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This paper proposes an analytical model for performance evaluation of Cellular-WLAN Heterogeneous Networks (HetNets) based on Continuous Time Markov Chain (CTMC) for variable-bit-rate (VBR) data services. This model considers system specific overheads and limitations such as limited number of supported modulation and coding scheme (MCS) of each network. Moreover, this model includes the traffic density...
In this paper, we analyse the total network en- ergy efficiency (EE) of cellular-WLAN heterogeneous network (HetNet) that employs cell range expansion (CRE) technique, in order to control the user association to either WLAN or cellular network. To this end, we model the system with OFDM based cellular macro-cells and WiFi access points for a saturated (i.e., full-buffer) downlink scenario, considering...
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