The radio frequency network on chip (RFNoC) is proposed as a solution to the network on chip issue. The maximizing of the number of the communication paths is required to increase the aggregate throughput. According to the configuration of the RFNoC and the organization of the repartition of the available spectral resources, the quality of the signal may be influenced. An analysis of the effect of the repartition of the spectral resources on the signal to interference plus noise ratio of the signal exchanged in the radio frequency network on chip is described in the content of this paper, where the final purpose is the optimizing of the overall throughput. When the signal to interference plus noise ratio is significantly deteriorated, some solutions are proposed to improve the quality of the transmissions.