Systems and associated methods for improved beamforming of the phase array antenna are disclosed herein. In one embodiment, a communication system for wireless signals has a phase array antenna having a plurality of individual antennas and a plurality of electrically conductive traces. The individual traces electrically connect corresponding individual antennas with a transmitter. The lengths of individual traces Ti, Tk satisfy equation Abs ((TiTk) mod ())</B, where is a wavelength of the wireless signal and /B is a fraction of .

A method for a transmitter of a mobile communication system transmitting and receiving signals according to an embodiment of the present specification comprises the steps of transmitting to a receiver system information for transmitting a signal to the receiver including a connection between a wireless resource and a transmitting antenna; transmitting a reference signal to the receiver based on the system information; and receiving from the receiver feedback information generated based on the reference signal. According to an embodiment of the present specification, in a beamforming transmission method of a mobile communication system, a transmitter can determine whether to perform digital pre-coding without advance information from a receiver and can consequently perform a transmission, and can thereby perform lower-overhead and efficient signal transmission/reception.

System, devices, and methods facilitate determining positioning using distributed antenna system with service availability monitoring. Positioning methods include network based methods and handset assisted methods in addition to a monitoring system to report any service outage and possible location information loss. The system provides location information also at handset only level through application or apps and operating systems with online and off-line access to location database data. A combined monitoring system that monitors antenna output power for mobile coverage and service availability helps also in monitoring the availability of the localization system and dynamic update of lookup information. Monitoring system provides also asset tracking and service analytics features for the active or passive distributed antenna system.

A transmission method includes generating a first precoded signal and a second precoded signal by performing a precoding process on a first baseband signal and a second baseband signal, outputting a third signal by inserting a pilot signal into the first precoded signal, outputting a fourth signal by applying a first phase change to the second precoded signal, outputting a fifth signal by inserting a pilot signal into the fourth signal, and outputting a sixth signal by applying a second phase change to the fifth signal.

Various aspects of the present disclosure relate to a UE that receives a resource allocation for wireless communication associated with using at least two antennas of the UE, and the wireless communication includes a respective signal associated with each respective antenna of the two antennas. The UE can multiplex a set of modulation symbols associated with the two antennas based on a cyclic-prefix orthogonal frequency-domain multiplex operation. The UE can then transmit the respective signal associated with each respective antenna of the two antennas based on the multiplexing, where a delay of a first signal associated with a first antenna relative to a second signal associated with a second antenna is based on the resource allocation for the wireless communication.

A circuit may include an input to receive a signal corresponding to a radio frequency signal received at each element of an antenna array. The circuit may include a beamforming circuit configured to determine two or more samples of a symbol period of the signal from each antenna element and to determine the error estimates for each antenna element based on the two or more samples. The beamforming circuit may be configured to determine one of a line or a plane that best fits the error estimates; determine a direction of arrival of the radio frequency signal based on one or more parameters of the line or the plane and determine a fractional delay for each antenna element based on the direction of arrival of the radio frequency signal.

Various embodiments of the present technology relate generally to wireless power systems. More specifically, some embodiments relate to the use of time reversal techniques utilizing time diversity (e.g., different multipath arrivals at the same antenna) to achieve coherency from the same transmission node. For example, instead of initiating outgoing transmissions (e.g., power signals) at the same time, various embodiments can initiate the outgoing signals from the various antennas in a staggered timing that is a reversal of the arrival times of an incoming signal. As a result of staggering the start of the outgoing signals, the signals will arrive at the destination at approximately the same time even though they have traveled different paths having different propagation delays.

A transmission device that improves data reception quality includes: a first pilot inserter that inserts a pilot signal into a first precoded signal; a phase changer that applies a phase change of i to the second precoded signal, where i is a symbol number and an integer that is greater than or equal to 0; an inserter that inserts a pilot signal into the second precoded signal applied with the phase change; and a phase changer that applies a phase change to the second precoded signal applied with the phase change and inserted with the pilot signal. satisfies /2 radians<< radians or radians<<3/2 radians. When the communications scheme is an OFDM scheme, the phase changer and the phase changer apply a phase change, and when the communications scheme is a single-carrier scheme, do not apply a phase change.

A transmission device that improves data reception quality includes: a first pilot inserter that inserts a pilot signal into a first precoded signal; a phase changer that applies a phase change of i to the second precoded signal, where i is a symbol number and an integer that is greater than or equal to 0; an inserter that inserts a pilot signal into the second precoded signal applied with the phase change; and a phase changer that applies a phase change to the second precoded signal applied with the phase change and inserted with the pilot signal. satisfies /2 radians<< radians or radians<<3/2 radians. When the communications scheme is an OFDM scheme, the phase changer and the phase changer apply a phase change, and when the communications scheme is a single-carrier scheme, do not apply a phase change.

A first relay station capable of performing, together with a second relay station, a non-replay relay for a first radio signal transmitted from a transmitting station for a receiving station having one antenna includes an antenna, a radio and a controller. The radio includes a receiver that converts the first radio signal into a baseband signal, an FIR filter that adds a delay to the baseband signal, and a transmitter that converts the signal output from the FIR filter into a second radio signal transmitted from the antenna to the receiving station. The controller ensures that the second radio signals transmitted from the respective antennas of the first and second relay stations have different delays, and that the FIR filter The delay is set in the FIR filter.