From: Optimum low complexity filter bank for generalized orthogonal frequency division multiplexing
Parameters | GFDM | GOFDM | OFDM |
---|---|---|---|
General parameters | |||
Number of CP symbols (N cp ) | 64 | 64 | 64 |
Number of CS symbols (N cs ) | 32 | 32 | 16 |
Gaussian window | 32 samples in both sides | 16 samples in both sides | |
Channel impulse response \( \overrightarrow{c}=\left[{c}_0\dots {c}_{N_{cp}-1}\right] \) | c i is complex Gaussian random variable with zero mean and variance of e−i/10 | ||
Filter bank | RRC modulated filter bank roll-off = 0.3 | Optimum tree-structured PR-QMF bank | Not used |
Configuration case 1 | |||
Number of subcarriers (K) | 256 | 256 | 256 |
Number of time slots (M) | 9 | 8 | 1 |
Configuration case 2 | |||
Number of subcarriers (K) | 16 | 16 | 256 |
Number of time slots (M) | 129 | 128 | 1 |
Mapping | 16-QAM | 16-QAM | 16-QAM |