By Christopher Cox
Following on from the profitable first variation (March 2012), this booklet supplies a transparent clarification of what LTE does and the way it really works. The content material is expressed at a platforms point, delivering readers the chance to know the major components that make LTE the new subject among proprietors and operators around the globe. The booklet assumes not more than a simple wisdom of cellular telecommunication structures, and the reader isn't really anticipated to have any prior wisdom of the complicated mathematical operations that underpin LTE.
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Extra info for An Introduction to LTE (2nd Edition)
We can see right away that these figures exceed the capabilities of LTE. 2 Requirements of LTE-Advanced Driven by the ITU’s requirements for IMT-Advanced, 3GPP started to study how to enhance the capabilities of LTE. The main output from the study was a specification for a system known as LTE-Advanced , in which the main requirements were as follows. LTE-Advanced was required to deliver a peak data rate of 1000 Mbps in the downlink, and 500 Mbps in the uplink. In practice, the system has been designed so that it can eventually deliver peak data rates of 3000 and 1500 Mbps respectively, using a total bandwidth of 100 MHz that is made from five separate components of 20 MHz each.
It processes the packet, adds a header to describe the processing it has carried out, and outputs the result as a protocol data unit (PDU). This immediately becomes the incoming service data unit of the next protocol down. The process continues until the packet reaches the bottom of the protocol stack, at which point it is transmitted. The receiver reverses the process, using the headers to help it undo the effect of the transmitter’s processing. This technique is used throughout the radio access and core networks of UMTS and GSM.
25 MHz. info 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. The first two issues hindered the penetration of WCDMA into the North American market, where there were few allocations of bandwidths as wide as 5 MHz and there were a large number of legacy IS-95 devices. The final 3G technology is Worldwide Interoperability for Microwave Access (WiMAX).