14. Simulation of Two-Tier Heterogeneous Cellular Networks

In this section, two-tier heterogeneous cellular networks are investigated, encompassing eNodeBs on macro sites and femtocell Base Stations (BSs), respectively . Although numerous system level simulation campaigns have been carried out, the utilized system models such as the dual-stripe- and the \(5\times 5\) approach from (3rd Generation Partnership Project (3GPP), 2010), [1] or other customized setups such as (Pateromichelakis et al., International Symposium Personal Indoor and Mobile Radio Communications (PIMRC), 2011), [2], (Capozzi et al., EURASIP J. Wirel. Commun. Netw. 1, 2012), [3], (Ho and Claussen, IEEE International Symposium Personal, Indoor and Mobile Radio Communications (PIMRC), 2007), [4], (Ling et al., IEEE International Conference Microwaves, Communications, Antennas and Electronics Systems (COMCAS), 2009), [5], (Calin et al., IEEE Commun. Mag. 48(1):26–32, 2010), [6], (Lopez-Perez et al., IEEE International Conference Communication Systems (ICCS), 2008), [7] are mostly too specific to systematically investigate the impact of a femtocell enhancement on the existing macro cellular deployment. On the other is commonly evaluated in terms of capacity and cannot directly be transfered to achievable throughput due to highly idealistic setups.