Spectrum efficiency of Nakagami-m fading channels for SISO system in the presence of Adjacent Channel Interference for various adaptation policies

In a high-capacity mobile radio system, reduction of Adjacent Chennel Interference (ACI) can be the most important advantage. Very recent researches showed that ACI can seriously degrade the overall capacity. Here, we consider a Nakagami fading channel and the impact of ACI on Spectral Efficiency. The Probability Density Function (PDF) of Singal-to-Interference Ratio (SIR) for Single Input Single Output (SISO) model are derived. It is then applied to different adaptation policies like Optimal Power and Rate Adaptation (OPRA), Optimal Rate Adaptation (ORA) policies and spectral efficiency (capacity per unit bandwidth) will be derived for each of them. These results are then compared and the impact of ACI on the system is studied.