Photonics-assisted 320 GHz THz-band 50 Gbit/s Signal Outdoor Wireless Communication over 850 Meters

Abstract

We have experimentally demonstrated, for the first time, a single-channel 50 Gbit/s net rate THz-band transmission over an 850 m wireless link, which also creates the longest wireless distance and largest distance-rate product for a photonic THz-wireless transmission in the world.

Single-channel 240-Gbit/s sub-THz wireless communications using ultra-low phase noise receiver

“…To increase the data rate within regulated/limited frequency bandwidths, multi-level signal modulation techniques such as Quadrature Phase Shift Keying (QPSK), 8PSK, 16 quadrature amplitude modulation (QAM), 32QAM, and 64QAM have been increasingly adopted in the recent studies on sub-THz and THz communications systems. In addition, due to the rapid advancements in the communication test and measurement technologies, such as arbitrary waveform generators (AWGs), and real-time oscilloscopes (RTOs), digital signal processing (DSP) for the demodulation of signals in the receiver can be performed on-line, rather than relying on off-line DSP based on original algorithms [7][8][9][10][11][12][13]. The on-line (or quasi-real time) DSP is invaluable for accurately determining physical parameters of components and equipment that limit data rates in both transmitters and receivers, ultimately achieving the maximum data rate.…”