Coordinated SLNR based Precoding in Large-Scale Heterogeneous Networks

Ikram Boukhedimi, Abla Kammoun, Mohamed-Slim Alouini

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

This work focuses on the downlink of large-scale two-tier heterogeneous networks composed of a macro-cell overlaid by micro-cell networks. Our interest is on the design of coordinated beamforming techniques that allow to mitigate the inter-cell interference. Particularly, we consider the case in which the coordinating base stations (BSs) have imperfect knowledge of the channel state information. Under this setting, we propose a regularized SLNR based precoding design in which the regularization factor is used to allow better resilience with respect to the channel estimation errors. Based on tools from random matrix theory, we provide an analytical analysis of the SINR and SLNR performances. These results are then exploited to propose a proper setting of the regularization factor. Simulation results are finally provided in order to validate our findings and to confirm the performance of the proposed precoding scheme.
Original languageEnglish (US)
Pages (from-to)534-548
Number of pages15
JournalIEEE Journal of Selected Topics in Signal Processing
Volume11
Issue number3
DOIs
StatePublished - Mar 6 2017

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