Performance Comparison of Multiple Access Techniques for 5G networks and beyond

Abstract

In wireless networks, the rapidly growing demands for wireless services are encountered by the shortage of the existing radio resources. More spectrum is needed not only to accommodate more users, but also to satisfy the demands of new services such as wireless gaming, TV on demand, Self-driving cars and high-speed mobile data. Filter bank multicarrier (FBMC), universal filtered multicarrier (UFMC) and power domain non-orthogonal multiple access (PD-NOMA) have currently get attention because of their higher spectrum efficiency compared to OFDM, and they play an important role in increasing the capacity in future networks. Particularly, FBMC and UFMC is unlike OFDM, they can be eliminate cyclic prefix and reduce out of band emission by using different filters for each subchannels and for sub-band respectively, whereas PD-NOMA accommodate multiple users in the power domain through superposition coding and make them to access the whole spectrum simultaneously, while using successive interference cancellation (SIC) at the receiver side for signal detection. This thesis provide the performance comparison and analyze of FBMC, UFMC and PD-NOMA multiple access techniquesin system-level performance with respect to spectrum efficiency, energy efficiency, bit-error rate, and PAPR. Results indicate that power domain NOMA perform better in spectral efficiency, energy efficiency and PAPR than FBMC and UFMC schemes. The results also reveal that PD-NOMA less perform than FBMC and UFMC in respect of bit error rate. From the results we conclude that the power domain based NOMA is good candidate to 5G network as compared to the FBMC and UFMC with cost of bit error rate.