OFDM- Article no. 5372

Introduction

Extra Credit

Extra Credit procedures are additional information which is not necessary for troubleshooting but could help explain how some more advanced items work. Some of the concepts and language may be more advanced then you might encounter in your day-to-day work.

Resolution Steps

OFDM

Orthoganal Frequency Division Multiplier is a way of encoding digital data across multiple frequencies. OFDM is the technology behind MOCA and our latest speed upgrade to Gigabit Internet.

You will observe this as a drop down in Merlin.

This is different from DOCSIS 3.0 specifications of using wideband channel spacing and behave differently. The efficiency and redundancy of OFDM vs. FDMA (The Technology behind DOCSIS 3.0) is phenomenal. OFDM allows for a much more efficient use of bandwidth available over any given network.

 

Essentially, by eliminating the space between separate channels, we are able to more efficiently use our equipment to provide superior speeds. If we look at the chart below  we can see the same amount of channels in a comparison of subcarriers.