Resource Mapping Scheme and Subband Filtering Design based on F-OFDM System

Current research on filter design for FilterOrthogonal Frequency Division Multiplexing (F-OFDM) systems primarily focuses on broadband F-OFDM implementations within public network frequency bands, whereas studies on narrowband filter design for power communication systems remain limited. To address this gap, this paper introduces a lowcomplexity filtering technique optimized for narrowband F OFDM systems, which extends the capabilities of conventional F OFDM technology. The proposed filtering scheme employs frequency-domain filtering instead of time-domain filtering, thereby reducing the implementation complexity of the filtering process. Building upon this foundation, a flexible resource mapping scheme is proposed to enhance the reliability of data transmission. Simulation results demonstrate that the proposed filtering implementation process effectively suppresses the out-ofband leakage of the F-OFDM waveform and improves the reliability of F-OFDM systems while reducing the implementation complexity of the filtering process.