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).
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
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.
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Noting that we now live in an era of “confusion and ill-conceived stuff,” Ammunition design studio founder Robert Brunner, speaking at Gigaom Roadmap, said that by adding connectivity to everything and its mother, we aren't necessarily doing ourselves any favors, with many ‘things’ just fine in their unconnected state.
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