Timeline for Why does raised cosine pulse through Butterworth filter introduce (significant) ISI?
Current License: CC BY-SA 3.0
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| Jul 21, 2017 at 17:00 | history | edited | divB | CC BY-SA 3.0 |
Added xtra info
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| Jul 21, 2017 at 14:44 | comment | added | MBaz |
You can create a raised-cosine pulse (instead of root raised-cosine) by running rcosdesign(beta,30,R,normal). Can you also try setting the rolloff factor beta to 0.25, 0.5, and 0.75? Setting beta=0 means you're actually using a sinc pulse, which is notoriously difficult to get right since it requires a very long duration to maintain orthogonality, and this introduces numerical approximation errors.
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| Jul 21, 2017 at 8:22 | answer | added | Florent | timeline score: 1 | |
| Jul 21, 2017 at 3:43 | history | asked | divB | CC BY-SA 3.0 |