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21/02/2013

Which 4G Modem is Good for TDD network?

More and more 4G networks are launched to commercial as time being, many users want to have their own mobile gadgets to experience faster surfing speed. However, there are so many 4G modems on the market now, which one is better? It's a good question. First, we should know some knowledge about 4G Network. LTE and WiMAX are two most popular 4G Network. Since LTE dominates the 4G trend. Today, we would introduce 4G modem for LTE network.  

 

As the most popular 4G network, LTE uses TDD and FDD technologies to transmit the data. Subsequently, there are 4G TDD modemand 4G FDD modem. They both have special advantages and weakness. This is not our topic today. Today we talk about the 4G modem for TDD network, i.e. 4G TDD Modems.  

 

TDD Frequencies Band & Spectrum

LTE BAND NUMBER    ALLOCATION (MHz)      Wideth of band(MHz)

33                                 1900 - 1920                              20

34                                 2010 - 2025                              15

35                                 1850 - 1910                              60

36                                 1930 - 1990                              60

37                                 1910 - 1930                              20

38                                  2570 - 2620                             50

39                                 1880 - 1920                             40

40                                 2300 - 2400                             100

41                                 2496 - 2690                             194

42                                 3400 - 3600                             200

43                                 3600 - 3800                              200

 

Below are the top TDD Modems that are good for 4G TDD networks:  

 

4G modems for band 38(2600MHz):

  1. Asiatelco ALT-C180 .
  2. Asiatelco ALT-C186
  3. Asiatelco ALT-C187
  4. Huawei E392-92
  5. ZTE MF820S2
  6. ZTE MF820T
  7. ZTE MF880
  8. HUAWEI E392u-21

 

4G modems for band 40(2300MHz): 

  1. Asiatelco ALT-C160,
  2. Huawei E392-92,
  3. ZTE MF820S2 .
  4. ZTE MF880
  5. ZTE MF820T

 So if you are hesitate on which TDD Modem to choose/buy, hope above information would help you make the decision. But since the TDD modems for rest bands are very few, we will make a summary next time about 4G LTE dongles.  

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