Book•
3G Evolution : HSPA and LTE for Mobile Broadband
31 Jul 2007-
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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14 Oct 2010
TL;DR: Simulation results support the general analysis of the algorithms, and the tradeoff between performance losing and complexity reduction achieved by Algorithm 3.
Abstract: Efficient Branch-and-Bound (BnB) based radio resource allocation (RRA) algorithms are proposed for Orthogonal Frequency Division Multiple Access (OFDMA) system in this paper. Optimal RRA solution can be obtained by BnB based Algorithm 1 with easy implementation. Suboptimal RRA solution can be achieved by BnB based Algorithm 2 with a large computational complexity reduction. Tradeoff between throughput performance and computational complexity can be made by Algorithm 3. Simulation results support our general analysis of the algorithms, and the tradeoff between performance losing and complexity reduction achieved by Algorithm 3.
5 citations
27 May 2014
TL;DR: The performances of these frequency planning schemes are compared under different resource scheduling strategies via simulations to also measure the performance of each scheduler and design trade-offs are outlined for ICIC techniques to be used in OFDMA networks.
Abstract: In this paper, we evaluate the intercell-interference coordination (ICIC) performances of frequency planning schemes in OFDMA cellular networks. In particular, universal frequency reuse (reuse-1), reuse-3, strict fractional frequency reuse (FFR) and soft frequency reuse (SFR) performances are evaluated. The performances of these frequency planning schemes are compared under different resource scheduling strategies via simulations to also measure the performance of each scheduler. Based on the simulation results, design trade-offs are outlined for ICIC techniques to be used in OFDMA networks.
5 citations
Cites background from "3G Evolution : HSPA and LTE for Mob..."
...In orthogonal frequency division multiple access (OFDMA), which is the standard for Long Term Evolution (LTE) systems [1], intracell users are orthogonal to each other, therefore the source of interference is inter-cell interference (ICI)....
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Journal Article•
TL;DR: This paper develops a less complex centralized scheme for joint Sub-carrier pairing and allocation along with relay selection and performance is compared with Exhaustive Search Algorithm.
Abstract: Multi-carrier cooperative relay-based wireless communication is of particular interest in future wireless networks. In this paper we present resource allocation algorithm in which sub-carrier pairing is of particular interest along with fairness constraint in multi-user networks. An optimization of sub-carrier pair selection is formulated through capacity maximization problem. Sub-carrier pairing is applied in both two-hop Amplify & Forward (AF) and Decode & Forward (DF) cooperative multi-user networks. We develop a less complex centralized scheme for joint Sub-carrier pairing and allocation along with relay selection. The computational complexity of the proposed algorithms has been analyzed and performance is compared with Exhaustive Search Algorithm.
5 citations
10 Nov 2011
TL;DR: In this paper, an 802.11g OFDM (Orthogonal Frequency Division Multiplexing) Software Defined Radio (SDR) base station beacon frame transmitter is used to test a transmit chain test bed.
Abstract: A transmit chain test bed is used in the project presented in this paper to test an 802.11g OFDM (Orthogonal Frequency Division Multiplexing) Software Defined Radio (SDR) base station beacon frame transmitter. Several prior Gnuradio test bed setups show how a Gnuradio SDR Transmitter is able to communicate with another Gnuradio SDR. This paper additionally shows how a Gnuradio SDR Transmitter is able to visibly communicate with off-the-shelf 802.11 WLAN (Wireless Local Area Network) off-the-shelf chips. Results of the implementation show that a SDR base station is successfully able to communicate with traditional WLAN off-the-shelf communication chips found inside devices such as laptops, netbooks and mobile phones, which were used as the OFDM beacon frame receptors.
5 citations
01 Jan 2010
TL;DR: In this paper, the authors propose a method to solve the problem of "uniformity" and "uncertainty" in the context of education.iii.iiiiii.
Abstract: iii
5 citations