The Impact of Scheduling on Edge Windowing

The recently proposed edge windowing technique provides a new degree of freedom between spectral efficient sidelobe suppression and controllable inter-symbol-interference (ISI) for orthogonal frequency division multiplexing (OFDM) based systems. By combining the introduced degree of freedom of edge windowing and the dependency of the channel dispersive characteristics to the distance between transmitter and receiver, ISI can be eliminated. Therefore, scheduling strategies becomes critically important for edge windowing in multiple accessing environment. In this paper, edge windowing technique is investigated along with different scheduling strategies; random scheduling, ranging based scheduling, and root mean square (RMS) delay spread based scheduling. Considering these scheduling strategies with the channel and edge windowing parameters, the performance metrics of sidelobe suppression, average error vector magnitude (EVM) on each subcarrier, and the worst case statistical characteristics of EVM are evaluated.