Analytical Cell Load Assessment in OFDM Radio Networks

Abstract

Similarly as for UMTS networks [1], an analytical approach is proposed for calculating the OFDM cell load levels without time consuming iterative Monte-Carlo snapshot simulations. This approach is based on a linear approximation of the behavior of the adaptive modulation and coding mechanism of OFDM systems such that load control can be modelled via analytic scaling and continuous traffic distributions instead of discrete user snapshots. We give a numerical example for solving an OFDM site selection problem which shows the feasibility of the proposed approach due to the fast capacity calculations.