There is provided a method in a first network node (e.g. CBSD) for negotiating AAS antenna pattern and for radio planning. The method comprises: determining (310) one or more cell shaping parameters; sending (320) the determined cell shaping parameters to a second network node (e.g. SAS or CxM); receiving (330) an allocation of resources based on the determined cell shaping parameters. Another method is disclosed as well and may comprise: receiving (160) an envelope of radio frequency power for maximizing a coverage area, from a second network node (e.g. SAS); determining (170) a beam pattern based on the received envelope; sending (180) the determined beam pattern to the second node.

The present disclosure relates to a wireless communication apparatus capable of increasing throughput using MIMO in an LOS environment and a method for the same. A wireless communication apparatus based on the LOS-MIMO technique may comprise a multi-link configuration unit, a frequency response correction unit, a signal compensation unit, and a feedback unit. In the apparatus, an additional LOS-MIMO equalizer is used at the front of an LOS-MIMO estimator and a coding unit in order to compensate in-band frequency characteristics of frequency response characteristics estimated by the LOS-MIMO estimator and a signal channel estimator, whereby the LOS-MIMO estimation performance can be remarkably enhanced. Also, precise separation of multiplexed signals through the above-described LOS equalizer can make it possible to increase transmission capacity by using the LOS-MIMO which can be applied to high-order mode (e.g., over 16 quadrature amplitude modulation (QAM)) digital communications.

Apparatus and methods for multi-antenna communications are provided. In certain embodiments, a communication system includes an antenna array including a plurality of antenna elements, and a plurality of RF circuit channels each coupled to a corresponding one of the antenna elements. The plurality of RF circuit channels generate two or more analog baseband signals in response to the antenna array receiving a radio wave. The communication system further includes a controllable amplification and combining circuit that generates two or more amplified analog baseband signals based on amplifying each of the two or more analog baseband signals with a separately controllable gain, and that combines the two or more amplified analog baseband signals to generate a combined analog baseband signal.

Systems and methods are disclosed for detecting one or more predefined signals while suppressing interference. In some embodiments, a method of operation of a wireless device in a wireless network to detect a predetermined signal in the presence of interference comprises detecting one or more first cells and detecting one or more predetermined signals from a second cell while spatially filtering transmissions from one or more perceived directions of the one or more first cells, respectively. In this manner, detection of the one or more predefined signals from the second cell is improved. In some embodiments, the one or more first cells are strong relative to the weaker second cell.

Apparatus and methods for multi-antenna communications are provided. In certain embodiments, a communication system includes an antenna array including a plurality of antenna elements, and a plurality of RF circuit channels each coupled to a corresponding one of the antenna elements. The plurality of RF circuit channels generate two or more analog baseband signals in response to the antenna array receiving a radio wave. The communication system further includes a controllable amplification and combining circuit that generates two or more amplified analog baseband signals based on amplifying each of the two or more analog baseband signals with a separately controllable gain, and that combines the two or more amplified analog baseband signals to generate a combined analog baseband signal.

A method for uplink multiuser data transmission and a system for uplink multiuser multiple input multiple output are provided. The method includes: sending, by an access point (AP), indication information to at least two stations (STAs), wherein the indication information is used for indicating that the at least two STAs perform an uplink multiuser data transmission; receiving, by the AP, uplink data sent by the at least two STAs through channels from the at least two STAs to the AP, respectively; and demodulating, by the AP, the uplink data sent by the at least two STAs using receiving beams corresponding to pre-estimated channels from the at least two STAs to the AP, respectively.

In an aspect, a network device (e.g., BS, core network component, etc.) determines a self-interference measurement (SIM) configuration associated with null-forming at a wireless device (e.g., UE or BS), the null-forming associated with steering at least one receive beam of the wireless device and/or at least one transmit beam of the wireless device away from one or more external sources of self-interference. The network device transmits the SIM configuration to the wireless device. The wireless device performs at least one null-forming procedure in accordance with the SIM configuration.

A method for receiving a Reference Signal (RS) performed by a User Equipment (UE) in a wireless communication system according to an embodiment of the present invention may include receiving a first RS through a first antenna port; and receiving a second RS through a second antenna port which is Quasi Co-Located (QCL)-assumed with the first antenna port, the first and second antenna ports may be QCL-assumed for at least one QCL parameter, and the at least one QCL parameter may include a reception beam related parameter.

A calibration control apparatus (30) includes a receiving-side correction coefficient calculation unit (31) that calculates a receiving-side correction coefficient for calibrating a characteristic difference between reception units (23) based on a propagation path estimation matrix which has, as a matrix element, a propagation path estimation value of each propagation path from transmission units to reception units (23) in a plurality of transmission units of an OAM mode multiplex transmission apparatus and a plurality of reception units (23) of an OAM mode multiplex reception apparatus (20).

An example method may include receiving a pre-payload portion of a packet at a receiver node. A link associated with a sender node of the packet may be identified based on the pre-payload portion. One or more baseband receive parameters associated with the identified link may be selected and loaded at the receiver node. A payload of the packet may be received at the receiver node using the selected baseband receive parameters. Another example method may include detecting arrival of a packet at a receiver node by detecting OTA energy using at least one of multiple antenna sectors. One or more RF receive parameters of the receiver node may be selected based on information included in or determined from the pre-payload portion of the packet. A payload of the packet may be received at the receiver node using the selected RF receive parameters of the receiver node.