DVB-S2 and Raised Cosine Filter SIMULINK

[Emilio]

Hello, I'm simulating DVB-S2 blocks' chain with SIMULINK Matlab. I'm using DVB-S2 demo already loaded in SIMULINK libraries, I want to add to it a Raised Cosine Filter in transmitting and in receiving, but I have high values of BER, around 0.49 with ANY Es/No values.
What's Wrong?
I'm using those values about Raised Cosine Filter parameters:

Filter Type: Square Root
Group Delay: 2
Roll-off factor: 0.35
Upsampling factor: 8

Please Let me know about this issue.
Thank you so much,
Emilio.

[Emilio]

Post by Emilio
Hello, I'm simulating DVB-S2 blocks' chain with SIMULINK Matlab. I'm using DVB-S2 demo already loaded in SIMULINK libraries, I want to add to it a Raised Cosine Filter in transmitting and in receiving, but I have high values of BER, around 0.49 with ANY Es/No values.
What's Wrong?
Filter Type: Square Root
Group Delay: 2
Roll-off factor: 0.35
Upsampling factor: 8
Please Let me know about this issue.
Thank you so much,
Emilio.

I Solved partially, Because in the LDPC Error Rate calculation block I setted a wrong delay, now 4 is the correct delay introduced by the Raised Cosine Filter. But Anyway, the BER remains too High. I.E. for Es/No = 40 dB I have 2.3e-05 BER.. too high!

If you want I can send you the model file. Pls Contact me.

what's wrong? I would have low BER values.

Please help me.

thanks a lot,

Emilio.

[Luca Barbiero]

Hello Emilio,
I'm facing the same problem right now. Did you ever find a solution for that?!
Regards
Luca

Post by Emilio
Hello, I'm simulating DVB-S2 blocks' chain with SIMULINK Matlab. I'm using DVB-S2 demo already loaded in SIMULINK libraries, I want to add to it a Raised Cosine Filter in transmitting and in receiving, but I have high values of BER, around 0.49 with ANY Es/No values.
What's Wrong?
Filter Type: Square Root
Group Delay: 2
Roll-off factor: 0.35
Upsampling factor: 8
Please Let me know about this issue.
Thank you so much,
Emilio.

[Wesley Souza]

Post by Luca Barbiero
Hello Emilio,
I'm facing the same problem right now. Did you ever find a solution for that?!
Regards
Luca

Post by Emilio
Hello, I'm simulating DVB-S2 blocks' chain with SIMULINK Matlab. I'm using DVB-S2 demo already loaded in SIMULINK libraries, I want to add to it a Raised Cosine Filter in transmitting and in receiving, but I have high values of BER, around 0.49 with ANY Es/No values.
What's Wrong?
Filter Type: Square Root
Group Delay: 2
Roll-off factor: 0.35
Upsampling factor: 8
Please Let me know about this issue.
Thank you so much,
Emilio.

Hello colleagues! I'm facing the same problem too. Did you ever find any solution for that?
Best Regards,
Wesley.