Experimental study on a sub-terahertz single-carrier transmission exceeding 100Gbps using an ultra-wideband transmission system

Abstract

This letter reports on experimental results of high data rate transmissions using a sub-terahertz single-carrier (SC) transmission scheme. One requirement for 6G is achieving a data rate exceeding 100 Gbps. According to Shannon's channel capacity, the data rate is proportional to the transmission-signal bandwidth. Therefore, one approach for achieving the target data rate is to employ a sub-terahertz transmission with an ultrawide bandwidth of over several gigahertz. To verify the feasibility of high data-rate transmission using an ultra-wide bandwidth, a SC transmission system with a carrier frequency of 141.5 GHz is configured and tested in an outdoor line-of-sight environment. The configured system transmits two different wideband signals using orthogonal polarization-division multiplexing. Experimental results show that a single vertical or horizontal polarized transmission with a baud rate of 10 GHz is available for the data rate of 60 Gbps at the long transmission distance of 100 m. Furthermore, the total data rate of 117 Gbps is achieved by multiplexing two orthogonally polarized transmissions.