Alternating Radiation Patterns to Overcome Angle-of-Arrival Uncertainty Articles uri icon

publication date

  • February 2010

start page

  • 236

end page

  • 242

issue

  • 1

volume

  • 52

international standard serial number (ISSN)

  • 1045-9243

electronic international standard serial number (EISSN)

  • 1558-4143

abstract

  • This work aims to show that the use of different radiation patterns within the same antenna array in multiple-input multiple-output systems is beneficial in scenarios where there is uncertainty on the angle of
    arrival of the desired signal. We propose a completely planar design,
    based on patch antennas, and we deploy two different types of antennas
    with opposite radiation patterns (broadside and monopole-like). With
    this scheme, we guarantee a higher minimum of spectral efficiency values
    and better averaged performance than is obtained in configurations with
    equal radiation patterns. We also show that our strategy is the best
    option for any angle of arrival when the spatial diversity is limited by
    the number of elements and the distance between radiating elements is
    small, which is a common limitation in relatively small terminals.