• 5G
• NOMA
• UFMC

The actual LTE technology, based on OFDM architecture, does not satisfy the requirements of the 5G communication systems. The advent of Internet of Things (IoT) communications leads to a boundless growth of the number of users. As a consequence, the current orthogonal channel access techniques are not able to manage such a large amount of data. This results in the need to use non-orthogonal channel access techniques. Moreover, since the most of these users will be sensors or objects that are controlled remotely across the network, there is the problem of increasing the battery lifetime of this devices until 5-10 years almost. The OFDM requires a synchronization procedure to keep orthogonality between signals which is computationally heavy and is not energy efficient. New types of waveforms are born in order to fight with these problems. In this thesis, we propose a Universal Filtered Multi-Carrier (UFMC) system by applying it for the first time in a Non-Orthogonal Multiple Access (NOMA) multi user scenario for the future generation of 5G communications. After a brief overview of the most important channel access techniques and the UFMC waveform, we design and implement a NOMA UFMC communication scenario, dwelling upon the successive interference cancellation (SIC) process exploited in the receiver. Then, we evaluate the performance of our system by considering different channels, varying the number of user and the allocated power to each of them. We focus on the two case of perfect and imperfect synchronization, compared with the current OFDMA transmission system. In conclusion, our proposed system provides better results in term of BER and it could be a valid candidate for the 5G communications.