High Tolerance against Chirp Induced PAM4 Eye Skewing in DML-based Digital Mobile Fronthaul with 11dB EVM Reduction

摘要

We demonstrate 40Gbps digitized LTE-like signal delivery in low-cost DML-based system. By interleaving sample bits, eye skewing induced issue is addressed. EVM of wireless signal after 20km transmission can be reduced by up to 11dB, keeping comparable with BtB case.