What does Es/No mean and how does it differ from Eb/No?

[davyzhu]

What's Es/No mean?

Hi all,

I am new to communication region.

We know that Eb/No means "the ratio of the transmitted signal energy per bit to the noise spectrum density".

What's Es/No mean? And what's their difference?

Any suggestions will be appreciated!
Best regards,
Davy

 

[shedeed]

Re: What's Es/No mean?

you are right Eb means the average bit energy.
Es is the symbol energy, recall that in M-Ary modulation techniques a certain symbol bears multiple bits according to the level.

No is the average noise energy _almost all channels are modeled to AWGN. channels
Es/No can be the SNR from the point of view of symbols

 

[paolone1340]

What's Es/No mean?

If You works with a Channel Coding, for example convolutional coding with Rate R=k/n (where k is the number of informative simbols and n is the correspondent coded simbols), then You can write k * Eb = n * Es ==> Es = R * Eb: Es is the amount of energy needed to transimit one coded simbol and Eb is the amount of energy needed to transmit one informative simbol.