An Introduction to LTE: LTE, LTE-Advanced, SAE, VoLTE and 4G by Christopher Cox

By Christopher Cox

Following on from the profitable first version (March 2012), this booklet offers a transparent clarification of what LTE does and the way it really works. The content material is expressed at a platforms point, supplying readers the chance to understand the main components that make LTE the recent subject among proprietors and operators around the globe. The publication assumes not more than a simple wisdom of cellular telecommunication platforms, and the reader isn't really anticipated to have any prior wisdom of the advanced mathematical operations that underpin LTE.

This moment variation introduces new fabric for the present kingdom of the undefined, resembling the hot positive aspects of LTE in Releases eleven and 12, particularly coordinated multipoint transmission and proximity providers; the most brief- and long term suggestions for LTE voice calls, particularly circuit switched fallback and the IP multimedia subsystem; and the evolution and present kingdom of the LTE marketplace. It additionally extends a number of the fabric from the 1st variation, reminiscent of inter-operation with different applied sciences equivalent to GSM, UMTS, instant neighborhood sector networks and cdma2000; extra beneficial properties of LTE complex, particularly heterogeneous networks and site visitors offloading; information delivery within the developed packet middle; insurance and potential estimation for LTE; and a extra rigorous therapy of modulation, demodulation and OFDMA. the writer breaks down the method into logical blocks, through at the start introducing the structure of LTE, explaining the
techniques used for radio transmission and reception and the final operation of the method, and concluding with extra really good issues akin to LTE voice calls and the later releases of the requirements. This methodical process permits readers to maneuver directly to take on the requisites and the extra complicated texts with confidence.

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Additional info for An Introduction to LTE: LTE, LTE-Advanced, SAE, VoLTE and 4G Mobile Communications

Example text

3 4G Communication Systems Following the submission and evaluation of proposals, the ITU announced in October 2010 that two systems met the requirements of IMT-Advanced [15]. 0. Qualcomm had originally intended to develop a 4G successor to cdma2000 under the name Ultra Mobile Broadband (UMB). However, this system did not possess two of the advantages that its predecessor had done. Firstly, it was not backwards compatible with cdma2000, in the way that cdma2000 had been with IS-95. Secondly, it was no longer the only system that could operate in the narrow bandwidths that dominated North America, due to the flexible bandwidth support of LTE.

The specifications for IS-95 and cdma2000 are produced by a similar collaboration to 3GPP, which is known as the Third Generation Partnership Project 2 (3GPP2) [3]. There are three main technical differences between the air interfaces of cdma2000 and UMTS. 25 MHz. Secondly, cdma2000 is backwards compatible with IS-95, in the sense that IS-95 mobiles can communicate with cdma2000 base An Introduction to LTE 8 stations and vice-versa, whereas UMTS is not backwards compatible with GSM. Thirdly, cdma2000 segregates voice and optimized data onto different carrier frequencies, whereas UMTS allows them to share the same one.

They were originally designed just for voice, but were later enhanced to support instant messaging through the Short Message Service (SMS). The most popular 2G system was the Global System for Mobile Communications (GSM), which was originally designed as a pan-European technology, but which later became popular throughout the world. Also notable was IS-95, otherwise known as cdmaOne, which was designed by Qualcomm, and which became the dominant 2G system in the United States. The success of 2G communication systems came at the same time as the early growth of the internet.

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