[Zurück]

R. Nissel, M. Rupp:
"Pruned DFT Spread FBMC: Low PAPR, Low Latency, High Spectral Efficiency";
IEEE Transactions on Communications, 66 (2018), 10; S. 4811 - 4825.

We propose a novel modulation scheme which combines the advantages of Filter Bank Multi-Carrier (FBMC)-Offset Quadrature Amplitude Modulation (OQAM) and Single Carrier-Frequency-Division Multiple Access (SC-FDMA). On top of a conventional FBMC system, we develop a novel precoding method based on a pruned Discrete Fourier Transform (DFT) in combination with one-tap scaling. The proposed technique has the same peak-to-average power ratio as SC-FDMA but does not require a cyclic-prefix and has much lower out-of-band emissions. Furthermore, our method restores complex orthogonality and the ramp-up and ramp-down period of FBMC is dramatically decreased, allowing low latency transmissions. Compared to pure SC-FDMA the computational complexity of our scheme is only two times higher. Simulations over doubly-selective channels validate our claims, further supported by a downloadable MATLAB code. Note that pruned DFT spread FBMC can equivalently be interpreted as a modified SC-FDMA transmission scheme. In particular, the requirements on the prototype filter are less strict than in conventional FBMC systems.

We propose a novel modulation scheme which combines the advantages of Filter Bank Multi-Carrier (FBMC)-Offset Quadrature Amplitude Modulation (OQAM) and Single Carrier-Frequency-Division Multiple Access (SC-FDMA). On top of a conventional FBMC system, we develop a novel precoding method based on a pruned Discrete Fourier Transform (DFT) in combination with one-tap scaling. The proposed technique has the same peak-to-average power ratio as SC-FDMA but does not require a cyclic-prefix and has much lower out-of-band emissions. Furthermore, our method restores complex orthogonality and the ramp-up and ramp-down period of FBMC is dramatically decreased, allowing low latency transmissions. Compared to pure SC-FDMA the computational complexity of our scheme is only two times higher. Simulations over doubly-selective channels validate our claims, further supported by a downloadable MATLAB code. Note that pruned DFT spread FBMC can equivalently be interpreted as a modified SC-FDMA transmission scheme. In particular, the requirements on the prototype filter are less strict than in conventional FBMC systems.

FBMC, OQAM, DFT-s-OFDM, windowed OFDM, 5G

http://dx.doi.org/10.1109/TCOMM.2018.2837130

Projektleitung Stefan Schwarz:
Zuverlässige Drahtlose Konnektivität für eine Gesellschaft in Bewegung