ABSTRACT
Recently, it has been proposed that superposition coding with successive interference cancellation could be a realization for non-orthogonal multiple access (NOMA) schemes for beyond 4G networks. A multi-cellular OFDM-NOMA system is equivalent to parallel interfering broadcast channel. After the completion of optimal user selection and power allocation process, sub-bands having more than two number of users are marked for second round of user selection and power allocation process to schedule only two users. This chapter discusses the performance of the proposed algorithms through extensive Monte Carlo simulation. Modern multi-carrier cellular systems, such as LTE and WiMAX, reuse the entire available spectrum in every cell, which gives rise to ICI. ICI plays a dominant role in limiting the potential performance benefits that would have been, otherwise, achieved in the absence or weak interference scenario.
