Average performance analysis of a link adaptation strategy based on the minimum user rate maximization

In the context of DS-CDMA transmissions, we study the average performance of a link adaptation strategy performed through dynamic rate and power adaptation based on the minimum user information rate maximization subject to a target bit error rate for erroneous frames. Analytical expressions and bounds for the average information rate per user are derived when a Rayleigh fading environment is assumed. When compared to a link adaptation strategy based on the total throughput maximization, simulation results show improved performance, supporting more users in the cell for a wide range of channel conditions.