Abstract

A multiple-input multiple-output (MIMO) system is studied to improve the channel capacity in high frequency (HF) communication systems. There has not been any theoretical explanation for the channel capacity improvement by invoking the orthogonal circularly polarized ordinary (O) and extra-ordinary (X) modes inherent in HF skywave propagation, especially when a pair of horizontal antennas with orthogonal linear polarization are used at both transmit and receive sides. This letter reports the formulation of 2{\times }2 MIMO HF near vertical incidence skywave (NVIS) channel matrix elements that can be used to explain capacity improvement in systems employing horizontal linear antennas over that of single-input single-output (SISO) systems. The result suggests that the capacity improvement relies on the diversity phenomenon due to the presence of the O and X waves, which is observable in experiment and simulation of a 7 MHz NVIS link.

Original languageEnglish
Article number8678394
Pages (from-to)1120-1123
Number of pages4
JournalIEEE Wireless Communications Letters
Volume8
Issue number4
DOIs
Publication statusPublished - Aug 2019

Keywords

  • HF
  • MIMO
  • NVIS
  • capacity
  • ionosphere

Fingerprint

Dive into the research topics of 'Capacity of 2 2 MIMO HF NVIS Channels with Linearly Polarized Horizontal Antennas'. Together they form a unique fingerprint.

Cite this