Two new fixed effort two-stage detection algorithms for Multiple Input Multiple Output (MIMO) systems using orthogonal frequency division multiplexing (OFDM) are proposed, reaching near maximum likelihood (ML) performance with a significantly reduced complexity. For enhancing the data rates in wireless communication systems a higher bandwidth is needed, resulting in a frequency selective channe...

In this paper, we investigate dynamic resource scheduling (i.e., joint user, subchannel, and power scheduling) for downlink multi-channel non-orthogonal multiple access (MC-NOMA) systems over time-varying fading channels. Specifically, address the weighted average sum rate maximization problem with quality-of-service (QoS) constraints. particular, to facilitate fast scheduling, focus on develop...

This work presents a methodology to coarsen subchannel models accelerate largescale Serpent2-SUBCHANFLOW calculations. The method is based on first building fully detailed model and then combining subchannels into larger channels with condensed hydraulic parameters. To quantify the accuracy performance of this scheme, full-core VVER-1000 problem simulated using two types coarsened models, as we...