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3G Evolution : HSPA and LTE for Mobile Broadband

TL;DR: In this paper, the authors present a very up-to-date and practical book, written by engineers working closely in 3GPP, gives insight into the newest technologies and standards adopted by threeGPP with detailed explanations of the specific solutions chosen and their implementation in HSPA and LTE.
Abstract: This very up-to-date and practical book, written by engineers working closely in 3GPP, gives insight into the newest technologies and standards adopted by 3GPP, with detailed explanations of the specific solutions chosen and their implementation in HSPA and LTE. The 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 HSPA and LTE implementation are given. An overview of other related systems such as TD SCDMA, CDMA2000, and WIMAX is also provided.This is a 'must-have' resource for engineers and other professionals working with cellular or wireless broadband technologies who need to know how to utilize the new technology to stay ahead of the competition.The authors of the book all work at Ericsson Research and are deeply involved in 3G 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 both HSPA and LTE within 3GPP. * Gives the first explanation of the radio access technologies and key international standards for moving to the next stage of 3G evolution: fully operational mobile broadband* Describes the new technologies selected by the 3GPP to realise High Speed Packet Access (HSPA) and Long Term Evolution (LTE) for mobile broadband * Gives both higher-level overviews and detailed explanations of HSPA and LTE as specified by 3GPP
Citations
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Proceedings ArticleDOI
24 May 2011
TL;DR: This paper presents the use of a specific modeling approach to improve evaluation of non-functional properties of embedded systems and favors creation of abstract transaction level models to significantly reducing simulation time but still preserving accuracy of results.
Abstract: models are means to assist system architects in the evaluation process of hardware/software architectures and then to cope with the still increasing complexity of embedded systems. Efficient methods are necessary to correctly model system architectures and to make possible early performance evaluation and fast exploration of the design space. In this paper, we present the use of a specific modeling approach to improve evaluation of non-functional properties of embedded systems. The contribution is about a computation method defined to improve modeling of properties used for assessment of architecture performances. This method favors creation of abstract transaction level models and leads to significantly reducing simulation time but still preserving accuracy of results. The benefits of the proposed approach for evaluation of performances of system architectures are highlighted through analysis of two specific case studies.

3 citations

01 Jan 2019
TL;DR: VoWiFi over the onboard Wi-Fi network outperforms GSM, UMTS as well as VoLTE provided over the on-board repeaters, with equal voice quality asVoLTE but nearly 100% availability and almost 100% retainability.
Abstract: Providing cellular voice onboard trains has proven to be a challenging task. The metallic chassis and the energysaving coating on the windows act as a radio shield. In combination with sparsely spaced cellular base stations on rural routes, the coverage onboard inter-city trains is under dimensioned. Since the late 1990s, analog “amplify and forward” radio repeaters have been used extensively to provide coverage of cellular voice onboard trains. However, repeater systems have proven to be both expensive and technically problematic for both trains as well as mobile network operators. In this study, three alternative technologies for providing cellular voice onboard trains are investigated and benchmarked. The technologies under investigation are: circuit-switched voice on GSM and 3G; Voice over IP on LTE (VoLTE); Voice over the onboard Wi-Fi network (VoWiFi). To benchmark these systems against each other, measurements were conducted onboard Swedish X2000 trains, en-route between Stockholm and Gothenburg. In particular we measure: the Availability; the Retainability: Geographical Coverage and Voice quality. Our results show that VoWiFi over the onboard Wi-Fi network outperforms GSM, UMTS as well as VoLTE provided over the onboard repeaters, with equal voice quality as VoLTE but nearly 100% availability and nearly 100% retainability.

3 citations


Cites methods from "3G Evolution : HSPA and LTE for Mob..."

  • ...In order to determine the network quality of UMTS, the Common Pilot Channel (CPICH) is used [12]....

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Proceedings ArticleDOI
04 Oct 2010
TL;DR: An estimation technique for Time-Invariant (TI) channels that utilizes an Extrapolation Matrix (EM) and specially designed pilot sequences is presented and a matrix based channel interpolation method is described for time-Varying (TV) channels: Windowed DFT Interpolation.
Abstract: An estimation technique for Time-Invariant (TI) channels that utilizes an Extrapolation Matrix (EM) and specially designed pilot sequences is presented. We address the topic of pilot aided multi-user channel estimation for a proposed wireless system that uses OFDM in a synchronous SDMA environment, which can also be regarded as a Multiple-Input Multiple-Output (MIMO) environment. Unlike most multi-user channel estimation methods in the literature, the EM method does not assume that the number of utilized subcarriers is equal to the OFDM FFT size. Also, a matrix based channel interpolation method is described for Time-Varying (TV) channels: Windowed DFT Interpolation. Simulation results show that performance of our methods equal that of current technologies, but the computational complexity is significantly reduced.

3 citations


Cites background from "3G Evolution : HSPA and LTE for Mob..."

  • ...Fourth Generation (4G) network solutions and technologies are based on a combination of multicarrier and space-time signal formats [1]....

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Journal ArticleDOI
TL;DR: This paper shows how a cost function for the scheduling problem can be expressed directly in terms of load factors, and develops a near optimal solution for the resulting problem.
Abstract: Cellular third-generation wideband code division multiple access (WCDMA) systems must meet interference constraints to maintain coverage when uplink traffic is scheduled. The interference constraints can be expressed in the form of load factor constraints but current scheduling algorithms are typically not formulated in terms of these variables. The current paper shows how a cost function for the scheduling problem can be expressed directly in terms of load factors. A near optimal solution is developed for the resulting problem.

3 citations


Cites background from "3G Evolution : HSPA and LTE for Mob..."

  • ...THE fast growth of smart phone traffic has put a renewed focus on performance improvements of enhanced uplink (EUL) scheduling in the 3G wideband code division multiple access (WCDMA) cellular system [1], [2]....

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Book ChapterDOI
01 Jan 2015
TL;DR: Five scheduling algorithms were investigated and their performance was evaluated in terms of Fairness Index, Peak Throughput, Average Throughput and Edge Cell User Throughput to indicate some quality in certain parameter of evaluation but lack in other terms.
Abstract: In this paper five scheduling algorithms were investigated and their performance was evaluated in terms of Fairness Index, Peak Throughput, Average Throughput and Edge Cell User Throughput. A system level MATLAB simulator was used. The simulation takes into account different types of traffic for several mobility scenarios and propagation channel models. Results indicate that the scheduling algorithms showed some quality in certain parameter of evaluation but lack in other terms. While some scheduling algorithm take the moderate path but still be lacking especially in Edge Cell User Throughput necessitating the use of Relays or femtocells.

3 citations


Cites background from "3G Evolution : HSPA and LTE for Mob..."

  • ...Basically this algorithm rate the user in term of first come first serve basis [13]....

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  • ...In order to perform scheduling, terminals send Channel Quality Indicator (CQI) to the base station [13]....

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