5G cellular systems must deliver high data rates, ultralow power consumption and low end-to-end latency. Currently there is considerable interest in the design and performance of new 5G physical layer waveforms. One of the leading candidates is Generalized Frequency Division Multiplexing (GFDM). 5G waveforms are required to support a smooth transition from existing 4G solutions. In this paper the performance of a GFDM waveform is analysed in the context of LTE-A using the 3D 3GPPITU channel model. Results are directly compared with traditional OFDM solutions. Our analysis shows that GFDM achieves comparable Packet Error Rate (PER) and throughput results while introducing additional benefits such as reduced out-of-band radiation which is the key factor for the 5G cognitive applications based on dynamic spectrum access. We conclude that GFDM is a strong candidate for use in future 5G systems.
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