A digital communication system transmit data over a telephone link and a maximum S/N at the output of 15 dB at a rate of 1200 bits/sec via a QPSK modem that can operate at speeds of 1200, 2400, or 3600 bits/sec with error probabilities -4 -4 -4 2(10^ ), 4(10^ ), and 8(10 ), respectively. Calculate the bit error probability before and after using the error control coding (i.e. channel coding) scheme. Hint: Consider an error control coding scheme for this problem wherein the triplets 000 and 111 are transmitted when b = 0 and 1, respectively. Can you solve this problem?
If we assume the channel Bandwidth is infinite, what would be a valid formula to get channel capacity provided P= average transmitted power. And No/2 is PSD of white noise
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The best explanation of the topic I've seen on TH-cam. Well done and keep it up! You got yourself a new subscriber
Even though u posted this video in 2016, it has now helped me in 2019. Really good explaination. Thank u
Finally found someone who explains it proper! Thank you, kind Sir.
Thank you for this video, firstly from the book i did not understood but after watching your video this math is like drinking water.
Knowledge still is fresh
Good video. But at 10:50 you are talking about Mega Hertz per second, this is a strange unit.
thanks about this teaching!l think now l understand how to finish my final 😉
Am honored to say thank you sir you really helped me about my research and course work now everything is fine 100%
you are awesome, was banging my head for a good while trying to understand this
A very good and understandable video thank you very much this really help me
thank you very much ! its hard to find exactly what you need on youtube when it comes to uni material ;d but this is exactly what i need :)
A digital communication system transmit data over a telephone link and a
maximum S/N at the output of 15 dB at a rate of 1200 bits/sec via a QPSK modem
that can operate at speeds of 1200, 2400, or 3600 bits/sec with error probabilities -4 -4 -4
2(10^ ), 4(10^ ), and 8(10 ), respectively. Calculate the bit error probability before and after using the error control coding (i.e. channel coding) scheme. Hint: Consider an error control coding scheme for this problem wherein the triplets 000
and 111 are transmitted when b = 0 and 1, respectively.
Can you solve this problem?
If we assume the channel Bandwidth is infinite, what would be a valid formula to get channel capacity provided P= average transmitted power.
And No/2 is PSD of white noise
Good job done
if Bandwidth (300-3200), SNR 20 dB,what is the channel capacity...plz solution me,here what is bandwidth??
Why is the data rate maximum at the M=2 level?
saved me alot of stress, thanks!
thanks......it reduce my doubt .....
thank you
Great video. But sounds like kettle is whistling in background.
Put a band reject filter for that whistling noise
Great vid
great
guys how he get SNRdb = 30 :\ i missed this up
It's just what we've measured the SNR to be.
Assuming the Signal Power is 1,000 times the Noise Power, then the log of 1000 to base 10 is 3. Convert to deciBels gives 30.
Mega symbols per sec might be correct
how did you know that the SNRdb=30 ????
This was a "given" in this particular problem. It was not derived.
Ok ... thank you very much for the vedio and for the answer I hope the best for you
You're great!
nice
But thats a great video
мать лучшая в мире
у меня
у него тоже нечего
i have a math plz sulution me
I hate your primary comment, "as a computer scientist you should quickly see that ... " lols...