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

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

研究成果: Conference contribution同行評審

6 引文 斯高帕斯(Scopus)

摘要

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.

原文English
主出版物標題2014 IEEE International Conference on Communications, ICC 2014
發行者IEEE Computer Society
頁面2332-2337
頁數6
ISBN(列印)9781479920037
DOIs
出版狀態Published - 1 一月 2014
事件2014 1st IEEE International Conference on Communications, ICC 2014 - Sydney, NSW, Australia
持續時間: 10 六月 201414 六月 2014

出版系列

名字2014 IEEE International Conference on Communications, ICC 2014

Conference

Conference2014 1st IEEE International Conference on Communications, ICC 2014
國家/地區Australia
城市Sydney, NSW
期間10/06/1414/06/14

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