  We experimentally demonstrate a 28-Gbaud 16-QAM self-homodyne digital
radio-over- 33.6km-7-core-fiber system with entropy coding for mobile
fronthaul, achieving error-free carrier aggregation of 330 100-MHz 4096-QAM
5G-new-radio channels and 921 100-MHz QPSK 5G-new-radio channels with
CPRI-equivalent data rate up to 3.73-Tbit/s.
