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
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TL;DR: Herausforderungen, Lösungsansätze and Standardisierungsvarianten illustriert werden am Pilotprojekt »Munich Open Government Day«, in der sich eine neue Transparenz des Staates and innovative Formen der Bürgerbeteiligung bis zur Einbindung des Bürgers in die kooperative Erbringung ehemals staatlicher Le
Abstract: Mit dem »Web 2.0« wird »Open Government« als politisches und gesellschaftliches Paradigma ermoglicht. Ziele sind eine neue Transparenz des Staates und innovative Formen der Burgerbeteiligung bis zur Einbindung des Burgers in die kooperative Erbringung ehemals staatlicher Leistungen. Voraussetzungen dieser Zusammenarbeit sind eine Offnung von Staat und Verwaltung, der konstruktive Dialog und die Moglichkeit der maschinellen Nutzung frei verfugbarer offentlicher Daten. Am Pilotprojekt »Munich Open Government Day« werden Herausforderungen, Losungsansatze und Standardisierungsvarianten illustriert.
4 citations
01 Oct 2014
TL;DR: This dissertation starts with conventional relaying and considers the problem of minimizing the total consumed power while maintaining system QoS, and also considers the benefits of buffer-aided relaying in the bidirectional relay channel utilizing network coding.
Abstract: Next generation wireless networks are expected to provide high data rate and satisfy the Quality-of-Service (QoS) constraints of the users. A significant component of achieving these goals is to increase the efficiency of wireless networks by either optimizing current architectures or exploring new technologies which achieve that. The latter includes revisiting technologies which were previously proposed, but due to a multitude of reasons were ignored at that time. One such technology is relaying which was initially proposed in the latter half of the 1960s and then was revived in the early 2000s. In this dissertation, we study relaying in conjunction with resource allocation to increase the efficiency of wireless networks. In this regard, we differentiate between conventional relaying and relaying with buffers. Conventional relaying is traditional relaying where the relay forwards the signal it received immediately. On the other hand, in relaying with buffers or buffer-aided relaying as it is called, the relay can store received data in its buffer and forward it later on. This gives the benefit of taking advantage of good channel conditions as the relay can only transmit when the channel conditions are good. The dissertation starts with conventional relaying and considers the problem of minimizing the total consumed power while maintaining system QoS. After upper bounding the system performance, more practical algorithms which require reduced feedback overhead are explored. Buffer-aided relaying is then considered and the joint user-and-hop scheduler is introduced which exploits multi-user diversity (MUD) and 5 multi-hop diversity (MHD) gains together in dual-hop broadcast channels. Next joint user-and-hop scheduling is extended to the shared relay channel where two sourcedestination pairs share a single relay. The benefits of buffer-aided relaying in the bidirectional relay channel utilizing network coding are then explored. Finally, a new transmission protocol for overlay cognitive radios is derived. This protocol utilizes relays with buffers, requires only causal knowledge of the primary’s message at the secondary and incentivizes the primary to cooperate with the secondary and share its codebook.
4 citations
Cites background from "3G Evolution : HSPA and LTE for Mob..."
...For instance, in Long Term Evolution (LTE)-Advanced systems, fixed access-point relays with only an in-band wireless connection to the backhaul network are to be deployed [17, 18, 19]....
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06 May 2012
TL;DR: This paper proposes an efficient coding scheme for broadcast CPC, called Differential Mesh Information Coding (DMIC), to reduce the redundancy of similar network information among different meshes.
Abstract: With the trend of technology innovations in recent years, network heterogeneity and inefficient spectrum usage are the great challenges in Cognitive Radio Networks (CRNs). As one of the solutions for efficient heterogeneous network information delivery in CRNs, a common broadcast signaling channel named Cognitive Pilot Channel (CPC) is proposed with its large coverage and easy implementation characteristics in contrast to usually inefficient and time-consuming spectrum sensing techniques. In order to improve the accuracy of network information delivery, the geographical regions are divided into small meshes and the network information in each mesh is broadcast one by one. This paper proposes an efficient coding scheme for broadcast CPC, called Differential Mesh Information Coding (DMIC), to reduce the redundancy of similar network information among different meshes. The strategies of choosing the basic mesh with popular commonality and quantizing the differential information among meshes are also proposed and proved by numerous results.
4 citations
Cites background from "3G Evolution : HSPA and LTE for Mob..."
...Keywords-cognitive pilot channel; cognitive radio; cognitive radio networks; diffential mesh information coding I. INTRODUCTION Recent years have witnessed a great many innovations in wireless communication networks, which include the 3rd generation (3G) technologies putting into commercial use and accelerating standardizations aiming at Long Term Evolution (LTE) and Long Term Evolution Advanced (LTE-A) [1]-[2] in the coming years....
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...Recent years have witnessed a great many innovations in wireless communication networks, which include the 3rd generation (3G) technologies putting into commercial use and accelerating standardizations aiming at Long Term Evolution (LTE) and Long Term Evolution Advanced (LTE-A) [1]-[2] in the coming years....
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01 Jan 2012
TL;DR: In this article, the authors propose a method to solve the problem of the problem: this article... ]..,.. )].. [1].
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4 citations
TL;DR: This paper skips simulations and proposes an IP transmission delay and average throughput analytical estimation using mathematical modeling based on probability delay analysis, thus offering to cell planners a useful tool for analytical estimation of uplink average IP transmission.
4 citations