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.
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.
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@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.
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?
@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?
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.
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.
@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.
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!
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?
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/
@caa028 - I got an email for the Starbucks card for the last presentation a couple of weeks ago. I posted a question to Alex about how we are supposed to receive it, but I never got a reply, and I never received the Starbucks gift. I now have another email for today's presentation, but I don't think I should take it too seriously. I suppose it's some sort of humor.
Fanny: an observation would be that CDMA is also orthogonal scheme, but in the time domain, as opposed to OFDM. A very smart multi-channel solution and perhaps the on which makes the most efficient use of the EM spectrum. Could you ellaborate on that for all of us?
just one person's opinion, but i'm able to understand cdma concepts w/out needing powerpoint animations, and in the year 2012 my preference is for cloud based documents viewed in a standards compliant browser, vs. needing to install MS software on whatever computer i'm using to view the docs.
I had been downloading the ppt files and uploading to my google docs account so i could view them from anywhere in the cloud. i was not viewing the ppt files directly in chrome. uploading to google docs allows an optional conversion step. conversion worked for sessions 4 & 5 but 1, 2 & 3 failed. had to download free MS powerpoint viewer to local computer to view ppt for session 1/2/3 but google docs in the cloud is preferred solution.
Again, the ppt for this week's session fails to convert in Google Docs for sessions 1, 2, and 3, but converts for sessions 4 and 5. Can the presenter check what might be different between the failing vs. successfully converting slide decks?
The streaming audio player will appear on this web page when the show starts at 2pm eastern today. Note however that some companies block live audio streams. If when the show starts you don't hear any audio, try refreshing your browser.
Hello, for those of us using alternatives to Microsoft products (e.g. Google Docs in my case), all of the powerpoint docs posted for prior weeks of this continuing education series have converted without severe problems. However, the powerpoint for sessions 1, 2, and 3 of this week's class fails to convert. Sessions 4 and 5 converted ok. Could you please check if you are using any esoteric powerpoint features in the slide decks for sessions 1, 2, & 3, and if they are not essential to the presentation, alter or remove them? Thanks for you consideration...
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Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.