlap in time with scheduled resources allocated for one or more downlink transmissions. In such cases, the UE may use different communication parameters for overlapping and non-overlapping resources. For example, the UE may receive a configuration of a first set of communication parameters that are configured for an overlapping portion of the resources and a second set of communication parameters that are configured for a non-overlapping portion of the resources. The UE may apply the first set of communication parameters and the second set of communication parameters to the uplink and downlink resources for transmitting or receiving the one or more uplink and downlink communications.

Wireless communications systems and methods related to communicating control information are provided. A method of wireless communication performed by a user equipment (UE) may include mapping a power reservation signal of a sub-slot resource pool (RP) to an AGC symbol location of a slot RP and transmitting, to at least one other UE, the power reservation signal, wherein a transmit power level of the power reservation signal is based on an estimated transmit power level associated with at least one sub-slot.

Wireless communications systems and methods related to communicating control information are provided. A method of wireless communication performed by a user equipment (UE) may include mapping a power reservation signal of a sub-slot resource pool (RP) to an AGC symbol location of a slot RP and transmitting, to at least one other UE, the power reservation signal, wherein a transmit power level of the power reservation signal is based on an estimated transmit power level associated with at least one sub-slot.