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

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number8694877
Pages (from-to)1236-1239
Number of pages4
JournalIEEE Wireless Communications Letters
Volume8
Issue number4
DOIs
Publication statusPublished - 2019 Aug

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Optimizing Feedback User Selection for Standalone U-LTE Networks with Randomly Delayed CSI'. Together they form a unique fingerprint.

Cite this