Thank you Fanny & Alex.

Thank you Fanny and Alex!

no work on NFC

HW

General environment

General interest

some wireless networking experiments at home

Hi from OR

This was very informative.  Thank you Fanny and Alex.

I am primarily hardware, but I am beginning to work more with software on a day-to-day basis.  

Basically information on general, but also one area springs to mind that is fairly well isolated (no cell reception inside).  

I understand some of the theory behind these, but as far as the schemes themselves, I will definitely need some more time with these.  

What I would like to learn from this are some basic lessons on it, as well as the pitfalls from others who have more experience with this.  

I have not done a wireless network, and no plans to do one at this time, but I have been toying with the idea for awhile and would like to learn more about it.  

Hello all.

Good general overview. The Frequency Spectrum charts are helpful.

I have installed wireless networks -- looking at more for low level data collection.

I am Systems Engineer working on commerical avionics

I am fairly and  do not know nothing about the modulation schemes. I am sure after attending this lecture I will walk away with an abundant information

Hi everyone this is Kamran from Pakistan

Thanks. The Slides Are helpful

Yes

r&d hardware and software

Harsh and in field

Somewhat

Wifi

Planing to.

The slides are very informative and brushed all the wireless topics I have studied in my bachelors degree.... 

Thank you.

Do not use NFC in business.

Networking/Security

All types.

Not much.

Best ways to implementing the newest changes in Wireless Networking.

Yes

Thanks!

Thanks Fanny.

I just listened the first lecture that I missed. Good presentation. Thanks a lot.

Hasrh

Planning

Yes

In answer to your question about each of us, Alex, I'm an electrical engineer, but focus primarily on software. In my job, I'm somewhat concerned about harsh environments, but I'm enjoying getting a broader picutre since that can stimulate free thinking.

A day late, but here nonetheless.

Great presentation too many audio interuptions

Have to pick up the tail end of this presentation

Very good presentation, I wish there was more time alloted.

thank you for a good background.  I see there has been a lot of development since I was in grad school in the early '90s.  I'll be back tomorrow, but probably need to listen at night since the audio won't pass the firewall at work.

Interesting presentation. Be back tomorrow.

thank you for a "lot" of information

both

yes

Good evening - have to use the archived version

THANKS BEback tomorrow

come accross this alot, different routers, dead spots

hardware, software consultant, but hardware is more my line.

building networks, yes

some are familiar, really ned to learn more

We do not use it.

Network administrator

Harsh enviroments lots of CNC machines.

Yes, Wireless set up in warehouse and manufacuring plant.  Interested in controllers and wireless.

Great topic.

Thanks for a GREAT presentation - looking forward to tomorrow!

Nice explanation of  Multipath and Doppler fading - something I think we have all experienced and didn't know why.

Got called to a meeting today - for those who are unaware you can - its really nice to be able to catch up on the archive and slide presentation!

Appreciated the important and sometimes neglected look at guardbanding!

I recall hearing about UMTS and it was supposed to be a big deal, any information on that?

bye bye

I am working on a Telecom/IT Acronym Dictionary. Right now I got 35,000 from an anonymour source and a few from my own. If you are interested in contrinuting, please, send a text to 6162380545 with your e-mail.

I enjoyed hearing about the modem you built - Fanny. I remember a little wireless transmitter I built that was a lot of fun. It is amazing how far we have come!

Alot of information to absorb - I'm looking forward to seeing how this comes together in future presentations.

Thanks everyone. See you tomorrow 2pm eastern for Part II:  What You Need to Know about 802.11

This is great for getting a basic understanding - I really appreciated your explanations of the different protocols!

Thanks again, I can't wait for wireless sensor neworks!

are you going to cover OFDMA in tomorrow's session

e-see you tomorrow.

Cheers to all!

Thank you Fanny and Alex.

I'm looking forward to learning more about Blue Tooth technology.

thank you all!

the guardbands for CDMA and OFDMA channels are comparable

@Fanny.  Thank you.  I will be listening to the rest of the presentations.

