Video with Matthew Gast: The Value of High Quality Radio Components

Video with Matthew Gast: The Value of High Quality Radio Components

By CWNP On 09/06/2011 - 6 Comments

Radio technologies are probably the least understood aspect of Wi-Fi networking. Since I’m not a EE, I spend a good bit of my spare time trying to educate myself on topics like FFT, modulation and coding, radio components and architectures, etc. I’ve found that most online materials are a bit like Goldilocks’ experience…some are too much; others are too little. But if you keep looking, you’ll find one that is just right.

The material that is too light on details leaves you with excess questions. Conversely, the material that is too heavy on details assumes an advanced level of math skill that many of us don’t possess.
Finally, we find the bowl of porridge that is just right for learning (CWNA-level or thereabout). Thanks to Matthew Gast and Aerohive for sharing this video blog, and allowing me to repost. As valuable as written explanations can be, a first-hand visual demonstration/explanation sometimes cures the confusion. So if a picture is worth a thousand words, a motion picture destroys written language all together. :(
Spoiler alert: Matthew works for Aerohive, so you might hear a bit of Aerohive-ness in there… no fear, there’s some juicy RF content that is worth the watch. In the video, Matthew explains basic modulation types as a primer to an excellent explanation of QAM modulation and how high quality radio components can improve data rates and data reliability in a WLAN. He also talks about error vector magnitude (EVM). Now that is a $100 word that will impress your friends.
Matthew is also the king of cool shades. Check out this link before watching the video:

Original Aerohive post here: Tagged with: OFDM, radio, Modulation, QAM, error vector magnitude, Matthew Gast, Aerohive Networks, constellation

6 Responses to Video with Matthew Gast: The Value of High Quality Radio Components

Subscribe by Email
neha sharma Says:
05/28/2018 at 04:05am
I wanna tell you that I am working with Delhi Escorts we provide best call girls in this area. If you want interested to spend more fun time with our call girls for all night to make fun come to our website and book our hot and sexy call girls.
Dwarka Escorts
Delhi Escorts

Judy Anderson Says:
05/23/2018 at 03:14am
buffet near by

Vishal Tyagi Says:
04/24/2018 at 01:41am
If you are unable to delete your binh history permanently and completely so you may have help of this how to delete bing history completely portal which will show you the exact results.

Misael Johnson Says:
04/19/2018 at 13:15pm
Video quality depends on your devices and how you edit it these things matter a lot.The superior writing one of the best way to produce the better quality in no time. I think you should try this.

Michael Ruetz Says:
02/16/2017 at 11:51am
Dear CWNP-Team,
Is this video still available? I would be very (!) interested.
Thx. in advance ...

Howard Higgins Says:
09/06/2011 at 15:02pm
Mathew, that was a great Video describing the basics behind EVM.
I hope in the future you can spend a little time showing what happens to the diagram when errors occur - like amplifier compression or phase errors which both leave distinctive patterns in the I/Q diagram.
EVM is a magnitude that is used in the 802.11 standard as a pass/fail criterion. But there is so much more to it.
As mentioned on the Aerohive blog, you say you left EVM out of the Big book. Any chance you'll be coming out with a new edition of the book?
It was, and is, a great book ! We need more like it.

<< prev - comments page 1 of 1 - next >>

Leave a Reply

Please login or sign-up to add your comment.
Success Stories

I literally just came out of the testing centre having taken the CWDP exam. The certification process opened my mind to different techniques and solutions. This knowledge can only broaden your perspective. Great job, CWNP, you have a great thing going on here.

Read More

Working through the CWNP coursework and certifications helped not only to deepen my technical knowledge and understanding, but also it boosted my confidence. The hard work it took to earn my CWNE has been rewarding in so many ways.

Read More

I want to commend you and all at CWNP for having a great organization. You really 'raise the bar' on knowing Wi-Fi well. I have learned a ton of information that is helping my job experience and personal career goals, because of my CWAP/CWDP/CWSP studies. Kudos to all at CWNP.

Read More