Interference Managementfor WCDMA Systems Using SINR-Based Soft Handover and Smart Antennas

C. H. M. de Lima, E. B. Rodrigues, V. A. de Sousa Jr., F. R. P. Cavalcanti, A. R. Braga

DOI: 10.14209/sbrt.2003.755

Evento: XX Simpósio Brasileiro de Telecomunicações (SBrT2003)

Keywords: WCDMA Soft(er) Handover Hierarchical Cell Structure Smart Antennas

Abstract

This contribution intends to analyze an hierarchical cell structure with a hot spot embedded in a WCDMA macrocellular system. Particular attention is paid to the impact of the introduction of smart antennas in this context. We propose a new approach to attain fair resource distribution in an hierarchical cell structure using a system-level simulation approach. We employ an enhanced SINR-based Soft Handover (SHO) algorithm to take proper decisions, intending suitable resource management between macrocell and microcell layers in order to guarantee predefined QoS requirements. The analysis is evaluated in the reverse direction and utilizes a modified selection combined SHO procedure to attain the performance gains. Smart antennas benefit of interference reduction is also addressed when users are interchanged between different cell layers.

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