DOCSIS Archives

25 10, 2013

DOCSIS Modulation Options and Impacts – Part One

Mia Colabrese2022-01-07T11:29:37-05:00October 25th, 2013|

What’s Next for DOCSIS Modulation Options and Impacts This paper is the second in a series titled “What’s Next for DOCSIS:” (Young, 2012), and outlines the anticipated DOCSIS near, medium, and long term next generation (NG) network specifications; identifies and presents high spectral efficiency (SE) modulation options capable of enabling DOCSIS 3.1/NG network specification compliance; identifies the likely modulation technique winner(s) and why; and finally presents NG network operational, test, and troubleshooting challenges facing network installers and repair technicians. SECTION 2 INTRODUCTION – What is Modulation Anyway? Modulation

17 10, 2013

DOCSIS Pre-Equalization

Mia Colabrese2020-04-04T11:42:09-04:00October 17th, 2013|

DOCSIS Pre-Equalization This paper will first provide a brief primer on DOCSIS to establish a baseline for the document. Next the paper will examine what is DOCSIS pre-equalization. How DOCSIS pre-equalization works and how DOCSIS pre-equalization can be extended. In the greater context of the paper, the reader must consider the implications of the extensions of DOCSIS pre-equalization. In section 5, details will be provided on how DOCSIS pre-equalization can be used to identify plant impairments and locate those impairments to within a few feet. This turns every

13 10, 2013

Solving Problems DOCSIS PNM

Mia Colabrese2021-08-18T09:55:46-04:00October 13th, 2013|

Solving Problems with DOCSIS PNM Solving problems with DOCSIS PNM in the outside plant is one of the most exciting aspects of PNM. If this if the first time your reading on my PNM articles, check out my first and second articles on the PNM application. This is some really cool tech to come to the cable industry. The premise is that we are turning cable modems into troubleshooting devices. So far I've really just introduced the concept, so in this article I will give a real world example that

8 10, 2013

DOCSIS codeword errors – NCTC member exclusive Webinar

Mia Colabrese2013-10-08T16:56:19-04:00October 8th, 2013|

Join us on Thursday, October 10 at 3pm central time for this MUST SEE Webinar on Codeword Errors Codeword Errors - What are they? Why do you care? DOCSIS codeword errors is terminology that you may or may not be familiar with. But no matter which camp you're in it is important to know that monitoring codeword errors will enable you to improve your subscriber's quality of experience. DOCSIS codeword errors are the deciding factor if you have an RF impairment or if you do not have an RF impairment.

3 10, 2013

DOCSIS PNM DEMO SCTE EXPO 2013 CableLabs Booth #1969

Mia Colabrese2020-04-04T09:20:40-04:00October 3rd, 2013|

DOCSIS PNM DEMO SCTE EXPO 2013 - CableLabs Booth #1969 Come See a DEMO of the exciting DOCSIS PNM Technology at this years SCTE Cable Tech Expo in the CableLabs Booth #1969. Brady Volpe will be giving demonstrations. To find out more about PNM you can also attend one of two PNM presentations or watch a brief tutorial overview. "By using PNM as network probes, cable operators can collect device and network parameters. Combining the analysis of the data along with network topology and device location, it is

30 09, 2013

Smart DOCSIS CMTS Upgrade

Mia Colabrese2021-12-14T15:36:26-05:00September 30th, 2013|

Making a DOCSIS CMTS Upgrade? Make sure you have done your homework. With all of the publicity focussed on DOCSIS on DOCSIS 3.1 many cable operators still have existing networks that are running DOCSIS 2.0 or even DOCSIS 1.1. Many conversations arise around what is the best path forward on making a smart DOCSIS CMTS upgrade. Should investments be made in addition DOCSIS CMTSs identical to equipment already installed? This is especially true when there is a lot of existing DOCSIS 1.1 and 2.0 equipment available at rock

12 09, 2013

DOCSIS 3.1: Begin Preparing Now

Mia Colabrese2013-09-12T14:45:51-04:00September 12th, 2013|

DOCSIS 3.1: Begin Preparing Now Posted on September 11, 2013 by Carl Weinschenk-BTR Experts believe that DOCSIS 3.1 is few years off. The specification has not yet been finalized. After that, test and early customer premise equipment (CPE) and corresponding CMTS and CCAP line cards will be sprinkled through systems. The bottom line is that it will be a long time until DOCSIS 3.1 is an element of everyday cable operations. So preparations should start now. The industry has been down this road before. What seems like a long road, with

9 09, 2013

What is DOCSIS PNM?

Mia Colabrese2021-08-17T16:17:19-04:00September 9th, 2013|

What is DOCSIS PNM and How Does it Work? Recently I wrote about DOCSIS PNM technology and a company working on is called Nimble This. In this article I want to highlight a mechanism behind how DOCSIS PNM works. DOCSIS Pre-Equalization DOCSIS PNM begins with a relatively well known DOCSIS feature called DOCSIS pre-equalization. I've previously covered adaptive pre-equalization, but here is a refresher. Starting with DOCSIS 1.1, pre-equaliztion was added to DOCSIS cable modems. It was later improved in the DOCSIS 2.0 standard adding more equalizer taps

22 08, 2013

Troubleshooting Cable Networks

Mia Colabrese2020-04-02T09:57:28-04:00August 22nd, 2013|

CED Presents an Educational Webcast Troubleshooting Cable Networks - Understanding Ingress Impairments Brady Volpe will be a panelist on: "The two-way nature of cable networks is being increasingly exploited for innovative new features and services, including interactive TV applications, video conferencing, data back up, and wireless backhaul (all in addition to high speed data, VoIP, and Internet TV). Growing reliance on the return path highlights the very common problem of upstream cable ingress interferences. MSO's are planning the deployment of DOCSIS 3.1 technology to offer greater downstream/ upstream

6 08, 2013

A Briefer History of CableTV

Mia Colabrese2021-11-29T14:49:22-05:00August 6th, 2013|

A Briefer History of CableTV For those in the know... A briefer history of CableTV provides an abridged version of how we got to where we are now and CableTVs impact on modern-day test equipment. Looking at the history of CableTV, its beginnings were very humble with many taking credit for its first invention. Let us not delve into those disputes, but look towards where CableTV really started to emerge in the mainstream. It was not until 1947, post WWII when TV began to start getting momentum with