Timeline for Bandlimiting and OFDM spectrum - what is considered "bandlimited"?
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
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| Aug 17, 2018 at 17:11 | comment | added | Marcus Müller | exactly! but regulation will tell you which bandwidth you can occupy with a given spectral power density, and doesn't care about whether that is an actually occupied subcarrier or the added up sidelobes of all the occupied carriers :) | |
| Aug 17, 2018 at 17:02 | comment | added | user520823 | of course, I share that opinion...practically, you can't go down to $- \inf$ in dB sense. However, again, for standard signals/waveform (if you prefer) as per the standard and regulatory bodies, you need to keep the sidelobes as specified by regulations per se. | |
| Aug 17, 2018 at 16:59 | comment | added | Marcus Müller | well, you can't arbitrarily suppress sidelobes in an OFDM system without losing orthogonality! | |
| Aug 17, 2018 at 16:57 | comment | added | user520823 | You do know "bandlimiting" for the considered "standard" signals in some sense, e.g., LTE 20 MHz as a standard, which means not only your "data" bandwidth but also the sidelobes should be suppressed to the desired limits as specified by the standard. | |
| Aug 17, 2018 at 16:53 | comment | added | Marcus Müller | exactly! But that's just the "data" bandwidth, not the bandlimiting in the spectrum sense | |
| Aug 17, 2018 at 16:52 | comment | added | user520823 | well, for some standards, you need to occupy the only specified bandwidth... This formula gives you at least the "inband" or "data" bandwidth | |
| Aug 17, 2018 at 16:50 | history | edited | user520823 | CC BY-SA 4.0 |
added 259 characters in body
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| Aug 17, 2018 at 16:50 | review | First posts | |||
| Aug 17, 2018 at 19:20 | |||||
| Aug 17, 2018 at 16:50 | comment | added | Marcus Müller | That would neglect the side lobes and hence is only of very limited use! | |
| Aug 17, 2018 at 16:48 | history | answered | user520823 | CC BY-SA 4.0 |