On the Capacity Degradation Due to Coexistence of WCDMA and CDMA2000 Systems

In this paper,we investigate the capacity degradation due to the coexistence of WCDMA and CDMA2000 net-works by system-level Monte Carlo simulation.Both systems are simulated according to the deployment of macro cells,andspeech service is considered.The capacity losses under different carrier spacing and different geographical offset are evalu-ated.Simulation results show that considerable capacity loss is seen when WCDMA is the victim system,while the influ-ence of WCDMA to CDMA2000 is slight.Increasing carrier-to-carrier spacing and decreasing geographical offset lead toless capacity loss and co-locating the base stations of both systems is a preferred solution.