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Open AccessJournal ArticleDOI

Millimeter Wave Mobile Communications for 5G Cellular: It Will Work!

TLDR
The motivation for new mm-wave cellular systems, methodology, and hardware for measurements are presented and a variety of measurement results are offered that show 28 and 38 GHz frequencies can be used when employing steerable directional antennas at base stations and mobile devices.
Abstract
The global bandwidth shortage facing wireless carriers has motivated the exploration of the underutilized millimeter wave (mm-wave) frequency spectrum for future broadband cellular communication networks. There is, however, little knowledge about cellular mm-wave propagation in densely populated indoor and outdoor environments. Obtaining this information is vital for the design and operation of future fifth generation cellular networks that use the mm-wave spectrum. In this paper, we present the motivation for new mm-wave cellular systems, methodology, and hardware for measurements and offer a variety of measurement results that show 28 and 38 GHz frequencies can be used when employing steerable directional antennas at base stations and mobile devices.

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Journal ArticleDOI

Butler Matrix Based Beamforming Networks for Phased Array Antenna Systems: A Comprehensive Review and Future Directions for 5G Applications

TL;DR: In this article, the authors present an extensive review of the Butler Matrix (BM) based beamforming networks, and discuss which type of BM will be suitable for the phased array antenna (PAA) systems in the upcoming 5G and next-generation of B5G wireless systems.
Journal ArticleDOI

Channel-Reconstruction-Based Hybrid Precoding for Millimeter-Wave Multi-User MIMO Systems

TL;DR: In this paper, an advanced directional precoding structure for multi-user multi-input multi-output (MIMO) transmissions for millimeter-wave systems with a hybrid precoding architecture at the base station is proposed.
Journal ArticleDOI

Efficient Beam Training and Sparse Channel Estimation for Millimeter Wave Communications Under Mobility

TL;DR: This paper introduces a dedicated beam training strategy which sends the training beams separately to a specific high mobility user without changing the periodicity of the conventional beam training, and proposes the optimal training beam selection strategy which finds the best beamforming vectors yielding the lowest channel estimation error based on the target user's probabilistic channel information.
Journal ArticleDOI

Multi-port Active Load Pulling for mm-Wave 5G Power Amplifiers: Bandwidth, Back-Off Efficiency, and VSWR Tolerance

TL;DR: A systematic approach to exploit active load pulling in a multi-port network that synthesizes optimal impedance conditions for 1) broadband peak and back-off operation and 2) mitigating VSWR events at peak power is presented.
Journal ArticleDOI

Radio propagation and wireless coverage of LSAA-based 5G millimeter-wave mobile communication systems

TL;DR: A comprehensive survey of recent advances in statistical mmWave channel modeling is presented in terms of channel parameter estimation, large-scale path loss models, and small-scale cluster models, to analyze and optimize the LSAA-based network deployments.
References
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Book

Wireless Communications: Principles and Practice

TL;DR: WireWireless Communications: Principles and Practice, Second Edition is the definitive modern text for wireless communications technology and system design as discussed by the authors, which covers the fundamental issues impacting all wireless networks and reviews virtually every important new wireless standard and technological development, offering especially comprehensive coverage of the 3G systems and wireless local area networks (WLANs).
Journal ArticleDOI

Scaling Up MIMO: Opportunities and Challenges with Very Large Arrays

TL;DR: The gains in multiuser systems are even more impressive, because such systems offer the possibility to transmit simultaneously to several users and the flexibility to select what users to schedule for reception at any given point in time.
Journal ArticleDOI

Scaling up MIMO: Opportunities and Challenges with Very Large Arrays

TL;DR: Very large MIMO as mentioned in this paper is a new research field both in communication theory, propagation, and electronics and represents a paradigm shift in the way of thinking both with regards to theory, systems and implementation.
Journal ArticleDOI

An introduction to millimeter-wave mobile broadband systems

TL;DR: This article introduces a millimeter-wave mobile broadband (MMB) system as a candidate next generation mobile communication system and demonstrates the feasibility for MMB to achieve gigabit-per-second data rates at a distance up to 1 km in an urban mobile environment.

Wireless Communications: Principles and Practice (2nd Edition) by

TL;DR: This leading book on wireless communications offers a wealth of practical information on the implementation realities of wireless communications, from cellular system design to networking, plus world-wide standards, including ETACS, GSM, and PDC.
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