Abstract
Generalized frequency division multiplexing (GFDM) is a generation of the orthogonal frequency division multiplexing (OFDM) and is considered as a candidate for next-generation wireless communications systems, thanks to its several advantages such as adequate and suitable construction, based on circular convolution and sub-symbol structure, low peak-to-average power ratio (PAPR), low out-of-band (OOB) emission, low latency, relaxed requirements of time, frequency synchronization and high data rate. Due to its spectrum efficiency, the GFDM is an excellent mutli-carrier modulation for a wide range of cognitive radio (CR) systems (For example, machine-to-machine communication using CR techniques, the internet of things (IOT), satellite, military, and so on.). The main component that drives the performance of a GFDM system is the prototype filter design. The present work aims to test, on the one hand, the influence of the pulse shaping filter on the performance of the GFDM system in terms of spectral efficiency and OOB emission for different values of the attenuation factor, and on the other hand the impact of the number of sub-carriers on the GFDM spectrum. The simulation results show that GFDM allows considerable OOB reduction and improved spectral efficiency compared to OFDM modulation.
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Ait Bouslam, K., Amadid, J., Iqdour, R., Zeroual, A. (2023). The Pulse-Shaping Filter Influence over the GFDM-Based System. In: Kacprzyk, J., Ezziyyani, M., Balas, V.E. (eds) International Conference on Advanced Intelligent Systems for Sustainable Development. AI2SD 2022. Lecture Notes in Networks and Systems, vol 712. Springer, Cham. https://doi.org/10.1007/978-3-031-35251-5_11
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