Year-round availability statistics for industry-first commercial 40 Gbps E-band wireless channel revealed
ELVA-1 announced the year-round 2019-2020 statistics for availability of 40 Gbps 70/80 GHz radio across a river in the Arctic region.
Commissioned in August 2019, this 40 Gbps E-band wireless channel provides industrial facilities and local residents with broadband Internet access. This installation of E-Band PPC-10G-E-HP / 2+0 radios was jointly with customer’s specialists, who are responsible for the telecommunications.
PPC-10G-E-HP / 2+0 radios operate in the frequency range 70/80 GHz and has two independent 10 Gigabit Ethernet channels. Two PPC-10G-E-HP / 2 + 0 radio bridges with various center frequency and cross-polarization of the signal allows to get 40 Gbps aggregate total bandwidth.
Pavel Vadov, technical director of Edinstvo Ltd., said, “We are pleased with the operation of the radio channel between the Igarka and Priluki sites across Yenisei river. The equipment meets our requirements for the availability of a communication line and has shown itself well when operated in the Arctic Circle. Now we are considering the possibility of increasing the capacity of the radio bridge by 4x more 10GE channels, using similar equipment from DOK for the 40.5-43.5 GHz Q-band spectrum.”
The actual annual availability of the aggregated channel for four transceivers shows compliance with the calculated values according to the line budget calculator. In terms of rain zones according to ITU-R PN.837-1 recommendation, Igarka with a value of 17 mm/h for 0.01% of the annual probability of rainfall is located between the rain zones C (15 mm h) and D (19 mm/h). The projected availability of the channel was confirmed experimentally, occupying an intermediate value between the calculated values for rain zones C (15 mm/h) and D (19 mm/h).
The diagram shows the actual availability of the aggregated channel when operating in the adaptive radio modulation mode, with modulation schemes switching from QAM128 to BPSK. The hardware-controlled mode of adaptive modulation of the PPC-10G-E-HP / 2 + 0 radio bridges ensures the ability of the wireless communication line to maintain a connection at various rain levels by switching from QAM-128 modulation to lower types of signal coding QAM-64, QAM-32 etc. to BPSK. This increases the link budget ratio of the radio by temporarily reducing the data rate. After passing the rain front, the automation restores the nominal values of the 10 Gbps throughput for each transceiver.
Founded in 1993, ELVA -1 has RnD facilities in Estonia. Since 1993 the company has been developing and manufacturing millimeter-wave equipment for the communication and scientific sectors. In the last decade ELVA-1 has focused on the development of high-quality point-to-point communication radios, resulting in the launch of the PPC-10G, the longest-range commercial 10+ Gigabit radio in the world. Company’s website for telecom products is http://tele.elva-1.com.