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EVM Reduction in Digital Mobile Fronthaul by Sample Bits Interleaving and Uneven PAM4

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Abstract

We propose a digital MFH system exploiting sample bits interleaving and uneven PAM4. Digitized LTE-A signal transmission is experimentally demonstrated via 25Gbps fiber link. The results indicate that, ~13dB EVM reduction can be achieved, compared with evenly-spaced PAM4.

© 2017 Optical Society of America

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