LAYERED POWER ALLOCATION IN MIMONOMA SYSTEM WITH MULTIPLE USERS

In next-generation wireless networks, the Combination of Multiple Input Multiple Output (MIMO) and Non-Orthogonal Multiple Access (NOMA) are used as a key technology for improving the achievable rate. In MIMO-NOMA system power allocation is enhanced by the proposed Layered Particle Swarm Optimization Algorithm (LPSO) by allocate the power to different layers of users in the system. The proposed algorithm satisfying the system maximum power requirement for allowing multiple users with better quality of service (QOS) constraints. The objective function is used in an optimal way for user priority in the proposed LPSO algorithm. The output response parameters spectral power, energy, achievable rate, and Bit Error Rate (BER) are considered in simulated results for analyzing the performance of the LPSO algorithm. The power distribution is carried in a layered manner in the system it is observed that significant improvement in Spectral Power, Energy, Bit Error Rate is 108.587dB, 12.5154dB, 0.000717 and enhanced achievable rate 76.587 Mbps with multiple users respectively.