Book•
4G: LTE/LTE-Advanced for Mobile Broadband
21 Mar 2011-
TL;DR: In this article, the authors focus on LTE with full updates including LTE-Advanced to provide a complete picture of the LTE system, including the physical layer, access procedures, broadcast, relaying, spectrum and RF characteristics, and system performance.
Abstract: Based on the bestseller "3G Evolution - HSPA and LTE for mobile broadband" and reflecting the ongoing success of LTE throughout the world, this book focuses on LTE with full updates including LTE-Advanced to provide a complete picture of the LTE system. Overview and detailed explanations are given for the latest LTE standards for radio interface architecture, the physical layer, access procedures, broadcast, relaying, spectrum and RF characteristics, and system performance. Key technologies presented include multi-carrier transmission, advanced single-carrier transmission, advanced receivers, OFDM, MIMO and adaptive antenna solutions, advanced radio resource management and protocols, and different radio network architectures. Their role and use in the context of mobile broadband access in general is explained. Both a high-level overview and more detailed step-by-step explanations of the LTE/LTE-Advanced implementation are given. An overview of other related systems such as GSM/EDGE, HSPA, CDMA2000, and WIMAX is also provided. This book is a 'must-have' resource for engineers and other professionals in the telecommunications industry, working with cellular or wireless broadband technologies, giving an understanding of how to utilize the new technology in order to stay ahead of the competition. The authors of the book all work at Ericsson Research and have been deeply involved in 3G and 4G development and standardisation since the early days of 3G research. They are leading experts in the field and are today still actively contributing to the standardisation of LTE within 3GPP. Includes full details of the latest additions to the LTE Radio Access standards and technologies up to and including 3GPP Release 10Clear explanations of the role of the underlying technologies for LTE, including OFDM and MIMO Full coverage of LTE-Advanced, including LTE carrier aggregation, extended multi-antenna transmission, relaying functionality and heterogeneous deploymentsLTE radio interface architecture, physical layer, access procedures, MBMS, RF characteristics and system performance covered in detail
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TL;DR: This paper studies the MBSA planning (MBSAP) problem under the constraints that each BS can supply only a limited number of video programs and proposes a genetic algorithm based algorithm and a Fusion-and-Refinement algorithm due to the high computational complexity of ILP.
6 citations
01 Sep 2015
TL;DR: A design approach for fiber-optic inband relaying in the presence of self-interference, which is the interference between the backhaul and access links, is proposed and the theoretical desired-to-undesired- signal ratio (DUR) resulting from the interference is discussed.
Abstract: This paper proposes a new type of fiber-optic relaying that extends the coverage of mobile networks. The antenna facing the evolved Node B is geographically separated from the antenna facing the user equipment, and the two antennas are connected by an optical fiber. This paper proposes a design approach for fiber-optic inband relaying in the presence of self-interference, which is the interference between the backhaul and access links. The theoretical desired-to-undesired- signal ratio (DUR) resulting from the interference is discussed for both uplink and downlink on the basis of a practical layout model. Moreover, we show the DUR performance for two types of path loss models.
6 citations
01 Nov 2016
TL;DR: Directional antenna arrays, geospatial-based propagation modeling algorithms, and extended sectoral networking as well as signal processing algorithms are developed for supporting the proposed advanced node approach.
Abstract: In this paper, advanced directional networking technology is proposed which achieves full directional capability using physical layer assets including propagation modeling and sets of directional antennas. In the proposed approach each node, referred to as an advanced node, consists of an appropriately timed scanning array for mobile user discovery, a dynamically beamformed array for communication with mobile users and an adaptive array for node-node and node-core network connectivity. Procedures are developed to enable full directional link between advanced nodes and mobile users, and with the help of high-end FPGA's, are shown to conform to the timing requirements of Medium Access Control (MAC) layers of existing IEEE 802.11 standards. The proposed procedures, therefore, are based on advanced Physical Layer capabilities with no changes in the rest of the layers of Open Systems Interconnection (OSI) layer stack. Directional antenna arrays, geospatial-based propagation modeling algorithms, and extended sectoral networking as well as signal processing algorithms are developed for supporting the proposed advanced node approach. Trade-offs in scanning timing, user AoA and the integration in IEEE 802.11 standards are simulated and obtained results will be presented.
6 citations
Cites background from "4G: LTE/LTE-Advanced for Mobile Bro..."
...In commercial wireless networks [5] omnidirectional antennas are used for new user discovery and directional antennas are used for communication only....
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TL;DR: The Engset multirate loss model is extended to obtain recursive but efficient formulas for various performance measures, including call blocking and time congestion probabilities for both the complete sharing and bandwidth reservation policies.
Abstract: 5G cellular mobile networks aspire to accommodate large numbers of users and devices most of which are expected to be mobile. They will also provide much higher data rates than previous generations’ networks. Analyzing how a cell’s performance is impacted by user mobility becomes paramount in an effort to provide the best possible quality of services. In this paper we propose a model of a generic cell where each user is moving based on the random waypoint model. We then adapt this model to a 5G cell to extract meaningful quality of service metrics. To this end and to provide a better perspective of how the model can be adapted to different bandwidth allocation policies, we extend the Engset multirate loss model to obtain recursive but efficient formulas for various performance measures, including call blocking and time congestion probabilities for both the complete sharing and bandwidth reservation policies.
6 citations
Cites methods from "4G: LTE/LTE-Advanced for Mobile Bro..."
...The bandwidth in a 5G cell is measured in Physical Resource Blocks (PRB) each of which carries a number of subcarriers which in turn carry an integral division of the total bandwidth of the cell [15]....
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TL;DR: This paper considers the downlink communication of an arbitrary number of transmitters over broadcast interference channels, and designs precoding reuse schemes for which interference suppression can be attained in a coordinated or uncoordinated fashion over a fixed number of quasi-static channel uses.
Abstract: In this paper, we consider the downlink communication of an arbitrary number of transmitters over broadcast interference channels. In order to suppress interference, we investigate a network-level linear precoding scheme dubbed precoding reuse. Such a technique is leveraged on the interference alignment (IA) principle, where the undesired signals overlap in a reduced-dimension subspace at the receivers. Precoding reuse relies on two cascaded precoders to suppress intra- and inter-cell interference and requires feedback only within a cell. We designed precoding reuse schemes for which interference suppression can be attained in a coordinated or uncoordinated fashion over a fixed number of quasi-static channel uses. We provide expressions for the parametrization of the precoders and investigate the advantages, limitations, suitable scenarios, and applications of the proposed IA scheme. Finally, we pointed out the open problems, where the proposed IA scheme and parametrization can be implemented with little effort, demanding minimum changes to an existing cellular system supporting multi-user MIMO.
6 citations