Interest in TD-LTE, the version of LTE slated to run in the unpaired spectrum known as Time Division Duplex, has heated up rapidly--so much so that TD-LTE equipment maturity doesn't fall behind FDD (Frequency Division Duplex) equipment. But the technology still faces challenges thanks to a slow release of spectrum in some areas and the fragmentation of the global LTE market when it comes to the myriad of spectrum bands in which LTE technology will be operating. In a positive development for the technology, China Mobile and Clearwire (NASDAQ:CLWR) recently announced they will collaborate to speed up the development of TD-LTE devices and develop system requirements. However, challenges for the ecosystem remain. Special report
