Abstract: A vehicle radar system includes an antenna module, an RF module, and a signal processor. The antenna module includes at least one transmitting antenna and multiple receiving antennas. The RF module includes a transmitting segment that generates and transmits transmitting waves each carrying a transmitting signal, and a receiving segment that receives reflected waves and incorporates received signal carried by the reflected waves with the transmitting signal into a beat signal. The signal processor performs 2D-FFT on the beat signals to obtain estimated position information of the target object, determines whether a distance value of the estimated position information is greater than a preset distance threshold, and when it is determined that the distance value is greater than the preset distance threshold, perform two-dimensional Multiple Signal Classification (2D-MUSIC) on the estimated position information, so as to obtain an exact distance value and an exact angle value of the target object.

Abstract: A method for uplink communication to be executed by a RAN includes: for each of UEs, establishing connection with one of RUs; host device conducting data transmission with each UE in multiple phase delays through controlling the beamforming antenna of the UE via the RU that is connected to the UE, and calculating an error rate with respect to each of the phase delays; the host device finding one of the phase delays that has the lowest error rate and setting a configuration of beamforming antenna of the UE with the phase delay that has the lowest error rate, such that the UE and the RU connected thereto form a spatially isolated relationship; and within the spatially isolated relationship, the RU receiving uplink data from the UE and transmitting the uplink data to the host device.