| Popis: |
Lagrange Vandermonde division multiplexing (LVDM), that generalizes yet outperforms the zero padding orthogonal frequency division multiplexing (ZP-OFDM) while guaranteeing the perfect recovery of the transmitted signal, has been proposed recently as a new waveform. Therein, the transceiver design relies on the signature roots that have been optimized to keep the implementation complexity low where a simple one-tap equalization has been performed in frequency selective channels. While the beyond 5G solutions ought to be designed to overcome the intercarrier interference in high mobility, a new advanced receiver for LVDM that deals with doubly selective channels is needed. We propose two new schemes using time-frequency domain equalization where performance and implementation complexity have been discussed for each. Simulation results show that both schemes drastically boost the performance while keeping the complexity low compared to the state of the art solutions. |