Wonderful presentation

@Ran: Guidance to the presenter necessitates interruptions if it cannot be coordinated prior to lecture start, but survey questions and other background observations could be made in the live chat less obtrusively.

@Alex: I appreciate what you are doing to try to keep things moving along, and very much appreciate Digi-Key for presenting this series. No offense intended, and I hope none taken. Our comments are purely intended to maximize the benefit of the presenter's, your, Digi-Key's, and our investment of time.

FANNY: Practically speaking, CDMA and OFDMA have the same comm. channel density?

Thanks for slide show - excellent for clarification!

otoSocpe is Fanny Mlinarsky

luizcosta and everyone else. I appreciate your suggestions. Much of the stuff we do, we do it because it's part of the overall formate. So, we're not ignoring your suggestions when we ask questions, provide instructions,  or queue slides. I wanted to note that because your suggestions are legit but so is our need to keep the format. Maybe the trick is not to consider them interruptions, but consider them housekeeping. One regular radio, you don't get annoyed because they say the call sign every 10 minutes (by law), so why here?

effective ways of dealing with multipath are a number of TX and RX diversity techniquest wich use frequency and phase diversity.

FANNY: Is 'octoScope' you? If so, can you add the question to your answer?

Great presentation as many of the previous have been. Alex, the fewest possible interruptions the better. Thank-you both for making this available.

for longer range outdoor networks, watch some of the emerging standards, such as 802.11ah and 802.15.4g, which we will discuss later this week.

OFDMA is the most efficient, but may be also the most expensive

Thanks!

there will be Bluetooth discussion later in the week along with ZigBee

@Fanny.  Our biggest problem with our wireless connection is range and reliability.  We are connecting two control units (ex. handheld unit to truck or control panel) which is used in many environments from delivery trucks in urban areas to indoors at manufacturing plants.  We also have to keep mind international regulations due to sales world wide. 

My question would be what protocol should we be looking at for longer range for systems that could have multipoints to multipoints but require low power and quick response?

Thank you

Thanks for the presentation!

FANNY: In your opinion, what is the most efficient EM scheme: CDMA, TDMA, GSM, ODMA, etc.?

IMS will be very important for:  enabling voice over LTE (VoLTE) and for prioritizing traffic for mission critical applications.  IMS defines 15 levels of priority.  It is expected to be depoyed by all the major carriers in the next few years.

Thanks for info. Nice slides.

Thanks for the intro. Until tomorrow

For multi path interference, I always suspected phase shift detemination as a process to follow.

Any thoughts?

This lets you know what the radio receives rather than what the test equipment receives.  Sometimes it is possible to incorporate diagnostics softare in the radios performing the test so these radios can report signal strength, association information and roaming conditions.

Yes, Alex: Perhaps the number of real-time survey questions should be limitted to one or two per lecture.

@Alex - I disagree with Mr. E's posting below.  Your guidance may be a bit intrusive, but it is a necessary evil to guide the presenter for our forum so they can tailor what is given for the intent of this forum and the level of our attendees.

thanks for the presentation. Have a nice day.

Thanks Fanny, Alex and all. See you tomorrow.

Fanny, I see the week covers WiFi, ZigBee, 900 MHz, etc... but will there be any Bluetooth discussion?  (Oh yeah - thanks for all the great info today!)

Hi Fanny,

Lots of good information and I hopr that you can provide some refernces or links to elucidate some further research after hours (homework?).

The best way to perform measurements in a factory is to use the actual radios being deployed.

Thank you, see you tomorrow.

Oops! Optimum latency is 10mSec or less

Good intro.  Perhaps this should be two lectures.  I will look closely at the slides.

My area of interest is in minimizing latency for audio communications, as when it exceeds 40 mSec the synching of lipreading cues is lost, and also the "comb filter effect" comes into play

thanks so much!  Very interesting

FANNY: From a wireless perspective, what do you think is the future of IMS as an infrastructure for pervasive telecommunications?

great lecture!

