Low-Complexity Modem Design for GFDM

 Low-Complexity Modem Design for GFDM

Due to Its attractive properties, generalized frequency Division nmultiplexing(GFDM) is recently being discussed asacan-d idate waveform for the fifth generation of wireless scommunica-tionsystems(5G).GFDM is introduced as ageneralized form of the Widely used orthogonal frequency division multiplexing(OFD M) modulation scheme and since it uses only one cyclic prefix (CP) for a group of symbols rather than a CP per symbol, it is more bandwidth efficient than OFDM. In this paper, we propose novel Modem structures for GFDM by taking advantage of the particular structure in the modulation matrix. Our proposed transmitter is Based on modulation matrix sparsification through application of Fast Fouriertransform(FFT) to reduce the implementationcom-plexity.