Downlink radio resource allocation with Carrier Aggregation in MIMO LTE-advanced systems

Pei Ling Tsai, Ching-Ju Lin, Wen Tsuen Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

Long Term Evolution-Advanced (LTE-A) networks exploit the Carrier Aggregation (CA) technique to achieve a higher data rate by allowing user equipments (UEs) to simultaneously aggregate multiple component carriers (CCs). Moreover, MIMO technologies have become increasingly mature and been adopted as a default choice of the 4G standards. However, most of existing studies on resource allocation with carrier aggregation do not consider the MIMO capability of UEs. In this paper, we address the spectrum resource allocation problem with consideration of UEs' MIMO capability as well as modulation and coding schemes (MCSs) selection in carrier aggregation based LTE-A systems. We formulate the problem under both backlogged and finite queue traffic models as an optimization model, and prove its NP-hardness. As a result, a 1/2-approximation algorithm is proposed to find a suboptimal solution of resource allocation. Simulation results show that the proposed algorithm outperforms the existing schemes, and performs fairly close to the optimal solution under the small-scale scenarios.

Original languageEnglish
Title of host publication2014 IEEE International Conference on Communications, ICC 2014
PublisherIEEE Computer Society
Pages2332-2337
Number of pages6
ISBN (Print)9781479920037
DOIs
StatePublished - 1 Jan 2014
Event2014 1st IEEE International Conference on Communications, ICC 2014 - Sydney, NSW, Australia
Duration: 10 Jun 201414 Jun 2014

Publication series

Name2014 IEEE International Conference on Communications, ICC 2014

Conference

Conference2014 1st IEEE International Conference on Communications, ICC 2014
CountryAustralia
CitySydney, NSW
Period10/06/1414/06/14

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    Tsai, P. L., Lin, C-J., & Chen, W. T. (2014). Downlink radio resource allocation with Carrier Aggregation in MIMO LTE-advanced systems. In 2014 IEEE International Conference on Communications, ICC 2014 (pp. 2332-2337). [6883671] (2014 IEEE International Conference on Communications, ICC 2014). IEEE Computer Society. https://doi.org/10.1109/ICC.2014.6883671