Capacity Loss from Localization Error in MIMO Channel Using Leaky Coaxial Cable

Junjie Zhu, Yafei Hou, Kenta Nagayama, Satoshi Denno

Research output: Contribution to journalArticlepeer-review

Abstract

Leaky coaxial (LCX) cable has been employed as antennas for wireless traffic over many linear-cell scenarios such as railway station, tunnels and shopping malls. In addition, LCX can be used for user localization and wireless power transfer (WPT). Compared with the equal power allocation method, the power allocation method for LCX system using positional information (PI) can improve its capacity with the same level of computational complexity. In this paper, we will investigate the level of capacity loss on the 2.4 GHz and 5 GHz band for the conventional equal power (EP) allocation method, the water-filling (WF) based power allocation, and our proposed low-complexity power allocation method for LCX system with PI. The results show that LCX system with our proposed method using PI can reduce the capacity loss due to localization error than that of others.

Original languageEnglish
Article number9328758
Pages (from-to)15929-15938
Number of pages10
JournalIEEE Access
Volume9
DOIs
Publication statusPublished - 2021

Keywords

  • LCX-MIMO
  • Leaky coaxial cable (LCX)
  • channel capacity
  • positional information
  • power allocation

ASJC Scopus subject areas

  • Computer Science(all)
  • Materials Science(all)
  • Engineering(all)

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