DESIGN OF 6G COMMUNICATION SYSTEM AT THZ FREQUENCY BANDS

Toward increasing the data rates further, Terahertz (THz) frequency bands (0.1 -10 THz) became the central aspect of sixth-generation (6G) networks that support massive connectivity, low-latency, highly secure communications, data rates [hundreds of gigabytes per second (Gbps)], and denser networks. THz transmission is a complementary wireless technology for high-speed wireless extension of the optical fibers for 6G. The availability of materials for antenna fabrication and feasibility in designing ultra-massive multi-input-multi-output (U-mMIMO) systems motivates one to explore its peak performance at THz frequency bands. In this paper, a multiuser U-mMIMO system was designed with hybrid beamforming features and its performance was tested at 0.142 THz bands for different numbers of base station antennas and modulation orders. Each user had one or more number of independent data streams, and the total number of users considered in the multiuser U-mMIMO system were 4 and 8. The metrics we considered in evaluating the performance were error vector magnitude, antenna array radiation patterns, and equalized symbol constellations. The results of simulations strongly recommend exploring the THz frequency bands for building next-generation wireless systems that satisfy the needs of the near future.