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Pilot contamination, defined as the interference during the channel estimation process due to reusing the same pilot sequences in neighboring cells, can severely degrade the performance of massive multiple-input multiple-output systems. In…

Information Theory · Computer Science 2018-06-05 L. Srikar Muppirisetty , Themistoklis Charalambous , Johnny Karout , Gabor Fodor , Henk Wymeersch

Recent advances in self-interference cancellation enable radios to transmit and receive on the same frequency at the same time. Such a full duplex radio is being considered as a potential candidate for the next generation of wireless…

Information Theory · Computer Science 2016-07-19 Sanjay Goyal , Carlo Galiotto , Nicola Marchetti , Shivendra Panwar

We propose an analytic approach to the frequency bandwidth dimensioning problem, faced by cellular network operators who deploy/upgrade their networks in various geographical regions (countries) with an inhomogeneous urbanization. We…

Networking and Internet Architecture · Computer Science 2015-03-20 Bartlomiej Blaszczyszyn , Mohamed Kadhem Karray

The lack of interoperability between mobile cellular access networks has long been a challenging obstacle, which telecommunication engineering is trying to overcome. In second generation networks for example, this problem lies in the fact…

Software Engineering · Computer Science 2012-07-23 Hasni Neji

CDMA is a multiple access method in which the user's uses spread spectrum techniques and occupy the entire spectrum whenever they transmit. In wireless communication signal-to-noise ratio (SNR) is the very important parameter that…

Networking and Internet Architecture · Computer Science 2010-02-26 Md. M. Hossain , Md. M. Rahman , Md. A. Alim

The tremendous capacity gains promised by space division multiple access (SDMA) depend critically on the accuracy of the transmit channel state information. In the broadcast channel, even without any network interference, it is known that…

Information Theory · Computer Science 2016-11-17 Marios Kountouris , Jeffrey G. Andrews

Interference matrix (IM) has been widely used in frequency planning/optimization of cellular systems because it describes the interaction between any two cells. IM is generated from the source data gathered from the cellular system, either…

Networking and Internet Architecture · Computer Science 2011-03-08 Zhouyun Wu , Aiping Huang , Haojie Zhou , Cunqing Hua , Jun Qian

This paper compares two important downlink multicell interference mitigation techniques, namely, large-scale (LS) multiple-input multiple-output (MIMO) and network MIMO. We consider a cooperative wireless cellular system operating in…

Information Theory · Computer Science 2014-07-23 Kianoush Hosseini , Wei Yu , Raviraj S. Adve

In this letter, we propose the interference cancellation through interference alignment at the downlink of cognitive cellular networks. Interference alignment helps the spatial resources to be shared among primary and secondary cells and…

Information Theory · Computer Science 2014-11-25 May Moussa , Fotis Foukalas , Tamer Khattab

In this paper, we focus on one of the representative 5G network scenarios, namely multi-tier heterogeneous cellular networks. User association is investigated in order to reduce the down-link co-channel interference. Firstly, in order to…

Information Theory · Computer Science 2017-01-03 Tao Han , Guoqiang Mao , Qiang Li , Lijun Wang , Jing Zhang

In classical mechanics and electromagnetism, interference occurs when two or more waves overlap at the same point in spacetime. However, the advent of quantum electrodynamics (QED) and its remarkable success in describing light-matter…

Quantum Physics · Physics 2025-08-15 Alan C. Santos , Celso J. Villas-Boas

Loop interference (LI) in wireless communications, is a notion resulting from the full-duplex (FD) operation. In a large-scale network, FD also increases the multiuser interference due to the large number of active wireless links that…

Information Theory · Computer Science 2016-11-17 Constantinos Psomas , Ioannis Krikidis

Cell-free (CF) massive multiple-input multiple-output (MIMO) systems, which exploit many geographically distributed access points to coherently serve user equipments via spatial multiplexing on the same time-frequency resource, has become a…

Information Theory · Computer Science 2023-06-14 Jiakang Zheng , Jiayi Zhang , Hongyang Du , Dusit Niyato , Bo Ai , Mérouane Debbah , Khaled B. Letaief

Power consumption is a key challenge in millimeter wave (mmWave) receiver front-ends, due to the need to support high dimensional antenna arrays at wide bandwidths. Recently, there has been considerable work in developing low-power…

This work addresses channel estimation in multiple antenna multicell interference-limited networks. Channel state information (CSI) acquisition is vital for interference mitigation. Wireless networks often suffer from multicell…

Information Theory · Computer Science 2015-05-11 Maha Alodeh , Symeon Chatzinotas , Bjorn Ottersten

In this paper, the problem of allocating users to radio resources (i.e., subcarriers) in the downlink of an OFDMA cellular network is addressed. We consider a multi-cellular environment with a realistic interference model and a margin…

Optimization and Control · Mathematics 2010-07-15 Paolo Detti , Marco Moretti , Andrea Abrardo

In mmWave networks, a large or nearby object can obstruct multiple communication links, which results in spatial correlation in the blocking probability between a user and two or more base stations (BSs). This paper characterizes this…

Information Theory · Computer Science 2021-12-14 Saurabh Kumar Gupta , Vikrant Malik , Abhishek K. Gupta , Jeffrey G. Andrews

Massive Machine-Type Communications (mMTC) are one of the three types of services that should be supported by 5G networks. These are distinguished by the need to serve a large number of devices which are characterized by nonintensive…

Networking and Internet Architecture · Computer Science 2021-09-01 Fidan Mehmeti , Thomas F. La Porta

The existence of unknown interference is a prevalent problem in wireless communication networks. Especially in multi-user multiple-input multiple-output (MIMO) networks, where a large number of user equipments are served on the same…

Signal Processing · Electrical Eng. & Systems 2023-05-15 Mahmoud Zaher , Emil Björnson , Marina Petrova

Cell-free massive multiple-input multiple-output (CF mMIMO) provides good interference management by coordinating many more access points (APs) than user equipments (UEs). It becomes challenging to determine which APs should serve which UEs…

Information Theory · Computer Science 2022-12-06 Shuaifei Chen , Jiayi Zhang , Emil Björnson , Bo Ai
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