Paper - Maximizing Upstream Spectral Efficiency

Maximizing Upstream Spectral Efficiency (2024)

By Belal Hamzeh, Ph.D. Vice President, Technology & System Engineering Comcast Robert Lund Principal Engineer, Technology & System Engineering Comcast Jay Zhu Senior Principal Software Engineer, Software Development & Engineering Comcast

In this paper, we introduce the concept of tier based bonding group (TBBG): an approach to improving the upstream received PSD and associated increased receive modulation error ratio (RxMER) by managing the bonding group assignments relative to the offered service tiers, thereby increasing the spectral efficiency of the upstream channels. Simulation and experimental results are presented showing more than 6 decibels (dB) of gain in the PSD and RxMER.

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