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Lecturing Notes 3
Lecturing Notes 3

... Instructor: Professor Xi Zhang ...
Wireless Communications
Wireless Communications

... 3G networks promise next-generation service with transmission rates of 144Kbps and higher that can support multimedia applications, such as video, video conferencing and Internet access. Both UMTS (WCDMA) and EDGE will support 3G services. 3G networks operate on a different frequency than 2G network ...
Introduction
Introduction

...  Connected sequence of physical links between nodes  Logical channel dedicated on each link  Rapid transmission  The most common example of circuit switching is the telephone network ...
WiMAX Protocol - London South Bank University
WiMAX Protocol - London South Bank University

...  Most WiMax backers, including Clearwire in the United States (which has already built WiMax networks in many US cities), have signalled their intent to move across to LTE. It was never cost effective for WiMax networks to compete effectively against fixed-line broadband networks.  What happened w ...
Demonstrating the Optimal Placement of Virtualized Cellular
Demonstrating the Optimal Placement of Virtualized Cellular

... of control and user plane. Such a component is the Serving Gateway (SGW), which switches GTP (GPRS Tunneling Protocol) tunnels in LTE networks. Usually, per ⇡ 10 mio. subscribers, 10 SGW devices are in use and statically placed with respect to normal traffic demand. In case of “Mega” events, however ...
Chapter 1 - Introduction
Chapter 1 - Introduction

... It often has much higher bandwidth ...
Chapter 13: Wireless Networks
Chapter 13: Wireless Networks

... Communication facilities must be installed at low initial cost. The same information must be broadcast to many locations. ...
Chapter 14 - William Stallings, Data and Computer Communications
Chapter 14 - William Stallings, Data and Computer Communications

... the fire of 1805, Judge Woodward was the central figure involved in reestablishing the town. Influenced by Major Pierre L’Enfant’s plans for Washington, DC, Judge Woodward envisioned a modern series of hexagons with major diagonal avenues centered on circular parks, or circuses, in the center of the ...
Wireless data transfer – GSM
Wireless data transfer – GSM

... order modulation (64QAM) • The 56 Mbit/s and 22 Mbit/s represent theoretical peak sector speeds. The actual speed for a user will be lower ...
cellular - D
cellular - D

... them further with additional antenna techniques such as higher-order MIMO. ...
IOSR Journal of Computer Engineering (IOSR-JCE) e-ISSN: 2278-0661,p-ISSN: 2278-8727 PP 10-14 www.iosrjournals.org
IOSR Journal of Computer Engineering (IOSR-JCE) e-ISSN: 2278-0661,p-ISSN: 2278-8727 PP 10-14 www.iosrjournals.org

... and outdoors, with premium quality and high security [1]. Fourth generation networks are likely to use a combination of WiMAX and Wi-Fi technologies [2]. 4G is intended to provide high speed, high capacity, low cost per bit, IP based services. The goal is to have data rates up to 20 Mbps, even when ...
Preparation of Papers in Two-Column Format
Preparation of Papers in Two-Column Format

... provides high-speed data services for mobile devices with broadcasted bandwidths matching and even exceeding the home broadband network speeds. Recent work [11] has indicated the power model of the LTE network. Compared to 3G, LTE provides the guarantee of higher energy efficiency as a result of a n ...
< 1 2 3 4

4G

4G, short for fourth generation, is the fourth generation of mobile telecommunications technology, succeeding 3G and preceding 5G. A 4G system, in addition to the usual voice and other services of 3G, provides mobile broadband Internet access, and over some networks voice services (known as VoLTE). Potential and current applications include amended mobile web access, IP telephony, gaming services, high-definition mobile TV, video conferencing, 3D television, and cloud computing.Two 4G candidate systems are commercially deployed: the Mobile WiMAX standard (first used in South Korea in 2007), and the first-release Long Term Evolution (LTE) standard (in Oslo, Norway and Stockholm, Sweden since 2009). It has however been debated if these first-release versions should be considered to be 4G or not, as discussed in the technical definition section below.In the United States, Sprint (previously Clearwire) has deployed Mobile WiMAX networks since 2008, while MetroPCS became the first operator to offer LTE service in 2010. USB wireless modems were among the first devices able to access these networks, with WiMAX smartphones becoming available during 2010, and LTE smartphones arriving in 2011. 3G and 4G equipment made for other continents are not always compatible because of different frequency bands. Mobile WiMAX is not available for the European market as of April 2012.
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