I appreciate your sharing of knowledge in latest wireless technology.
I'm curerntly a Novice user for 802.11n and have added a few new books to my reference library since your last Class on Wireless Networks; O'Reily-Safari Books: 802.11 Networks The Definitive Guide 2nd Edition, and the more recently published 802.11n Survival Guide by Matthew Gast. Also dounloaded the pdf version of Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications by the IEEE (802.11-2012).
the allocation units are in RBs, so - yes - even though this may be wasteful for some low data rate transmissions, the entire 180 kHz is allocated for some time slot
Some of thsoe settings on my radio transmitters are far more clear now. Even using them as a consumer with laptop wireless was a challenge at guessing the settings.
Fanny, in a previous slide, you mentioned that a Resource Block (RB) of 180 kHz is a whole radio. Is there a maximum power that a RB can transmit? Fo example, for a 40 W eNB covering a 10 MHz BW, if ALL 50 RBs are transmitting then 0.8 W per RB is used. If only 1 RB is used, can it transmit at 40W?
Josip: Found at low freq FFT is useless -- look to waveltes or similar. I did not know "waveltes" existed -- developed similar techniques. An engineers later pointed out the similartities.
I should get a TI CORTEX M3 test unit from Digikey today -- will test expanded capabilities as soon as I convert collection software. Seminar on Micro Dev Kit Choice led to that decision. Will blame John T if it does not work.
Josip: BTW -- that was serious suggestion. I finished development day before Japanese Tsunami. Did not hear news reports and spent a day tracking down bizarred noise bursts -- later calculated delay times and looked at signals -- sure enough it was conincidental. You may need something else above 3KHz -- but works well for Infrasound and long period vibration.
there are some new multimeters made by FLUKE that allow the display to be as far away as 20 feet from the sensing unit, thus allowing the user to be a little out of harms way, if it's being used on high-voltage, etc. works on bluetooth
I'm an instrumentation & control specialist at Turkey point nuclear power plant, we just recently started working with wireless data acquisition and measurement equipment
For those just joining us, please tell us what industry you're in, what wireless applications you're working on, and whether you're working with MIMO or SISO based radio.
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Josip: If you mean detecting of LFN ... I look at 300HZ down to the "seconds per cycle" noise patterns. Those patterns are not unusual for LFN detection. I wrote custom software for freq, detection as FFT etc. don't seem to do much (useful). Similar to wavelets analysis. Packets are passed up to PC for storage in DB and further analysis -- graphing and math analysis etc.
@sara.bavarian - sometimes the audio will be interrupted (stopped) if you click on a link on the page or some other activity. just happended to me. simply refresh your browser
For those just joining us, please tell us what industry you're in, what wireless applications you're working on, and whether you're working with MIMO or SISO based radio.
Researching wireless for possible future use. If used, it would be communictaion (device configuration, real-time communication for motion control, etc). Possibly Wi-Fi or something like Zigbee.
@Gyroman: refresh your browser and see if the audio comes up. You will need to download the PowerPoint slides from the "Today's Slide Deck" link near the top of the chat page.
@cpardo, i'm using Chrome right now and it's OK. The audio will start at the hour. Just the PPT slides will not be viewable, so a reader is needed. or use IE.
@bigchin "Be sure to click 'Today's Slide Deck' under Special Educational Materials above right to download the PowerPoint for today's session. " Is the red, underlined text just above this chat window.
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.
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