16 QAM Eb/N0 calculations???

Status
Not open for further replies.
R

rkkamath

Newbie level 3
Joined
Apr 9, 2011
Messages
4
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,312
Hi everyone,

I simulated a 16QAM system and got the simulation results of BER(Bit Error rate) and SER(Symbol Error rate). I have to compare BER and SER of my simulation results with the theoretical BER and SER. The problem is I have to find out Eb for that. How do I do this. What do I consider my Eb as????

I can do Eb(average) = ES(average)/4
But for this I need Es(average)....Thanks....
 

Attachments

  • AWR VSS 16QAM BER & SER Example.PNG
    72.5 KB · Views: 240
The average power is equal to the average power of your signal points in 16-QAM. Say, if your I and Q have the scale of 1 and 3 for 16-QAM. Then, the average power is 10. If you are using normalized 16-QAM modulation , then the average power is 1. Hope this helps.
 

In most of the cases for 16 QAM to keep mean zero you consider symbol set {-15 -13 -11 ......11 13 15}. Your average signal energy is 2*{square(15)+square(13)+....+square(1)}/16 . Now you can adjust your noise power according SNR = av. energy / av. noise power.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…