Microcell Hot Spot and Smart Antennas Evaluation in WCDMA Macrocell System
Carlos H. M. Lima, Francisco R. P. Cavalcanti, Vicente A. de Sousa, Emanuel B. Rodrigues
Abstract
The purpose of this contribution is to analyze a hierarchical cell structure with a hot spot embedded in a WCDMA macrocellular system. Particular attention is paid to the impact of introducing smart antennas in this context. A system-level simulation approach is employed, in which we consider two main solutions to address hot-spot traffic: the placement of a microcell antenna or the adoption of smart antenna technology at the macrocell. Relative gains in signal-to-interference ratio (SIR) are then evaluated. Distinct scenarios are defined based on the proportion of users of different service classes. An evaluation of which solution is best suited to each scenario is then conducted.
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