“…Theoretically, it is understandable that the complexity of the proposed system in this work should increase with the increment in the number of operations as compared to conventional NOMA. With the inclusion of IRC, the system becomes more complex due to the nature of the IRC weight matrix calculation, given from (34) and (36). Therefore, in this section, the complexity comparison, in terms of the required number of multiplications, is calculated for WHT-NOMA with IRC, compared to conventional NOMA, and is shown in Table 4 and Figure 22 [34,37,10], where represents the number of sub carriers and K represents the number of UEs performing IRC in the small-cell.…”