Erlang capacity analysis with imperfection power control and overlay of multiclass CDMA on TDMA system

This paper presents the Erlang capacity analysis in blocking probability equation of CDMA. The Imperfection in reverse link is due to the power control in multiclass transmission service to users and the overlay of TDMA system. Here we use Gaussian and Lognormal models to estimate the Erlang. The Imperfection in power control will be modeled as a Lognormal random variable. The standard deviation of this variable depends on the mobile velocity the branch number of receiver, and the measured power between mobile communicating and base station. The overlay of TDMA system used in this case is base on the GSM standard. The numerical results show that the Erlang capacity decrease when we use overlay of spectrum frequency and imperfect power control on system.