OFDM Archives

20 06, 2024

Broadband Insights

Mia Colabrese2024-11-19T08:49:45-05:00June 20th, 2024|

Hosted by Brady Volpe, Founder of VolpeFirm and Chief Product Officer at OpenVault, and featuring John Downey, DOCSIS Sr. Industry Consultant, this livestream will focuses on cable / broadband hot topics such as: 👉 Reddit Rants and Raves: We'll dive into recent user feedback on Starlink and Google Fiber, straight from Reddit. 👉 CommScope's Big Move: What does their acquisition of Casa's vCMTS mean for the future of our networks? Link to CommScope article: https://www.lightreading.com/cable-technology/commscope-will-ride-one-vcmts-in-wake-of-casa-deal 👉 Low Latency DOCSIS: How this technology is revolutionizing real-time applications and boosting

6 06, 2024

The Error Era: Rethinking Codeword Calculation with OFDM and SC-QAM

Mia Colabrese2024-06-06T13:43:07-04:00June 6th, 2024|

In our DOCSIS networks, accurately calculating uncorrectable codeword errors is essential for monitoring and maintaining network integrity. These errors, which cannot be corrected by the system’s error-correction algorithms, are known as uncorrectable codewords. The frequency and occurrence of uncorrectable codeword errors can signal physical or network impairments that adversely affect a subscriber’s quality of experience (QoE). When the percentage of these errors surpasses 1%, subscribers typically experience noticeable declines in service quality, which may include slower Internet speeds, disruptions to real-time services like voice and gaming, or even

7 05, 2024

Upgrading Your HFC Plant For The Next 5 Years

Mia Colabrese2024-11-12T14:32:59-05:00May 7th, 2024|

Upgrading Your HFC Plant For The Next 5 Years - the how, the why and the when - listen to uur latest episode of Get Your Tech On! Hosted by Brady Volpe, Founder of VolpeFirm and Chief Product Officer at OpenVault, and featuring John Downey, DOCSIS Sr. Industry Consultant, this livestream focuses on the technical aspects you should consider when looking to upgrade your HFC plant to last for the next five years. 85 MHz or 204 MHz or even higher? DAA? And more. We are going to

27 03, 2024

DOCSIS 3.1 understanding capacity calculator

Mia Colabrese2024-03-27T09:05:53-04:00March 27th, 2024|

Embark on an enlightening journey with our latest episode of Get Your Tech On! Hosted by Brady Volpe, Founder of VolpeFirm and Chief Product Officer at OpenVault, and featuring John Downey, DOCSIS Industry Technical Expert, this livestream is a treasure trove for cable and telecom enthusiasts. In this captivating episode, we unravel the complexities of DOCSIS 3.1 capacity issues and explore the best strategies to comprehend and maximize them: Topic Highlights: Estimating OFDM Capacity in DOCSIS 3.1 / 4.0: Discover the intricacies of estimating data capacity on an

26 02, 2024

OFDM Capacity in DOCSIS 3.1 and 4.0

Mia Colabrese2024-02-28T12:54:24-05:00February 26th, 2024|

Estimating OFDM Capacity in DOCSIS 3.1 / 4.0 A Simplified Approach I am often asked how one estimates the data capacity on a OFDM (orthogonal frequency division multiplexing) channel in DOCSIS 3.1 networks. The question is easy, the answer is not. In this article I provide the background behind estimating OFDM data channel capacity, at least what I can do within the confines of a three-page article. I’ll also provide some practical calculations and a link to a Python script which will do the work for you. Please

29 11, 2023

PMA-PNM Connection in DOCSIS 3.1

Mia Colabrese2023-11-30T08:58:56-05:00November 29th, 2023|

DOCSIS 3.1 modems have ushered in a new era of high-speed connectivity. However, ensuring their consistent performance, especially in the face of network impairments, demands a robust strategy. This is where the synergy of the profile management application (PMA) and proactive network maintenance (PNM) becomes invaluable. The twin pillars of optimal network performance 1. The PMA is designed to compensate for RF impairments in OFDM and OFDMA channels—it doesn’t fix the impairments, but goes a long way to work around them. Function: PMA is dedicated to refining the data

23 04, 2021

Dynamic Range Window OFDMA Troubleshooting

Mia Colabrese2021-08-15T11:48:19-04:00April 23rd, 2021|

Dynamic Range Window (DRW) and OFDMA Upstream Troubleshooting. Tips, suggestions and recommendations. Another power hour of cable with Brady Volpe and John Downey CMTS Technical Leader at Cisco. More and more operators are introducing OFDMA into their networks and experiencing a learning curve with its introduction and Dynamic Range Window issues. Find out ways to overcome these issues and ask any questions you may have. The discussion is on all things DOCSIS. Basic recap of Dynamic Range Window also see our previous OFDMA podcast or live stream. Dynamic

23 02, 2021

OFDMA Troubleshooting

Mia Colabrese2021-08-15T16:10:19-04:00February 23rd, 2021|

OFDMA Upstream Troubleshooting. Tips, suggestions and recommendations. Another power hour of cable with Brady Volpe and John Downey CMTS Technical Leader at Cisco. More and more operators are introducing OFDMA into their networks and experiencing a learning curve with its introduction. Find out ways to overcome these issues and ask any questions you may have. The discussion is on all things DOCSIS. OFDMA "UPSTREAM" Troubleshooting: General intro OFMDA Upstream. The A means upstream 50% increase in upstream traffic Noise in return Cable Modems locking up CM locking up

24 11, 2020

OFDM and OFDMA

Mia Colabrese2020-11-25T08:36:22-05:00November 24th, 2020|

OFDM and OFDMA The value added and what it means to my network By now you have heard or have been exposed to orthogonal frequency division multiplexing (OFDM). It was the innovative technology introduced in Data-Over-Cable Service Interface Specifications (DOCSIS) 3.1 to increase the efficiency by which DOCSIS networks can transmit data in the downstream. Additionally, many cable operators are now actively deploying orthogonal frequency division multiple access (OFDMA), which was also introduced in the DOCSIS 3.1 specification in order to increase upstream bandwidth efficiency. So just what

4 10, 2017

Virtual CCAP in the “hic et nunc”

Mia Colabrese2021-08-16T15:27:48-04:00October 4th, 2017|

Virtual CCAP in the "hic et nunc" No that isn't Klingon Happy Friday Everyone. Today is September 29 and this is episode 31 of Get Your Tech On, our show on All Things DOCSIS with a focus on Virtual CCAP today. I'm Brady Volpe, Founder of The Volpe Firm and Nimble This. With us is, John Downey, the flavor of cable. John is also CMTS Technical Leader at Cisco Systems, welcome John. Special guest Asaf Matatyaou, Vice President, Solutions and Product Management, Cable Edge Business at Harmonic. Who