Disclosed is a transmission scheme for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. According to the transmission scheme, a precoding weight multiplying unit multiplies a precoding weight by a baseband signal after a first mapping and a baseband signal after a second mapping and outputs the first modulated signal and the second modulated signal. In the precoding weight multiplying unit, precoding weights are regularly hopped.

A network controller is configured to receive a data packet from a core network for routing to a device in a wireless network. The controller may then select an antenna set from a plurality of antenna sets that are distributed across different base stations operable to transmit data packets to the destination device. The antenna set may be selected from the plurality of antenna sets based on a distribution pattern. For example, the distribution pattern may be a pseudo-randomly generated distribution pattern. The controller may then route the at least one data packet to the base station which the selected antenna set is implemented for transmission to the device. The antenna sets may be implemented on one base station, or implemented so that the antennas of an antenna set are distributed across multiple base stations. The antenna sets may also be configured to be of any number of antennas.

A communication system is provided comprising a transmitter coupled to a switch, which is further coupled to at least two antennas for switching the transmit signal to one of the antennas, with no feedback. The communication system further comprises at least one receiver for receiving the transmitted signal.

The communication system in the present invention is able to help mitigate the effects of multipath. Previous attempts to mitigate the effects of multipath suffer from various problems: increased complexity needed to measure channel parameters and a feedback loop to switch the transmit antenna based on the parameters.

The system is particularly useful when deployed in a MAS system or a jamming system.

Certain aspects of the present disclosure provide techniques for a method for wireless communication by a first wireless entity, comprising: receiving signaling from a second network entity to configure reconfigurable intelligent surface (RIS) elements based on a direction of a target incident signal and a direction of a target reflected signal, and configuring the RIS elements based on the direction of the target incident signal and the direction of the target reflected signal and to randomize reflections, based on the signaling.

Disclosed is a transmission scheme for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. According to the transmission scheme, a precoding weight multiplying unit multiplies a precoding weight by a baseband signal after a first mapping and a baseband signal after a second mapping and outputs the first modulated signal and the second modulated signal. In the precoding weight multiplying unit, precoding weights are regularly hopped.

Certain aspects of the present disclosure provide techniques for a method for wireless communication by a first wireless entity, comprising: receiving signaling from a second network entity to configure reconfigurable intelligent surface (RIS) elements based on a direction of a target incident signal and a direction of a target reflected signal, and configuring the RIS elements based on the direction of the target incident signal and the direction of the target reflected signal and to randomize reflections, based on the signaling.

An outphasing transmitter includes a decomposition block, first and second power amplifiers, and antennas in a phased array antenna panel. The decomposition block decomposes a composite input signal into first and second decomposed radio frequency (RF) signals. The first and second decomposed RF signals are coupled to the first and second power amplifiers respectively. First and second non-overlapping sub-arrays of the antennas may be uniquely associated with the first and second power amplifiers respectively. Alternatively, first and second groups of interleaved antenna rows may be uniquely associated with the first and second power amplifiers respectively. Alternatively, first and second random pluralities of the antennas may be randomly hard-wired to the first and second power amplifiers respectively. Alternatively, first and second pluralities of the antennas may be dynamically and selectably assigned to the first and second power amplifiers respectively.

A method and a user equipment (UE) for transmitting sounding reference signals via multiple antenna ports in a wireless communication system are discussed. The method according to one embodiment includes receiving a parameter via a higher layer; applying a code division multiplexing (CDM) scheme to the sounding reference signals using the parameter; applying a frequency division multiplexing (FDM) scheme to the sounding reference signals when the parameter is a first value; and transmitting the sounding reference signals via the multiple antenna ports.

The present invention provides a method of transmitting broadcast signals. The method includes, formatting, by an input formatting block, input streams into plural PLPs (Physical Layer Pipes); encoding, by an encoder, data in the plural PLPs; processing, by a framing and interleaving block, the encoded data in the plural PLPs to output at least one signal frame; and waveform modulating, by a waveform generation block, data in the at least one signal frame and transmitting, by the waveform generation block, broadcast signals having the waveform modulated data.

The present invention provides a method of transmitting broadcast signals. The method includes, formatting, by an input formatting block, input streams into plural PLPs (Physical Layer Pipes); encoding, by an encoder, data in the plural PLPs; processing, by a framing and interleaving block, the encoded data in the plural PLPs to output at least one signal frame; and waveform modulating, by a waveform generation block, data in the at least one signal frame and transmitting, by the waveform generation block, broadcast signals having the waveform modulated data.