What would you say is the limit the QAM can go to? 2048 QAM, 4096 QAM, or even 8192 QAM?

@jeanmikhael8905

2 жыл бұрын

I just set it to 52M to avoid confusion and failures

very easy to understand and very useful, thank you.

Thanks for the video. Very informative!

Thanks quik and well explained . in one word : efficient !

GRAN TRABAJO 💯💯

thank you

Hey man, great explanation videos. Keep it up 👍 I was wondering if we can have a multiplexing techniques explanation especially ofdm and ofdma.

@Rfelements

3 жыл бұрын

Thank you! We have bunch of topics in the pipeline but we'll run out eventually - thanks for the input, we will look into it for future episodes.

Great work. Thank you very much for all these episodes. Please I need to know some issues about practical word about IEEE 802.11 n WiFi 54 Mbps: What is the maximum estimated noise floor at user devices that could be achieved, for a line of sight connection? it's -98 dBm to the best of my knowledge !! The same question about Error Vector Magnitude (EVM) in dB? I mean for all these questions the thresholds values? All the best.

@Rfelements

3 жыл бұрын

Thank you! The noise floor is definitely somewhere on that order, but might differ somewhat across different devices. For Commercial applications the -98 dBm is a good reference. The EVM depends also on particular device, but generally 64QAM @ 20 MHz channel requires 25 dB SNR.

@bstanis1237

3 жыл бұрын

​@@RfelementsThank you very much. We staying tuned for more great episodes.

@Rfelements

3 жыл бұрын

you're welcome! :)

Plz explain Antenna factor , gain , impedance and radiation pattern measurement

@Rfelements

3 жыл бұрын

Thanks for the input, we're always looking for new interesting topics to talk about. Just to make sure - what do you mean by antenna factor?

@majithaa4749

3 жыл бұрын

RF elements s.r.o. I’m also not sure about this topic

is the video good, yes. did i learn a thing, yes do i now understand MCS rates, absolutely not

@Rfelements

3 жыл бұрын

maybe we can answer if your question is specific enough..

@rchromatic

2 жыл бұрын

@@Rfelements What is the MCS rates and how it is being calculated? What are the dependencies between MCS rate and all things you have explained in the video? What is the usage of MCS rates?

@Rfelements

2 жыл бұрын

@@rchromatic you don't calculate MCS rates, RF radios typically automatically operate at the highest possible one. For the dependencies explanation, check our other IW videos, for example kzread.info/dash/bejne/noR4sKlqnc3LoZs.html, kzread.info/dash/bejne/e5aJyM6ala3JhZs.html, or kzread.info/dash/bejne/Y4iNuZmNZruYj84.html MCS rate is equivalent to the throughput speed of a wireless link one can achieve..

@rchromatic

2 жыл бұрын

@@Rfelements So the answer is that MCS is a look up index in predefined table of pairs Modulation + Coding Rate. For example when we say MCS == 5 it means that Modulation == 64-QAM and Coding rate is 2/3. Then knowing the number of spatial streams and channel we can "predict" the data rate (is it MCS rate or throughput or channel speed?).

@Rfelements

2 жыл бұрын

@@rchromatic yes, you got it right. It is the maximum possible throughput speed you get from that. The reality is most often below this value, naturally.

Ahh, its like a dish satellite

@Rfelements

2 жыл бұрын

what do you mean?

@jeanmikhael8905

2 жыл бұрын

@@Rfelements The MCS Channeling thing!

@jeanmikhael8905

2 жыл бұрын

@@Rfelements It acts like a satellite dish!

@jeanmikhael8905

2 жыл бұрын

@@Rfelements As u said in ur video!

@jeanmikhael8905

2 жыл бұрын

@@Rfelements Not necessary I describe u!