said by PastTense:
Could someone clarify what these various flavors of LTE are?
Check this out:
The frame structures for LTE differ between the Time Division Duplex, TDD and the Frequency Division Duplex, FDD modes as there are different requirements on segregating the transmitted data.
LTE FDD using the paired spectrum is anticipated to form the migration path for the current 3G services being used around the globe, most of which use FDD paired spectrum. However there has been an additional emphasis on including TDD LTE using unpaired spectrum. TDD LTE which is also known as TD-LTE is seen as providing the evolution or upgrade path for TD-SCDMA.
In view of the increased level of importance being placed upon LTE TDD or TD-LTE, it is planned that user equipments will be designed to accommodate both FDD and TDD modes. With TDD having an increased level of importance placed upon it, it means that TDD operations will be able to benefit from the economies of scale that were previously only open to FDD operations.--