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We propose a novel analytical framework for evaluating the coverage performance of a millimeter wave (mmWave) cellular network where idle user equipments (UEs) act as relays. In this network, the base station (BS) adopts either the direct…

Information Theory · Computer Science 2019-12-30 Simin Xu , Nan Yang , Biao He , Hamid Jafarkhani

The future 5G networks are expected to use millimeter wave (mmWave) frequency bands to take advantage of large unused spectrum. However, due to the high path loss at mmWave frequencies, coverage of mmWave signals can get severely reduced,…

Signal Processing · Electrical Eng. & Systems 2019-05-14 Wahab Khawaja , Ozgur Ozdemir , Yavuz Yapici , Fatih Erden , Martins Ezuma , Ismail Guvenc

Millimeter wave (mm-wave) communications is considered a promising technology for 5G networks. Exploiting beamforming gains with large-scale antenna arrays to combat the increased path loss at mm-wave bands is one of its defining features.…

Information Theory · Computer Science 2017-04-21 Xianghao Yu , Jun Zhang , Martin Haenggi , Khaled B. Letaief

Reconfigurable intelligent surfaces (RISs) provide alternative routes for reflected signals to network users, offering numerous applications. This paper explores an innovative approach of strategically deploying RISs along road areas to…

Signal Processing · Electrical Eng. & Systems 2024-08-12 Chang-Sik Choi , Junhyeong Kim , Junil Choi

In future wireless communication systems, millimeter waves (mmWaves) will play an important role in meeting high data rates. However, due to their short wavelengths, these mmWaves present high propagation losses and are highly attenuated by…

Networking and Internet Architecture · Computer Science 2025-01-16 Mbissane Dieng , Gheorghe Zaharia , Ghaïs El Zein , Raphaël Gillard , Renaud Loison

Millimeter-wave (mmWave) bands will play an important role in 5G wireless systems. The system performance can be assessed by using models from stochastic geometry that cater for the directivity in the desired signal transmissions as well as…

Networking and Internet Architecture · Computer Science 2019-01-25 Mattia Rebato , Jihong Park , Petar Popovski , Elisabeth De Carvalho , Michele Zorzi

With growing interest in mmWave connectivity for UAVs, a basic question is whether networks intended for terrestrial users can provide sufficient aerial coverage as well. To assess this possibility, the paper proposes a novel evaluation…

Signal Processing · Electrical Eng. & Systems 2021-05-20 Seongjoon Kang , Marco Mezzavilla , Angel Lozano , Giovanni Geraci , William Xia , Sundeep Rangan , Vasilii Semkin , Giuseppe Loianno

In the millimeter waves (mmWave) bands considered for 5G and beyond, the use of very high frequencies results in the interruption of communication whenever there is no line of sight between the transmitter and the receiver. Blockages have…

Signal Processing · Electrical Eng. & Systems 2024-12-03 Cristian García Ruiz , Antonio Pascual-Iserte , Olga Muñoz-Medina

The millimeter wave (mmWave) frequencies offer the potential for enormous capacity wireless links. However, designing robust communication systems at these frequencies requires that we understand the channel dynamics over both time and…

Signal Processing · Electrical Eng. & Systems 2017-12-18 Christopher Slezak , Aditya Dhananjay , Sundeep Rangan

mm-Wave communication employs directional beams to overcome high path loss. High data rate communication is typically along line-of-sight (LoS). In outdoor environments, such communication is susceptible to temporary blockage by pedestrians…

Information Theory · Computer Science 2021-11-17 Santosh Ganji , Romil Sonigra , P. R. Kumar

The bloom in mobile applications not just bring in enjoyment to daily life, but also imposes more complicated traffic situation on wireless network. A complete understanding of the impact from traffic profile is thus essential for network…

Information Theory · Computer Science 2018-01-31 Howard H. Yang , Tony Q. S. Quek

A critical challenge for wireless communications in the millimeter wave (mmWave) bands is blockage. MmWave signals suffer significant penetration losses from many common materials and objects, and small changes in the position of obstacles…

Information Theory · Computer Science 2018-06-27 Christopher Slezak , Menglei Zhang , Marco Mezzavilla , Sundeep Rangan

We provide a comprehensive overview of mathematical models and analytical techniques for millimeter wave (mmWave) cellular systems. The two fundamental physical differences from conventional Sub-6GHz cellular systems are (i) vulnerability…

Information Theory · Computer Science 2016-11-17 Jeffrey G. Andrews , Tianyang Bai , Mandar Kulkarni , Ahmed Alkhateeb , Abhishek Gupta , Robert W. Heath

The availability of large unused spectrum at millimeter wave (mmWave) frequency bands has steered the future 5G research towards these bands. However, mmWave signals are attenuated severely in the non-lineof-sight (NLOS) scenarios, thereby…

Signal Processing · Electrical Eng. & Systems 2018-11-20 Wahab Ali Gulzar Khawaja , Ozgur Ozdemir , Fatih Erden , Ismail Guvenc , Martins Ezuma , Yuichi Kakishima

To achieve high survivability of mmWave wireless backhaul networks, deploying mmWave nodes on regularly-spaced lampposts in urban environment according to a triangular-wave topology is a promising approach, because the primary interference…

Systems and Control · Electrical Eng. & Systems 2020-10-28 Yuchen Liu , Douglas M. Blough

Recent research has demonstrated the importance of boundary effects on the overall connection probability of wireless networks, but has largely focused on convex domains. We consider two generic scenarios of practical importance to wireless…

Information Theory · Computer Science 2014-03-06 Mohammud Z. Bocus , Carl P. Dettmann , Justin P. Coon , Mohammed R. Rahman

We develop a novel and powerful method of exactly calculating various transport characteristics of waves in one-dimensional random media with (or without) coherent absorption or amplification. Using the method, we compute the probability…

Disordered Systems and Neural Networks · Physics 2009-10-31 Kihong Kim

Millimeter-wave systems are characterized by the use of highly directional antennas and the presence of blockages, which significantly alter the path-loss and small-scale fading parameters. The received power of each interferer depends on…

Information Theory · Computer Science 2017-09-05 Enass Hriba , Matthew C. Valenti , Kiran Venugopal , Robert W. Heath,

Using the properties of random M\"{o}bius transformations, we investigate the statistical properties of the reflection coefficient in a random chain of lossy scatterers. We explicitly determine the support of the distribution and the…

Statistical Mechanics · Physics 2020-08-25 Theodoros G. Tsironis , Aris L. Moustakas

This paper presents a novel stochastic geometry approach to the connectivity of milimeter wave (mmWave) networks with multi-hop relaying. The random positions and shapes of obstacles in the radio environment are modeled as a Boolean model,…

Information Theory · Computer Science 2014-12-23 Xingqin Lin , Jeffrey G. Andrews