Capacity Evaluation of MIMO Channel with One Leaky Coaxial Cable Used as Two Antennas over Linear-cell Environments

Yafei Hou, Satoshi Tsukamoto, Sha Li, Takeshi Higashino, Kiyoshi Kobayashi, Minoru Okada

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


Leaky coaxial (LCX) cable is widely used in wireless communication systems as antenna especially for a long and narrow area called as linear-cell environments. The general usage of LCX cable is that it can treated as one antenna. To configure a multiple-input and multiple-output (MIMO) system, it requires more than one LCX cable. In this paper, we will propose a simple design that one single LCX cable can be used as two antennas. Therefore, the proposal reduces cost and the spacing requirement and releases the space requirement of MIMO deployment for wireless application over linear-cell environments. We will study the capacity of the proposed LCX-MIMO system using equal power (EP) allocation and water filling (WF) power allocation and compare its capacity with conventional MIMO system using monopole antennas. The capacity results over 2.4GHz band and 5GHz band show that the proposed LCX-MIMO channel has better capacity than that of using monopole antennas over linear-cell environments. Especially, it can achieve more capacity improvement than that of channel using monopole antennas with the simple EP allocation. The throughput experiments over 5GHz also show our proposal can achieve the higher and stable throughput over the radiation coverage of LCX cable.

Original languageEnglish
Article number7574342
JournalIEEE Transactions on Vehicular Technology
Issue number99
Publication statusPublished - 2016
Externally publishedYes


  • Channel capacity
  • Channel measurement
  • Leaky coaxial cable
  • MIMO channel

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Computer Networks and Communications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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