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Why LTE is successful but WiMax is failure though both are OFDMA technology

+1 vote
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From the access network point of view both uses OFDMA/SC-FDMA though core part is different in both the cases. Despite being the first adopter of OFDMA what could be the possible reason of the WiMax failure. And what are the factors which favored the LTE.

posted Aug 3, 2013 by Salil Agrawal

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1 Answer

+2 votes
 
Best answer

I can think of multiple reasons and OFDMA has nothing to do with the failure of WiMax.

  • WiMax as the name indicates started as a Fixed wireless internet access as an extension to WiFi, the mobility version came later. By the time the mobility versions came, LTE initiative was already started by the major telecom companies.
  • WiMax is complete new standard including new core network nodes, which means a lot of work to migrate and inter operate with older technologies. LTE also adds new nodes, but the natural progression is there and inter-operability is clearly defined even with non-3gpp access. Some of the protocols are defined as upgrades to earlier versions, the terminologies remain almost the same.
  • None of the major telecom operators (read AT&T, Verizon, VodaFone etc...) were part of the WiMax forum.
  • OFDMA is power hungry and hence LTE uses SC-FDMA for uplink. OFDMA is used only for downlink.
answer Aug 4, 2013 by Balaji Rajappa
Similar Questions
+1 vote

As per my understanding WiMax do interconnect with LTE as other 3GPP technologies, as other technologies i.e. 3GPP or 3GPP2 has migration plan from their respective technologies to LTE in phases do WiMax service provider also has similar plan or do they have any technology hurdle.

+1 vote

I was going through the OFDMA wiki page (http://en.wikipedia.org/wiki/Orthogonal_frequency-division_multiple_access) it seems that it is registered trademark of http://www.runcom.com/ and giving the impression of OFDMA is new technology. But while Googling further I found that it was invented in 1957 [ Kineplex, multi-carrier HF modem (R.R. Mosier & R.G. Clabaugh)]

Now the question is why telecom industry took so much of time to adopt OFDMA as access technology in the form of LTE/WiMax. Was there some reason or it was ignorance of telecom industry?

0 votes

what is the coverage area or you can say transmission range of WiFi (802.11p), eNB and a WiMAX node? Is there any difference in the area of three nodes?


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