Waveform | TF density | Overlapping factor K | Pulse shape | PPN implementation |
---|---|---|---|---|
General pulse-shaped OFDM | \(\frac {N}{M}\) | Arbitrary K | Arbitrary g tx(t) | General PPN framework |
CP-OFDM | \(\frac {N}{M}\) | K=1 | Rectangular | Downgrades to "add CPP" |
W-OFDM | \(\frac {N}{M}\) | 2>K>1 | Hamming, RC, RRC, etc. | Downgrades to scalar multiplication |
TF-Localized OFDM | \(\frac {N}{M}\) | Typically K≥4 | Orthogonal Gaussian-based function | General PPN Framework |
FBMC/OQAM | 2 | Typically K≥4 | PHYDYAS, IOTA, etc. | With offset signaling \(\frac {TF}{2}\) |