Abstract
This paper proposes a frequency domain implementation method for the filtered multi-tone (FMT) based on fast convolution called FC-FMT, which can adjust the center frequencies flexibly. Aiming at the low spectral efficiency of the FMT, spectral-overlapping in frequency bins is introduced in FC-FMT called Overlapped FC-FMT (O-FMT). We then analyze the relationships between the overlap factor, overlap frequency bins, roll-off factor, and system performance using models and simulations. The simulation results show that O-FMT can be used to simultaneously process multiple waveforms. It also has superiority in meeting a variety of transport requirements, such as computation complexity, spectrum efficiency, and mean squared error, for multiple services due to simple parameters.
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