Energieeffizienz des NOMA-Systems
Multi-input multi-out and non-orthogonal multiple access (MIMO-NOMA) internet-of-things (IoT) systems can improve channel capacity and spectrum efficiency distinctly to support the real-time
How effective is Noma?
Within the scope of this study, the efficacy of NOMA is meticulously scrutinized. This evaluation centres on the average sum rate of users and the average energy efficiency. The assessment encompasses various NOMA configurations, including Fully SC-SIC NOMA, Frequency Division NOMA (FD-NOMA), and Frequency Division Multiple Access (FDMA).
How does a Noma system work?
In the NOMA system, multiple users concurrently utilize the same frequency, code, or time slot, with each user being assigned distinct power levels in accordance with the power domain-NOMA principle.
What are the different types of Noma configurations?
The assessment encompasses various NOMA configurations, including Fully SC-SIC NOMA, Frequency Division NOMA (FD-NOMA), and Frequency Division Multiple Access (FDMA). These configurations accommodate diverse multiplexed user scenarios, each with distinct minimum rate requirements on individual sub-channels.
What are the design objects of the Noma system?
Our goal is to use the flexible assistance of IRS to achieve the maximum energy efficiency of the NOMA system. Our design objects are the beam vector design of the base station and the phase matrix design of the IRS. The original problem is highly non-convex.
Does the EE performance of a Noma system deteriorate?
Besides, the EE performance of the proposed NOMA system was shown to deteriorate after the number of clusters at each cell-edge exceeds a certain limit, where similar channel conditions are likely to hinder the NOMA potential.
What is the resource allocation problem in a Noma system?
The resource allocation problem encountered in this NOMA system is known to be non-convex and characterized as NP-hard. Energy efficiency, in this context, represents a trade-off between transmission capacity and power consumption, with the circuit power assumed to be 1 Watt .
