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3G Evolution, 2nd Edition by Per Beming, Johan Skold, Stefan Parkvall, Erik Dahlman

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Chapter 20. Flexible Bandwidth in LTE

Spectrum flexibility is a key feature of the LTE radio access and is set out in the LTE requirements [86]. It consists of several components, including deployment in different-sized spectrum allocations and deployment in diverse frequency ranges, both in paired and unpaired frequency bands.

There are a number of frequency bands identified for mobile use and for IMT-2000 today. Most of these bands are already defined for operation with WCDMA/HSPA, and LTE is the next step in the 3G evolution to be deployed in those bands. Both paired and unpaired bands are included in the LTE specifications. The additional challenge with LTE operation in some bands is the possibility of using channel bandwidths up to 20 MHz. ...

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