Thanks, Fanny and Alex.  This slide deck will be helpful in the future.

Thank you, Fanny!

How do I get to the chat page ?

What is the significance of the white space technologies and white space part of the spectrum?

Equipment to test coverage includes devices like AirMagnet and others.  No equipment specifically maps multipath, but you can find nulls by looking at signal power. 

Merci beaucoup !

Thanks for the Great Presentation

Thanks!

Great introduction to wireless...A lot of great information.  Very interested in looking further into the more robust wireless protocols.

 FANNY. GREAT LECTURE

Thank you too Alex!

Thanks Fanny. Appreciate it

Thanks

Thank you

thanks

thank you

 Thanks Fanny and Alex

Thanks... Great Presentation

Thanks Fanny!

Thsnks.

thank you!

Very good "Encyclopedia"

Thx Fanny

Thank you Fanny! Good attempt to cover hundreds hours of theory in a single lecture... :)

Thank you, Fanny. Nice presentation.\

See you tomorrow.

Many Thanks!

Thank you Fanny, most excellent stuff.

Good, Thanks

Thank you Fanny.

thank you fanny and alex, I will join you again tomorrow.

thanks

Thanks Fanny

thanks for the ppt

Good presentation Fanny.

Like @Danlafleur, I'm interested in mapping the RF environment within a plant.

Great presentation

Thanks for a great session!

Thanks Fanny

Thanks!

Thank you Fanny.

Thanks Fanny

Thank you Fanny

thank you Fanny.

Fanny, great deck. Any recommendation on resources and book for technical folks but not in wireless area? Thank.

thanks Fanny. great intro covering a wide range of topics

Thank you Fanny

Thanks

Thank you Funny, great presentation.

Alex, Fanny did a great job of preparing a lot of interesting and worthwhile information, but was unable to present it all due to constant interruptions from you. I would rather hear her entire presentation and less interruption. The slides are really good but not completely self-explanatory.

Fanny, thanks for your great presentation and preparation!

Thanks for an interesting presentation

thank you Fanny,

not really working with near-channel

thanks

@fanny, from danlafleur is there a method or test equipment that will sweep through the range of frequencies in a plant and use a mobile unit to map the multipath losses?

I'd answer you, Alan, but I don't want to interrupt Fanny and go off topic :)

On slide 35, the summary of global unlicensed bands, the "Consideration" column for the 433 MHz band states "voice, video, audio and continuous data transmission are not allowed in the US." Why is that so?

On slide 28, are those power limits for unlicensed ISM use?

not efficient though

correct

If the iphone 5 doesn't have NFC I'll be very sad.

good question!

iphone powermat wireless charger also has some communication protocol between the phone piece and the powermat..may be nfc..what do you think?

TI and NXP are a couple of examples of chip vendors.

There are many reference designs from different vendors that are essentially off the shelf.

Depends on the signal strength and antennae

is there an off the shelf chip for nfc?

i mean 4 cm not 40

@gaghu - I think NFC is defined as 4 cm or less.

1cm is too less for some applications .. how about 1.5 inch? ..say 40 cm?

I'd answer you, Alan, but I don't want to interrupt Fanny and go off topic :)

OFF-TOPIC: Can anyone tell me how to directly send a note to a specific participant?

NFC near is less than 1 cm

how near is near for NFC? in inch?

LTE is offered w/100 Mb - what hapenned w/ Google one-giga?

Thanks folks for the acronym help.

@fanny, is there a method or test equipment that will sweep through the range of frequencies in a plant and use a mobile unit to map the multipath losses?

For a direct idea of how Near Field is used by many hundreds of thousands of hearing impaired people, including myself right now as I'm listening to this lecture, check out the Widex Link links starting on this page: 
http://www.widex.pro/en/products/hearingaids/products/series/clear440/

how do you deal with moving location?  example: Delivery trucks in city areas.

@luizcosta - NFC = Near Field Communication

@luizcosta: Near Field Communication - a short distance wireless technology, used for Point-Of-Sale wireless payments and other things