Optimizing Feedback User Selection for Standalone U-LTE Networks with Randomly Delayed CSI

Hangguan Shan, Taojie Qin, Guanding Yu, Lin X. Cai, Yu Cheng, Tony Q.S. Quek

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

Accurate channel state information (CSI) plays a critical role in channel-aware transmissions. However, in standalone long-term evolution networks in unlicensed spectrum, it is challenging to obtain accurate CSI timely via intermittent and random channel access. In this letter, we propose an optimization framework to achieve the maximum user utility with appropriate user selection for CSI feedback. Specifically, in the proposed framework, the selection of CSI feedback users is optimized together with subchannel pre-allocation for maximizing the proportional fairness utility of users' expected throughput of future channel access, considering the impact of randomly delayed CSI due to channel contentions. Simulation results show the effectiveness of the proposed optimization framework.

原文English
文章編號8694877
頁(從 - 到)1236-1239
頁數4
期刊IEEE Wireless Communications Letters
8
發行號4
DOIs
出版狀態Published - 2019 八月

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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