Demonstration of D-Band Wireless Transmission Over 30.2 km Distance Based on Photonic-assisted Scheme

A record-breaking 30.2-km ultra-long-haul high-speed wireless transmission at D-band is experimentally demonstrated, achieving a data rate of $4 \mathrm{Gbps} / \lambda$ and a capacity-distance product of 120.8 Gbps $\cdot$ km.