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2018 | Book

Introduction Read chapter Read first chapter

Massive MIMO in 5G Networks: Selected Applications

Authors: Long Zhao, Hui Zhao, Prof. Kan Zheng, Wei Xiang

Publisher: Springer International Publishing

Book Series : SpringerBriefs in Electrical and Computer Engineering

Part of: Springer Professional "Wirtschaft+Technik" , Springer Professional "Technik" , Springer Professional "Wirtschaft"

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About this book

This SpringerBrief focuses mainly on the basic theory and applications of massive MIMO in 5G networks. The significance of massive MIMO for 5G or future communications is first briefly discussed. Then, the basic theory of massive MIMO technology is comprehensively analyzed, i.e., a variety of 5G scenarios and their improvements are described when massive MIMO is taken into account. Art physical-layer techniques and various networking techniques for interference mitigation and resource scheduling are introduced as well. This SpringerBrief also examines the selected applications of massive MIMO in 5G networks, i.e., massive MIMO-aided millimeter communications and energy transfer. The physical-layer design, multiple access control (MAC) mechanism and networking techniques are discussed for millimeter-wave communications aided by massive MIMO technology. Then, massive MIMO is covered for hybrid information and energy transfer. A downlink precoder and a uplink pilot scheme is proposed for single cell networks, and both non-cooperative and cooperative energy transfer in multi-cell are presented.

Communication researchers in the area of MIMO technology, as well as researchers and practitioners working in millimeter communications and energy transfer seeking new research topics, and topic areas with communication system design, centralized and distributed algorithms, will find this brief useful as a reference. Advanced-level students studying communication engineering will also find this book useful as a secondary text.

Table of Contents

Frontmatter
Chapter 1. Introduction
Abstract
Massive (MIMO) technology is an important and timely topic, which is largely motivated by the requirements of the (5G) or future wireless communications. By offering a large number of (DoF), 5G is capable of simultaneously serving multiple users with high gains and thus improving the system (SE), (EE) and reliability. Different from existing studies in the literature, this book focuses specifically on the state-of-the-art of massive MIMO and its typical applications, such as (mm-wave) communications and wireless energy transfer. In this chapter, we first present the motivations of massive MIMO following a short overview on the requirements and techniques of 5G communications. Then, basic concepts alongside the pros and cons of both MIMO and massive MIMO systems are given. The aim of the monograph is provided at the end of this chapter.
Long Zhao, Hui Zhao, Kan Zheng, Wei Xiang
Chapter 2. Massive MIMO Technology
Abstract
The escalating tele-traffic growth imposed by the proliferation of smart-phones and tablet computers outstrips the capacity increase of wireless communications networks. Furthermore, it results in substantially increased carbon dioxide emissions. As a powerful countermeasure, in the case of full-rank channel matrices, MIMO techniques are potentially capable of linearly increasing the capacity or decreasing the transmit power upon commensurately increasing the number of antennas. Hence, the concept of massive MIMO systems has attracted substantial research attention and been regarded as a promising technique for next-generation wireless communications networks. Therefore, this chapter surveys the state-of-the-art of massive MIMO systems. Firstly, some typical application scenarios are classified and analyzed. Then, key techniques of both the physical layer and network layer are also detailed. Finally, we conclude this chapter.
Long Zhao, Hui Zhao, Kan Zheng, Wei Xiang
Chapter 3. Massive MIMO-Aided Millimeter Communication Technology
Abstract
HetSNets can increase the SE and throughput with the hierarchical deployment of low power nodes as well as the macro nodes. In order to meet the increasing capacity requirements of future 5G wireless networks, much more number of low power nodes needs to be deployed if no new frequency resources becomes available, which may cause the serious interference between nodes. Then, the introduction of mm-wave communications with massive MIMO provides unprecedented spectral resources for HetSNets in 5G. However, major challenges remain for implementing mm-wave massive MIMO in HetSNets. To this end, we introduce several typical deployment scenarios for HetSNets with mm-wave massive MIMO. A frame structure based on TDD is proposed and discussed then in details. Next, the challenges and possible solutions relating to both physical, MAC and network layers are studied. Finally, system-level simulations are implemented to evaluate the system performance of HetSNets with mm-wave massive MIMO.
Long Zhao, Hui Zhao, Kan Zheng, Wei Xiang
Chapter 4. Massive MIMO-Assisted Energy Transfer Technology
Abstract
This chapter considers a downlink massive MIMO system, where the base station simultaneously sends information and energy to information users and energy users, respectively. The aim is to maximize the minimum harvested energy among the energy users while meeting the rate requirements of information users. With perfect CSI, the problem is solved by obtaining the asymptotically optimal power allocation of information users and the combination coefficients of the energy precoder. For the CSI estimation in time-division duplex systems, orthogonal pilot sequences are employed by information users during the uplink, and one common pilot sequence is shared by all energy users. It is shown that the energy harvesting performance of such a shared pilot scheme is always better than that of the orthogonal pilot scheme. Further, exploiting the inter-cell interference in multi-cell systems, a joint precoder is proposed for cooperative energy transfer, for which both the centralized and distributed implementations are given. Results indicate that the cooperative energy transfer always outperforms the non-cooperative scheme with either perfect or estimated CSI.
Long Zhao, Hui Zhao, Kan Zheng, Wei Xiang
Chapter 5. Conclusion and Outlook
Abstract
This monograph aims to elaborate that massive MIMO technology can be utilized to provide high QoS for 5G communications and future services. The physical-layer and MAC-layer techniques of massive MIMO are first summarized and compared in detail. Based on the basic theory of massive MIMO, two typical application scenarios of massive MIMO, i.e., mm-wave communications and wireless energy transfer, are discussed, demonstrating the feasibility and efficiency of massive MIMO in these two scenarios. It is concluded that massive MIMO can be used to efficiently support information transmission and energy transfer.
Long Zhao, Hui Zhao, Kan Zheng, Wei Xiang
Metadata
Title
Massive MIMO in 5G Networks: Selected Applications
Authors
Long Zhao
Hui Zhao
Prof. Kan Zheng
Wei Xiang
Copyright Year
2018
Electronic ISBN
978-3-319-68409-3
Print ISBN
978-3-319-68408-6
DOI
https://doi.org/10.1007/978-3-319-68409-3