Transmission Cooperative Strategies for MIMO-OFDM Heterogeneous Networks
Loading...
Date
2015-06
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Altmetrics
Abstract
Mobile traffic in cellular networks is increasing exponentially, mainly due to the use of data intensive services like video. One way to cope with these demands is to reduce the cell-size by deploying small-cells along the coverage area of the current macro-cell system. The deployment of small-cells significantly improves indoor coverage. Nevertheless, as additional spectrum licenses are difficult and expensive to acquire it is expected that the macro and small-cells will coexist under the same spectrum. The coexistence of the two systems results in cross-tier/inter-system interference. In this context, we design several interference alignment based techniques for the downlink of heterogeneous networks, in order to cancel the interference generated from macro-cell at small-cell user terminals. More specifically, in this contribution we design interference alignment methods under different levels of inter-system coordination and the constraint that the performance of macro-cell system is kept close to the case where small-cell system is switched-off. Numerical results demonstrate that the proposed methods achieve close to the optimal performance with low overhead.
Description
Citation
Radioengineering. 2015 vol. 24, č. 2, s. 431-441. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2015/15_02_0431_0441.pdf
http://www.radioeng.cz/fulltexts/2015/15_02_0431_0441.pdf
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en