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Various system tasks like interference coordination, handover decisions,admission control etc. in current cellular networks require precise mid-term(spanning over a few seconds) performance models. Due to channel-dependentscheduling at the base station, these performance models are not simple toobtain. Furthermore, LTE cellular systems are interference-limited, hence, theway interference is modelled is crucial for the accuracy. In this paper wepresent a closed-form analytical performance model for proportional fairscheduling in OFDMA/LTE networks. The model takes into account a precise SINRdistribution into account. We refine our model with respect to uniformmodulation and coding, as applied in LTE networks. Furthermore, the analyticalanalysis is extended also for ultra-dense deployments likely to happen in the5-th generation of cellular networks. The resulting analytical performancemodel is validated by means of simulations considering realistic networkdeployments. Compared with related work, our model demonstrates a significantlyhigher accuracy for long-term throughput estimation.

Throughput Analysis of Proportional Fair Scheduling For Sparse and Ultra-Dense Interference-Limited OFDMA/LTE Networks