Is DOCSIS 3.1 truly great, or is it driven by hype?
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Ranging – Feeling the 2 bpm DOCSIS heartbeat
While working with DOCSIS systems it is important to understand the upstream periodic ranging process. Ranging can be seen as the DOCSIS heartbeat between Cable Modem (CM) and Cable Modem Termination System (CMTS). As many people tend to struggle with the details of this process, the goal of this article is to visualize the periodic ranging process. Lets...
The differences between US DOCSIS and EuroDOCSIS, and will DOCSIS 3.1 eliminate them?
CM-STATUS messaging improved: why and how?
The CM-STATUS feature is of significant value in DOCSIS 3.x networks. However, originally it was designed in a way it was not 100% reliable. A specification addition in March 2014 changed this messaging facility and it was further fine-tuned in August 2014. This blog post provides an overview on why...
OFDM(A) in DOCSIS 3.1: multiplexing, modulation and multiple access?
Like the mobile 4G standard LTE or the terrestrial digital video broadcasting standard DVB-T, the new cable modem standard DOCSIS 3.1 now uses Orthogonal Frequency Division techniques for signal transport. The channel consists of orthogonal subcarriers that will carry the information over the link. More on orthogonal subcarriers in our course...