Americas, Special Report, Opinion

[AprpdlNuh]

With innovations such as network sharing and hybrid networks budding in the market off late, WiMAX players have immense opportunity; which still remains untapped. TDD is preferred over FDD for WiMAX operations, owing to its flexibility in handling both symmetric and asymmetric broadband traffic. Moreover, TDD saves bandwidth since it uses half the spectrum, as compared to FDD. This, in turn, makes a TDD system cheaper and less complex. As most of the WiMAX traffic comprises asymmetrical data, major WiMAX deployments are being implemented in the TDD mode, thereby facilitating industry players with spectrally efficient alternatives, reducing their OPEX. Spectrum licensing has various effects on technology; in terms of bandwidth, power, and interference. Since the licensed frequency bands are allocated only to licensees, the interference in these bands is relatively low, thereby benefiting the end-user. In such a scenario, WiMAX operators are at an advantage as they have the flexibility to invest in the licensed bands, thereby being facilitated with superior signal quality. At the same time, licensed bands are usually expensive as they are auctioned out on a nationwide level. With 5 GHz being a globally recognized unlicensed WiMAX band, medium to small operators find it easier to venture into the license-exempt market as they are not required to compulsorily buy the spectrum, hence providing further flexibility to WiMAX operators.




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