Impact of fading on per-energy capacity in femto-macro environment

Energy efficiency (EE) metric compares performances of wireless communication systems. Per-energy capacity ratio is an energy efficiency (EE) metric. In this paper, it is used to compare the performances of wireless systems in macro-femto environment due to fading. The degradation in the per-energy capacity ratio due to fading is evaluated. The results show that deployment of the femtocells along with macrocells is energy efficient under non-fading and fading conditions. In addition, the degradation in the per-energy capacity is found to be a function of fading ratio in the chosen system, hence pointing to the importance of channel fading type.