Degrees of Freedom of 2-Tier Networks Without Channel State Information at the Transmitter Articles uri icon

publication date

  • February 2019

start page

  • 382

end page

  • 386

issue

  • 2

volume

  • 26

International Standard Serial Number (ISSN)

  • 1070-9908

Electronic International Standard Serial Number (EISSN)

  • 1558-2361

abstract

  • We characterize the degrees of freedom (DoF) of the two-tier heterogeneous networks without channel state information at the transmitters or cooperation among transmitters. We consider conventional transmitters while the users are equipped with a multimode receiver. In contrast to previous works focused on two-tier networks, the derived DoF consider the management of the intracell, the intercell, and intertier interference. The derived hounds define the DoF region for any two-tier network. Furthermore, these hounds are achievable by combining blind interference alignment schemes properly.

keywords

  • degrees of freedom; 2-tier networks; blind interference alignment; multi-mode receivers; blind interference alignment