Generalised approach for evaluation of outage performance in micro- and pico-cellular networks

Outage analysis is one of the primary objectives in the design and operation of the current generations of cellular mobile communications systems, in order to increase spectrum efficiency and meet the quality of service and the grade of service demands. A general and unified semi-analytical approach is presented for the direct evaluation of the outage probability in the presence of L mutually independent co-channel interferers for micro- and pico-cellular mobile radio environments that follow Rice or Nakagami (1960) models. Outage probability is evaluated in a nested mode via the Laguerre numerical integration technique, avoiding the calculation of complex functions. The proposed formulation can be efficiently applied to practical wireless applications with arbitrary statistical characteristics for the modelling parameters, in both the case of an interference-limited environment (no minimum power constraint) and the existence of a minimum power constraint. Comments, comparison with other existing techniques and useful curves are also presented.