Sensors, Vol. 23, Pages 1034: User-Driven Relay Beamforming for mmWave Massive Analog-Relay MIMO

Sensors, Vol. 23, Pages 1034: User-Driven Relay Beamforming for mmWave Massive Analog-Relay MIMO Sensors doi: 10.3390/s23021034 Authors: Masashi Iwabuchi Yoghitha Ramamoorthi Kei Sakaguchi Sixth-generation mobile communication (6G) aims to further improve capacity and reliability by controlling the radio propagation environment. Millimeter wave (mmWave) high-frequency band communication offers large bandwidth at the cost of high attenuation, even for smaller distances. Due to this, fewer multiple input multiple outputs (MIMO) multiplexing is possible at the base station (BS). Distributed analog relay nodes with beamforming capability improve the received power and MIMO multiplexing of mmWave communication. Due to limited signal processing, the analog relay node cannot perform beam search and tracking using these mmWave reference signals. The beam search and tracking are possible at BS or user equipment at the cost of increased control overhead. To reduce this overhead and provide relay-based 6G communication, we propose user-driven relay beamforming methods which can obtain the benefits of a massive analog relay MIMO. Assuming vehicular-to-everything (V2X) as a 6G application, we considered a relay-beam control method that uses the user information (location, velocity, acceleration, and direction of the terminal) contained in intelligent transport systems (ITS) messages called Cooperative Awareness Message (CAM). Simulation results show that the proposed method si...
Source: Sensors - Category: Biotechnology Authors: Tags: Article Source Type: research