On downstream coax framing in EPON protocol over coax (EPoC)

Abstract

In this short paper, we propose three different framing approaches for downstream transmissions in the coax segment of EPON Protocol over Coax (EPoC), based on how subcarriers in an orthogonal frequency division multiplexed (OFDM) symbol are modulated. We analyze the merits and demerits of each approach, and then compare them based on their control overheads and the maximum average data transmission rates each of them can achieve.