PROJECT TITLE :

Dynamic Decode-and-Forward Based Cooperative NOMA With Spatially Random Users - 2018

ABSTRACT:

Non-orthogonal multiple access (NOMA) could be a promising spectrally-economical multiple access technique for the fifth generation (5G) wireless networks. During this Project, we tend to propose a dynamic decode-and-forward (DDF) based cooperative NOMA scheme for downlink transmission with spatially random users. In DDF-based cooperative NOMA, the base station transmits the superposition of the signals meant for the paired NOMA users. The user closer to the bottom station forwards the signal meant for the so much user as soon as it will successfully decode its own signal and the signal intended for the far user. We consider 2 user pairing ways, namely random and distance-based user pairing, which need one-bit feedback and also the users' distance information, respectively. For each user pairing strategy, we tend to derive the outage probability of the proposed NOMA scheme by using tools from stochastic geometry. Furthermore, based mostly on the obtained outage chance, we tend to derive the diversity order and therefore the total rate of the paired NOMA users. Simulation results validate the analytical results and demonstrate that the proposed DDF-based mostly cooperative NOMA scheme achieves a lower outage likelihood and the next total rate than orthogonal multiple access, conventional NOMA, and cooperative NOMA.