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In this paper, we study the degrees of freedom (DoF) of the asymmetric multi-input-multi-output interference broadcast channel (MIMO-IBC). By introducing a notion of connection pattern chain, we generalize the genie chain proposed in [11]…

Information Theory · Computer Science 2013-10-29 Tingting Liu , Chenyang Yang

Co-channel interference (CCI) is a performance limiting factor in molecular communication (MC) systems with shared medium. Interference alignment (IA) is a promising scheme to mitigate CCI in traditional communication systems. Due to the…

Information Theory · Computer Science 2022-06-28 Maryam Farahnak-Ghazani , Mahtab Mirmohseni , Masoumeh Nasiri-Kenari

An integrated access and backhaul (IAB) network architecture can enable flexible and fast deployment of next-generation cellular networks. However, mutual interference between access and backhaul links, small inter-site distance and spatial…

Signal Processing · Electrical Eng. & Systems 2019-07-29 Abdurrahman Fouda , Ahmed S. Ibrahim , Ismail Guvenc , Monisha Ghosh

In this paper, we address inter-beam inter-cell interference mitigation in 5G networks that employ millimeter-wave (mmWave), beamforming and non-orthogonal multiple access (NOMA) techniques. Those techniques play a key role in improving…

Networking and Internet Architecture · Computer Science 2021-03-10 Medhat Elsayed , Kevin Shimotakahara , Melike Erol-Kantarci

This paper investigates how to use a metaheuristic based technique, namely Particle Swarm Optimization (PSO), in carrying out of Interference Alignment (IA) for $K$-User MIMO Interference Channel (IC). Despite its increasing popularity,…

Signal Processing · Electrical Eng. & Systems 2018-06-08 Lysa AIT Messaoud , Fatiha Merazka

We introduce an opportunistic interference mitigation (OIM) protocol, where a user scheduling strategy is utilized in $K$-cell uplink networks with time-invariant channel coefficients and base stations (BSs) having $M$ antennas. Each BS…

Information Theory · Computer Science 2016-11-15 Bang Chul Jung , Dohyung Park , Won-Yong Shin

This paper introduces an interference-free multi-stream transmission architecture leveraging stacked intelligent metasurfaces (SIMs), from a new perspective of interference exploitation. Unlike traditional interference exploitation…

Signal Processing · Electrical Eng. & Systems 2026-01-28 Hetong Wang , Yashuai Cao , Tiejun Lv , Jintao Wang , Ni Wei , Jiancheng An , Chau Yuen

In this work we investigate the network MIMO techniques of interference alignment (IA) and fully adaptive joint transmission coordinated multipoint (CoMP) in an indoor very small cell environment. Our focus is on the overheads in a system…

Information Theory · Computer Science 2014-03-18 Per Zetterberg

The \emph{degrees of freedom} (DoF) of the 3-user multiple-input multiple-output (MIMO) interference channel (IC) with full channel state information (CSI) and constant channel coefficients are characterized when linear filters are employed…

Information Theory · Computer Science 2014-08-01 Marc Torrellas , Adrian Agustin , Josep Vidal , Olga Muñoz

We consider interference alignment (IA) over K-user Gaussian MIMO interference channel (MIMO-IC) when the SNR is not asymptotically high. We introduce a generalization of IA which enables receive diversity inside the interference-free…

Information Theory · Computer Science 2010-06-24 Maxime Guillaud

Our demo aims at proving the concept of a recent proposed interference management scheme that reduces the inter-cell interference in downlink without complex coordination, known as non-classic interference alignment (IA) scheme. We assume a…

Information Theory · Computer Science 2015-11-05 Yasser Fadlallah , Leonardo S. Cardoso , Jean-Marie Gorce

An interference management problem among multiple overlapped random access networks (RANs) is investigated, each of which operates with slotted ALOHA protocol. Assuming that access points and users have multiple antennas, a novel…

Information Theory · Computer Science 2016-11-17 Hu Jin , Sang-Woon Jeon , Bang Chul Jung

We study the distributed optimization of transmit strategies in a multiple-input, single-output (MISO) interference channel (IFC). Existing distributed algorithms rely on stricly synchronized update steps by the individual users. They…

Information Theory · Computer Science 2015-06-19 Stefan Wesemann , Gerhard Fettweis

We show that the maximization of the sum degrees-of-freedom for the static flat-fading multiple-input multiple-output (MIMO) interference channel is equivalent to a rank constrained rank minimization problem (RCRM), when the signal spaces…

Information Theory · Computer Science 2015-03-17 Dimitris S. Papailiopoulos , Alexandros G. Dimakis

The degrees-of-freedom (DoF) of the multi-antenna three-way channel (3WC) with an intermittent node is studied. Special attention is given to the impact of adaptation. A nonadaptive transmission scheme based on interference alignment,…

Information Theory · Computer Science 2017-01-30 Anas Chaaban , Aydin Sezgin , Mohamed-Slim Alouini

Nowadays, providing higher data rate is a momentous goal for wireless communications systems. Interference is one of the important obstacles to reach this purpose. Interference alignment is a management technique that align interference…

Information Theory · Computer Science 2017-04-12 Siavash Mollaebrahim , Pouya Ghari , Mohammad Sadegh Fazel , Muhammad Ali Imran

In this work, we study the impact of having only incomplete channel state information at the transmitters (CSIT) over the feasibility of interference alignment (IA) in a K-user MIMO interference channel (IC). Incompleteness of CSIT refers…

Information Theory · Computer Science 2014-04-25 Paul de Kerret , David Gesbert

In this paper, we study the number of different interference alignment (IA) solutions in a K-user multiple-input multiple-output (MIMO) interference channel, when the alignment is performed via beamforming and no symbol extensions are…

Information Theory · Computer Science 2014-05-30 Óscar González , Carlos Beltrán , Ignacio Santamaría

This is an extended journal version of the conference paper published in ISIT 2025; submitted to IEEE Transactions on Communications (TCOM). Integrating coded caching (CC) into multiple-input multiple-output (MIMO) communications…

Information Theory · Computer Science 2026-03-20 Mohammad NaseriTehrani , MohammadJavad Salehi , Antti Tölli

A constant K-user interference channel in which the users are not symbol-synchronous is considered. It is shown that the asynchronism among the users facilitates aligning interfering signals at each receiver node while it does not affect…

Information Theory · Computer Science 2015-03-17 Mehdi Torbatian , Hossein Najafi , Mohamed Oussama Damen
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