Hamming Code Performance

[realbaltalyus]

Hi Everybody,
I need confirmation check in my project
I used a hamming code structure by using matlab,
the scenario
random data
hamming(7,4), (15,11), (31,26) Coder
qpsk modulator
awgn channel
qpsk demodulator
hamming(7,4), (15,11), (31,26) Decoder
I confused with the results @SNR 10 dB Hamming(7,4) is BER 0
@SNR 13 Hamming(15,11) BER 0 and @SNR 16 db Hamming(31,26) 0
r.s.p.t theory and previous works my works order in contrast.
Where I am wrong?
Please, help me.

 

[zorro]

Hi realbaltalyus,

What you say is not very clear for me.
Please tell:
- how do you get results (Monte Carlo?). Please give details.
- what BER do you get at lower SNRs?
Regards

Z

 

[realbaltalyus]

Hi Zorro,
First of all, thanks for your interest
Yes, you are right, here is a lot infos, I also make Monte Carlo
Hamming(7,4) Snr=9dB BER Ratio=0
Hamming(15,11) Snr=9dB BER Ratio=0
Hamming(31,26) Snr=9dB BER Ratio=0
The below results from matlab bertool function,
I wonder what is the difference with my work, By adding n-k we make a better results but my observation is more or less same.

 

[zorro]

Hi realbaltalyus,

Sorry, there is something I still don't understand:
If you call Snr the ratio Eb/No (i guess so), the figure shows, for 9 dB, something like 5e-7, 1e-6, and 1e-5 for (31,26), (15,11) and (7,4) codes respectively.
Where is BER Ratio=0?

P.S.: Now I note that in your previous post the values are different. Can you clarify?
Regards

Z