Array antenna for OAM mode multiplex radio transmission in 150GHz band
256QAM demodulated signal in 100m transmission
NEC: Successful real-time digital OAM / multiplex wireless transmission: Beyond5G / 150GHz, distance 100m
March 10, 2020
NEC: Beyond5G
NEC is working to increase the demand for wireless communications in the 5G / Beyond5G era.
In the 150GHz band, which is expected for large-capacity fixed wireless transmission applications,
OAM (Orbital Angular Momentum) mode multiplexing technology and
Combining polarization multiplexing technology (Note 1)
Real-time digital OAM mode multiplex wireless transmission technology / 100m transmission succeeded for the first time in the world (Note 2).
Previous results: Demonstrated 80GHz band / 40m transmission
NEC has been developing OAM mode multiplex radio transmission technology using electromagnetic wave OAM.
In December 2018, demonstrated 40m transmission using the 80GHz band OAM mode multiplexing technology (Note 3).
Success this time: 150GHz band / 100m transmission succeeded
In this experiment,
Compared to the demonstration experiment in the 80GHz band,
Transmission distance is 2.5 times 100m,
Transmission capacity is doubled by 16 multiplexing including polarization multiplexing,
Fields of use:
NEC will use this technology in the future.
Applies to the ultra-compact microwave communication system “Pasolink”.
For commercialization of Beyond5G,
We aim to use mobile backhaul lines that require large capacity.
the next deployment:
In the future, we will further expand the transmission distance.
Achieved a transmission capacity of 100 Gbps or more by converting the digital signal processing unit to an LSI and expanding the bandwidth to 1 GHz.
Applies to 5G base stations / backhaul circuits and CU (Central Unit) -DU (Distributed Unit) / fronthaul circuits.
Press Release | NEC