Breaking spectrum gridlock with cognitive radios: An information theoretic perspective

A Goldsmith, SA Jafar, I Maric… - Proceedings of the …, 2009 - ieeexplore.ieee.org
Cognitive radios hold tremendous promise for increasing spectral efficiency in wireless
systems. This paper surveys the fundamental capacity limits and associated transmission …

Foundations of user-centric cell-free massive MIMO

ÖT Demir, E Björnson… - Foundations and Trends …, 2021 - nowpublishers.com
Imagine a coverage area where each mobile device is communicating with a preferred set of
wireless access points (among many) that are selected based on its needs and cooperate to …

Massive MIMO networks: Spectral, energy, and hardware efficiency

E Björnson, J Hoydis… - Foundations and Trends® …, 2017 - nowpublishers.com
Massive multiple-input multiple-output (MIMO) is one of the most promising technologies for
the next generation of wireless communication networks because it has the potential to …

Interference Alignment and Degrees of Freedom of the -User Interference Channel

VR Cadambe, SA Jafar - IEEE transactions on information …, 2008 - ieeexplore.ieee.org
For the fully connected K user wireless interference channel where the channel coefficients
are time-varying and are drawn from a continuous distribution, the sum capacity is …

NOMA: An information-theoretic perspective

M Vaezi, H Vincent Poor - Multiple access techniques for 5G wireless …, 2019 - Springer
Non-orthogonal multiple access (NOMA) is a potential enabler for the development of 5G
and beyond wireless networks. By allowing multiple users to share the same resource …

Real interference alignment: Exploiting the potential of single antenna systems

AS Motahari, S Oveis-Gharan… - IEEE Transactions …, 2014 - ieeexplore.ieee.org
In this paper, we develop the machinery of real interference alignment. This machinery is
extremely powerful in achieving the sum degrees of freedom (DoF) of single antenna …

Gaussian interference networks: Sum capacity in the low-interference regime and new outer bounds on the capacity region

VS Annapureddy, VV Veeravalli - IEEE Transactions on …, 2009 - ieeexplore.ieee.org
Establishing the capacity region of a Gaussian interference network is an open problem in
information theory. Recent progress on this problem has led to the characterization of the …

A new outer bound and the noisy-interference sum–rate capacity for Gaussian interference channels

X Shang, G Kramer, B Chen - IEEE Transactions on …, 2009 - ieeexplore.ieee.org
A new outer bound on the capacity region of Gaussian interference channels is developed.
The bound combines and improves existing genie-aided methods and is shown to give the …

On the optimality of treating interference as noise

C Geng, N Naderializadeh… - IEEE Transactions on …, 2015 - ieeexplore.ieee.org
It is shown that in the K-user interference channel, if for each user the desired signal strength
is no less than the sum of the strengths of the strongest interference from this user and the …

Ergodic interference alignment

B Nazer, M Gastpar, SA Jafar… - IEEE Transactions on …, 2012 - ieeexplore.ieee.org
This paper develops a new communication strategy, ergodic interference alignment, for the
K-user interference channel with time-varying fading. At any particular time, each receiver …