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The degrees of freedom (DoF) available for communication provides an analytically tractable way to characterize the information-theoretic capacity of interference channels. In this paper, the DoF of a K-user interference channel is studied…

Information Theory · Computer Science 2016-11-15 Aly El Gamal , V. Sreekanth Annapureddy , Venugopal V. Veeravalli

In this work, we explore the potential and optimal use of transmitter cooperation in wireless interference networks with deep fading conditions. We consider a linear interference network with K transmitter-receiver pairs, where each…

Information Theory · Computer Science 2017-12-11 Yasemin Karacora , Tolunay Seyfi , Aly El Gamal

Degrees of freedom (DoF) gains are studied in wireless networks with cooperative transmission under a backhaul load constraint that limits the average number of messages that can be delivered from a centralized controller to base station…

Information Theory · Computer Science 2018-11-27 Meghana Bande , Aly El Gamal , Venugopal V. Veeravalli

Coordinated Multi-Point (CoMP) transmission is an infrastructural enhancement under consideration for next generation wireless networks. In this work, the capacity gain achieved through CoMP transmission is studied in various models of…

Information Theory · Computer Science 2013-10-10 Aly El Gamal , V. Sreekanth Annapureddy , Venugopal V. Veeravalli

Degrees of freedom (DoF) is studied in the downlink of a heterogenous wireless network modeled as a two-layered interference network. The first layer of the interference network is the backhaul layer between macro base stations (MB) and…

Information Theory · Computer Science 2016-09-12 Meghana Bande , Venugopal Veeravalli , Antti Tolli , Markku Juntti

We study information theoretic models of interference networks that consist of K Base Station (BS) - Mobile Terminal (MT) pairs. Each BS is connected to the MT carrying the same index as well as L following MTs. We fix the value of L and…

Information Theory · Computer Science 2019-11-19 Manik Singhal , Tolunay Seyfi , Aly El Gamal

We study the problem of managing interference in linear networks, with backhaul constraints that admit centralized allocation of messages to transmitters through the cloud. Our setting is that of a generic channel, where no channel state…

Information Theory · Computer Science 2016-05-18 Aly El Gamal

We study the problem of interference management in fast fading wireless networks, in which the transmitters are only aware of network topology. We consider a class of retransmission-based schemes, where transmitters in the network are only…

Information Theory · Computer Science 2015-02-12 Navid Naderializadeh , Aly El Gamal , A. Salman Avestimehr

Interference management in a three-user interference channel with alternating connectivity with only topological knowledge at the transmitters is considered. The network has a Wyner-type channel flavor, i.e., for each connectivity state the…

Information Theory · Computer Science 2013-10-10 Soheyl Gherekhloo , Anas Chaaban , Aydin Sezgin

Interference networks with no channel state information at the transmitter (CSIT) except for the knowledge of the connectivity graph have been recently studied under the topological interference management (TIM) framework. In this paper, we…

Information Theory · Computer Science 2014-12-03 Xinping Yi , David Gesbert

We explore the interplay between interference, cooperation and connectivity in heterogeneous wireless interference networks. Specifically, we consider a 4-user locally-connected interference network with pairwise clustered decoding and show…

Information Theory · Computer Science 2016-11-17 Chenwei Wang , Syed A. Jafar , Shlomo Shamai , Michele Wigger

Achievable degrees-of-freedom (DoF) of the large-scale interfering two-way relay network is investigated. The network consists of $K$ pairs of communication nodes (CNs) and $N$ relay nodes (RNs). It is assumed that $K\ll N$ and each pair of…

Information Theory · Computer Science 2016-11-17 Hyun Jong Yang , Won-Yong Shin , Bang Chul Jung

We study the symmetric degrees-of-freedom (DoF) of partially connected interference networks under linear coding strategies at transmitters without channel state information beyond topology. We assume that the receivers are equipped with…

Information Theory · Computer Science 2016-11-15 Heecheol Yang , Navid Naderializadeh , Amir Salman Avestimehr , Jungwoo Lee

A linear interference network is considered. Long-term fluctuations (shadow fading) in the wireless channel can lead to any link being erased with probability p. Each receiver is interested in one unique message that can be available at M…

Information Theory · Computer Science 2013-12-19 Aly El Gamal , Venugopal V. Veeravalli

We characterize the degrees of freedom (DoF) of multi-way relay MIMO interference networks. In particular, we consider a wireless network consisting of 4 user nodes, each with M antennas, and one N-antenna relay node. In this network, each…

Information Theory · Computer Science 2014-01-23 Chenwei Wang

The degrees of freedom (DoF) number of the fully connected K-user Gaussian interference channel is known to be K/2. In [1], the DoF for the same channel model was studied while allowing each message to be available at its own transmitter as…

Information Theory · Computer Science 2012-02-29 Aly El Gamal , V. Sreekanth Annapureddy , Venugopal V. Veeravalli

In this paper, we characterize the degrees of freedom (DoF) for $K $-user $M \times 1 $ multiple-input single-output interference channels with reconfigurable antennas which have multiple preset modes at the receivers, assuming linear…

Information Theory · Computer Science 2016-02-15 Heecheol Yang , Wonjae Shin , Jungwoo Lee

A network consisting of a point-to-point (P2P) link and a multiple access channel (MAC) sharing the same medium is considered. The resulting interference network, with three transmitters and two receivers is studied from degrees of freedom…

Information Theory · Computer Science 2011-10-05 Anas Chaaban , Aydin Sezgin

The degrees of freedom (DoF) of an X-network with M transmit and N receive nodes utilizing interference alignment with the support of $J$ relays each equipped with $L_j$ antennas operating in a half-duplex non-regenerative mode is…

Information Theory · Computer Science 2013-09-16 Daniel Frank , Karlheinz Ochs , Aydin Sezgin

This work studies linear interference networks, both wired and wireless, with no channel state information at the transmitters (CSIT) except a coarse knowledge of the end-to-end one-hop topology of the network that only allows a distinction…

Information Theory · Computer Science 2016-11-17 Syed A. Jafar
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