3 results about "Frequency domain multiplexing" patented technology

Methods, systems, and apparatus for wireless communication are described. The techniques described herein relate to Frequency Division Multiplexing (FDM) of a Demodulation Reference Signal (DMRS). A User Equipment (UE) receives control signaling including configuration for uplink control messages. The UE generates uplink control messages based on the configuration and a first uplink control message format from multiple formats. The uplink control message includes a DMRS in FDM with uplink control information (UCI). The first uplink control message format is associated with a Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveform and the number of four or more OFDM symbols. The UE uses the DFT-s-OFDM waveform to transmit the uplink control messages.

The application belongs to the technical fields of electromagnetic metamaterials and microwave devices, and discloses a multifunctional reflection-type polarization conversion and wave absorber based on a nested square loop super surface, which is composed of reflection units, each of which comprises a metal resonance layer, an intermediate dielectric layer and a metal ground layer, the metal resonance layer has a nested loop topology structure with a non-continuous conductive path, and comprises an outer loop resonator and an inner loop resonator which are geometrically coincident with each other, are nested with each other, are both square open loop structures and have diagonal cut-off gaps, and form four L-shaped metal branches which are centrally rotationally symmetrically distributed, and the inner loop resonator is provided with a blocking gap, so that the L-shaped metal branches of the inner loop resonator are disconnected into non-closed metal segments. The application realizes multi-band and multifunctional electromagnetic wave regulation and control in a single passive structure, has the characteristics of high integration, strong frequency domain multiplexing and low preparation cost, and has wide application value in radar stealth and wireless communication systems.

Apparatuses, methods, and systems are disclosed for configuring a reference signal corresponding to a waveform type. One method includes receiving, at a user equipment from a network device, first configuration information indicating a first physical channel with a first waveform type. The method includes receiving, from a network device, second configuration information indicating a first reference signal with the first waveform type. The method includes determining whether a frequency domain multiplexing pattern with combs, frequency domain orthogonal cover code, or a combination thereof is supported for transmission of the first reference signal with the first waveform type.