Comments on: Bounds on Communication based on Shannon’s capacity

By: Krishna Sankar

Krishna Sankar — Sat, 03 Apr 2010 23:17:53 +0000

@communications_engineer: Am not sure. When talking about throughput (for eg. in wireless lan case etc), we need to account for preamble, media access overheads etc. But, in general the above equation seems to be right

By: communications_engineer

communications_engineer — Sat, 06 Feb 2010 16:13:00 +0000

Hello Krishna, how to plot the throughput against ber?

An un-verifiable source told me that

Is it Throughtput = (1 – BER)*Capacity?

By: Arun kumar

Arun kumar — Tue, 19 Jan 2010 09:10:13 +0000

sir,
Can you please tell me something about outage and ergodic capacity.I am doing project in physical layer network coding with diversity.

By: Asad

Asad — Tue, 29 Dec 2009 08:45:51 +0000

Hi Krishna, I want to ask you whether there is a way to simulate channel capacity. Meaning if i wanted to actually see how much capacity the channel has based on the BER simulation of any system?

By: Krishna Sankar

Krishna Sankar — Sun, 06 Dec 2009 11:09:58 +0000

@donghak: Please check the posts
http://www.dsplog.com/2008/07/08/compare-bpsk-qpsk-4pam-16qam-16psk-64qam-32psk/
http://www.dspdesignline.com/howto/208801783;jsessionid=KQBZX4ZJRFCX0QSNDLRSKHSCJUNN2JVN?pgno=1

I have discussed the M-QAM case, which you can adapt to 64-QAM.

By: donghak

donghak — Wed, 18 Nov 2009 12:51:42 +0000

sir.
I saw your 64QAM matlab code. suprised your ability……
I feel heavy ,not to sove 64QAM SER, BER……..
Please can you post me 64QAM matlab code?

By: carlos

carlos — Fri, 11 Sep 2009 10:49:01 +0000

Nyquist =)