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.
Also, if you can't hear the audio, please note that some companies block live audio streams. If you don't hear any audio, try refreshing your browser. The session will be archived shortly after it ends.
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.
@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.
Using wireless chips and accessories, engineers can now extract data from the unlikeliest of places -- pumps, motors, bridges, conveyors, refineries, cooling towers, parking garages, down-hole drills and just about anything else that can benefit from monitoring.
With strong marketplace demand for qualified engineers across the board that currently outstrips the available supply, there may never be a better time for engineers and project managers to advance their careers and salaries. Whether those moves are successful in the short-term and long-term is likely to depend on how the transition from one job to the next is handled.
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.