Methods and apparatuses are disclosed for wireless device (WD)-autonomous physical downlink shared channel (PDSCH) receiver (RX) antenna adaptation. In one embodiment, a method implemented in a WD includes one or more of: estimating an expected number of multiple-input multiple-output (MIMO) layers based at least in part on channel state information (CSI) and/or a sounding reference signal (SRS) configuration; determining a set of antennas of a plurality of antennas to use based at least in part on the estimated expected number of MIMO layers; and/or receiving a MIMO signal using the determined set of antennas. In one embodiment, a method implemented in a network node include receiving a channel state information (CSI) report from the WD; and/or scheduling and/or transmiffing a downlink (DL) channel to the WD using a number of multiple-input multiple-output (M11\40) layers, the number of MIMO layers used based at least in part on the received CSI report.

The disclosed subject matter relates to employing modulation layer mapping to improve the performance of multiple-input and multiple-output (MIMO) communication systems. In one embodiment, a method comprises determining, by a device comprising a processor, codeword information in association with establishment of a wireless communication link with a network device of a wireless communication network, wherein the device and the network device are configured to communicate via the communication link using a MIMO communication scheme. The determining the codeword information comprises determining a code rate and determining a number of modulation indexes for the code rate based on signal-to-noise ratios respectively associated with channel layers included in the MIMO communication scheme. The method further comprises sending, by the device, the codeword information to the network device via a control channel of the wireless communication link.

The disclosed subject matter relates to employing modulation layer mapping to improve the performance of multiple-input and multiple-output (MIMO) communication systems. In one embodiment, a method comprises determining, by a device comprising a processor, codeword information in association with establishment of a wireless communication link with a network device of a wireless communication network, wherein the device and the network device are configured to communicate via the communication link using a MIMO communication scheme. The determining the codeword information comprises determining a code rate and determining a number of modulation indexes for the code rate based on signal-to-noise ratios respectively associated with channel layers included in the MIMO communication scheme. The method further comprises sending, by the device, the codeword information to the network device via a control channel of the wireless communication link.

Methods, systems, and devices for wireless communications are described. The techniques described herein support dynamically indicating uplink control channel repetition multiple different types of uplink signaling. A user equipment (UE) may receive first control signaling indicating a first repetition factor for transmission of a feedback message associated with a beam or transmission configuration indicator (TCI) state. The UE may receive second control signaling scheduling transmission of a control message associated with the beam or TCI state. The UE may transmit, in accordance with a second repetition factor, the control message based at least in part on both the feedback message and the control message being associated with the beam. In some cases, the second repetition factor may be configured with the second control signaling.

The invention relates to inserting reference signals in a radio signal to be transmitted over a wireless communication system, the radio signal being emitted according to a specific SS-STBC scheme, the method comprising, inserting the reference signals to transmit them in the radio signal such as samples of these reference signals are in specific positions in the SS-STBC symbol.

Disclosed herein are a gateway-signaling method for Multiple-Input Single-Output (MISO) operation and an apparatus for the same. An apparatus for transmitting a broadcast signal according to an embodiment of the present invention includes a predistortion unit for performing predistortion for decorrelating signals corresponding to transmitters using the number of transmitters used for MISO and a transmitter coefficient index that are identified using a timing and management packet transmitted through a Studio-to-Transmitter Link (STL), thereby generating a pre-distorted signal; and an RF signal generation unit for generating an RF transmission signal using the pre-distorted signal corresponding to the transmitter coefficient index.

To determine an appropriate spatial resource for an uplink control channel. A user terminal includes a receiving section that receives a plurality of entries of information related to a spatial resource for an uplink control channel by using a higher layer, and receives specification information specifying at least one entry among the plurality of entries by using a downlink shared channel, and a control section that controls transmission of delivery acknowledgment information for the downlink shared channel, based on feedback timing of the delivery acknowledgment information and application timing of the spatial resource based on the specification information.

Apparatuses, methods, and systems are disclosed for synchronization signal block reception and synchronization signal block transmission. One apparatus for synchronization signal block reception includes a receiver that receives multiple synchronization signal blocks. The multiple synchronization signal blocks have different power levels corresponding to at least two synchronization signal blocks of the multiple synchronization signal blocks.

The present application provides a spatial layered transmission method and a spatial layered transmission device. The spatial layered transmission method includes steps of: dividing to-be-transmitted data into at least two layers of spatial data; determining a symbol rate for each layer of spatial data, to enable an error between SERs for the layers of spatial data to be smaller than a predetermined error threshold; and encoding each layer of spatial data in accordance with the determined symbol rate, and transmitting the encoded layer of spatial data.

A method for transmitting an uplink control channel from a UE to an eNB in a wireless communication system is disclosed. The method comprises the steps of classifying each of a plurality of resource blocks allocated to a system bandwidth into a plurality of sub-resource blocks; mapping the uplink control channel into a first sub-resource block of a minimum index and a second sub-resource block of a maximum index in accordance with a transmission diversity scheme; and transmitting the uplink control channel to the eNB.