Non Orthogonal Multiple Access in Cooperative Relay Sharing with Randomly Deployed Users

We have investigated and proposed a cooperative communicating strategy using non-orthogonal multiple access (NOMA) in which the users are randomly deployed. In this technique there are two randomly deployed sources which share or exchange information with their respective destinations parallely over the same range of frequency through a common shared relay. Further in this strategy, after the symbols are received they are transmitted simultaneously in parallel by both the sources with different powers allocated, the relay sends a coded complex signal super-positioned using NOMA-RS to the respective destinations. The most important benefit of NOMA-RS is that same relay can be shared by two sources. Through the mathematical calculations and simulations, we demonstrate the efficiency of the suggested strategy in terms of outage probability of two source and destination pairs.