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
Citations
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01 Nov 2015
TL;DR: Simulation results show that in CA intra-band scenario, the throughput of non-contiguous CA has better performance compared with CA contiguous, whereas in the inter-band CA scenario, CC combination with lower frequency resulting better throughput performance.
Abstract: This paper proposes throughput evaluation for LTE-Advanced network access in the particular service area employing carrier aggregation (CA) technique. From several kind of CA, we evaluate which one the best CA configuration in term of network throughput. 30 MHz aggregated bandwidth and two component carrier (CC) serve as a primary serving cell (PCell) and secondary serving cell (SCell) are used in the simulation. Simulation results show that the configuration of wider PCell bandwidth resulting better performance of the throughput. In particular, in CA intra-band scenario, the throughput of non-contiguous CA has better performance compared with CA contiguous. Whereas in the inter-band CA scenario, CC combination with lower frequency resulting better throughput performance.
4 citations
Cites methods from "4G: LTE/LTE-Advanced for Mobile Bro..."
...In 2012, LTE-Advanced has been developed as the standard to include a new technique that is called carrier aggregation (CA) [1]-[3]....
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01 Oct 2012
TL;DR: This work reports on an effort to overcome problems by using a domain-specific executable modelling language for each included domain in embedded software, delivered for the Ericsson LTE-A uplink test bed.
Abstract: Embedded software is often composed of interacting domains. A common problem is that the implementation intertwines the different domain solutions with each other and the platform-specific details. The result is a code mass that is hard to understand, maintain and reuse. We report on an effort to overcome these problems by using a domain-specific executable modelling language for each included domain. The application was delivered for the Ericsson LTE-A uplink test bed as part of the 4G telecommunications system that was presented at the Mobile World Congress in Barcelona, February 2011. The requirements for the delivered software included efficient real-time performance for signal processing on new hardware as well as a firm non-negotiable delivery deadline. Our results show that the chosen modelling languages allowed independent implementation and validation of each domain. Neither did the integration of the separate solutions imply additional problems.
4 citations
Cites methods from "4G: LTE/LTE-Advanced for Mobile Bro..."
...BACKGROUND After de.ning what we mean by domain we describe the two domains in the LTE-A uplink channel estimator, the signal processing domain and the control domain....
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...In the LTE-A uplink testbed project, the signal processing more precisely consisted of multiple-user, multiple-antenna uplink data processing according to the 3GPP1 standard, and our modelling mainly implicated the channel estimation parts....
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...MOTIVATION In order to implement the LTE-A uplink channel estimator we decided to use two di.erent modelling languages; a functional language to model the algorithms of the signal processing and an ob ject-oriented language to model the execution .ow of the signals....
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...The testbed included adding features as well as deploying applications on a new hardware platform, resulting in an LTE-A [8] prototype to be presented at the Mobile World Congress in Barcelona, February 2011....
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...The application was delivered for the Ericsson LTE-A uplink test bed as part of the 4G telecommunications system that was presented at the Mobile World Congress in Barcelona, February 2011....
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Proceedings Article•
23 Dec 2013TL;DR: This paper presents a design method for a small cell system formed by splitting a macro cell from the perspective of user throughput performance, important for realizing a smallcell strategy for heterogeneous networks (HetNets) and relaying in future mobile communication systems such as LTE-advanced and beyond.
Abstract: This paper presents a design method for a small cell system formed by splitting a macro cell from the perspective of user throughput performance. System level computer simulation results such as average user throughput and the cell edge user throughput performance are provided for several types of small cell. Furthermore, the possibility of the increase of system capacity using small cells is also investigated in the simulation under conditions of increased user equipment (UE) density. This strategy is important for realizing a small cell strategy for heterogeneous networks (HetNets) and relaying in future mobile communication systems such as LTE-advanced and beyond.
4 citations
TL;DR: Two cost-based mechanisms are investigated to represent two interoperability functions: initial network selection INS and inter-network handover INH, and simplified approaches that ease the evaluation of related cost functions CFs are proposed.
Abstract: In this paper, basic mechanisms of interoperability between long-term evolution LTE as 4G cellular system and mobile WIMAX networks as 4G wireless are introduced. Two cost-based mechanisms are investigated to represent two interoperability functions: initial network selection INS and inter-network handover INH. Simplified approaches that ease the evaluation of related cost functions CFs are proposed. The necessary assumptions for the implementation of a joint LTE-WIMAX system level simulator platform, through a real coexistence scenario, are proposed. Numerical results show a considerable enhancement in terms of selected performance metrics such as blocking and dropping probabilities. Weight values readjustments are also tested to highlight the critical key factors affecting interoperability mechanisms.
4 citations