Abstract: The present invention relates to a transmitter and a receiver including multiple first and second transceiving units. Each of the first and the second transceiving units includes a first and a second radiation slices and a first and a second transceiving circuits disposed thereon. In the transmitter, the first and the second transceiving units receive first and second internal transmission signals at first and second polarization from the first and the second radiation slices, and transmit first and second external transmission signals generated from transformation through the first and the second radiation slices. In the receiver, the first and the second transceiving units receive first and second external reception signals at first and second polarization through the first and the second radiation slices, and transmit first and second internal reception signals at first and second polarization generated from transformation through the first and the second radiation slices.

Abstract: In one of the exemplary embodiments, the disclosure is directed to a post network entry connection method applicable to a user equipment. The method would include not limited to: receiving a time unit which may include a payload region and a downlink header region which may include a first BQMR for a first scan beam and a second BQMR for a second scan beam; obtaining a first reference signal from the first BQMR and a second reference signal from the second BQMR; calculating a first signal quality measurement by using the first reference signal and calculating a second signal quality measurement by using the second reference signal; selecting the first scan beam based on the first signal quality measurement being better than at least the second signal quality measurement; and transmitting the first signal quality measurement which corresponds to the first scan beam via another time unit.

Abstract: According to one of the exemplary embodiments, the proposed network entry method is applicable to a user equipment and includes: receiving, within an mmWave band, Q scan beams which have Q IDs over M mmWave time units as each mmWave time unit includes a payload region and a BF header region that includes N BSSs with each of the BSSs corresponding to a different one of the Q scan beams, wherein M, N, and Q are integers greater than 1 and M*N=Q; determining a best beam of the UE based on the BSSs of the Q scan beams; determining a best scan beam of the Q scan beams based on the BSSs of the Q scan beams after determining the best beam of the UE; and transmitting, within the mmWave band, a random access preamble (RAP) by using the best beam of the UE.

Abstract: A beamforming method of millimeter wave communication is introduced herein. the beamforming method is adapted to a base station and includes following steps. A plurality of periodic signals are transmitted by using a frame header of M radio frames via Q base station beams designated as Q scan beams while performing a network entry, wherein M?1 and Q?1. Data packets are transceived by using a payload region of the M radio frames via at least one scheduled beam while a user equipment connection is performed via the scheduled beam selected from the Q base station beams.

Abstract: The present disclosure proposes a hierarchical beamforming method and a base station and a user equipment using the same. The method includes following steps. A network entry procedure is performed via a plurality of coarse beams by using a superframe header of a superframe corresponding to each of the coarse beams. In response to a success message associated with the network entry procedure being received, a network entry done message is transmitted by using a preferred coarse beam among the coarse beams. A user equipment (UE) connection is performed via a plurality of fine beams within a direction range of the preferred coarse beam, so as to determine a preferred fine beam by using a frame header of a basic frame corresponding to each of the fine beams, and perform a data packet transmission by using a packet transmission block of the basic frame corresponding to the preferred fine beam.

Abstract: The present invention provides a monitor-displayed device for car rear vision. It is to install monitors on a dashboard in the car or the car frame on two sides of the front windscreen. The traditional two rear vision mirrors of the car are replaced by the monitors. Image data taken by an image receiver can be displayed synchronously. Rear side image data can be provided to the driver with a broader viewing angle.

Abstract: A recording device for a moving vehicle includes an image receiving unit, a speed calculating unit, a time unit, a positioning unit and a storing unit. The recording device records outside images when the vehicle moves via a camera lens of the image receiving unit. The speed calculating unit calculates speed using a speed gauge linked to the vehicle. Users can adjust time according to their demand by utilizing a time calculating function built in the time unit. Coordinates of vehicle location are obtained by a positioning unit linked to a satellite. The data mentioned above is stored in the storing unit. The device is installed inside the vehicle before the vehicle is factory assembled. When users start the vehicle, the recording device starts recording. When users turn off the vehicle and leave, the recording device can be re-started by using a switch. The image receiving unit keeps recording images.

Abstract: A digital DC bias estimation apparatus and a method thereof for estimating a DC bias of a received signal obtained from a packet after it is received and sampled are provided. The digital DC bias estimation apparatus comprises a symbol boundary detection unit, a preamble pattern identification enabling unit, a preamble pattern identification unit, and a bias calculation unit. The symbol boundary detection unit differentiates a received signal to obtain a differential curve, slices the differential curve into a binary-type comparison base signal by assigning a starting point on a region beyond a transition setting threshold range in the differential curve as a transition point, and issues a boundary signal when a transition is occurred.