Mobile 14-GHz Bandwidth Fronthaul Link Supporting 128 RF-Chain Signals for 6G Ma-MIMO Beamforming

We demonstrate fronthual links with delay-division-multiplexing 14-GHz bandwidth 64-QAM OFDM for 128 RF-chain signals. The corresponding CPRI-based capacity is 860.16 Gb/s. With I/Q Volterra nonlinear compensation, EVMs can be improved from 7.5% to 6%.