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

By: Krishna Sankar

Krishna Sankar — Thu, 26 May 2011 00:34:40 +0000

@Sam: Yes, the article is @ http://www.dsplog.com/2008/07/08/compare-bpsk-qpsk-4pam-16qam-16psk-64qam-32psk/

By: Sam

Sam — Thu, 28 Apr 2011 05:30:57 +0000

Hi Krishna,

In the end of this tutorial you tell that “in the next post we will discuss the performance of various modulation schemes on the capacity vs bit error ratio curve”. Have you written a post on that? If not I am needling help to calculate the capacity of the AWGN channel for various modulation schemes like M-PSK and M-QAM. Can you tell me how to calculate that?

Thanks in advance.

By: Jack

Jack — Fri, 22 Oct 2010 03:51:31 +0000

Sir,why the SNR is related with the received bandwidth?

By: ule

ule — Wed, 18 Aug 2010 12:11:51 +0000

hi krishina this is very helpfull blog
thank you

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.