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Forum Discussion
Which TDD Settings are supportet? TDD/FDD CA? TDD 4x4 MIMO?
I have a M1 Nighthawk MR1100 EUS
In the data sheet the Bands 1,3 and 7 are listet for 4x4 MIMO support.
The 2600 TDD Band (Band 38) can use 4x4 MIMO?
My provider is use Band 38 for tests at the moment.
But the Upload 10 MBit is not very hight.
Which settings /Upload/Download are supportet, can the M1 use QAM256/QAM64 on TDD too?
Carrier Agregation support between TDD and FDD Bands?
Example: Band 3+1+38
5 Replies
Schutti wrote:
The 2600 TDD Band (Band 38) can use 4x4 MIMO?
No, with TDD Bands you can't use 4x4 MIMO mode. With MR1100-100EUS you can use 4x4 MIMO mode with LTE FDD Bands 1, 3 and 7, includiung some FDD-only 3CA combinations with these bands.
Schutti wrote:
Which settings /Upload/Download are supportet, can the M1 use QAM256/QAM64 on TDD too?
Yes, 256QAM is working even with TDD bands (for downlink). It's a modem chipset function.
Schutti wrote:
Carrier Agregation support between TDD and FDD Bands?
MR1100-100EUS should work with such FDD + TDD combinations:
- CA_3_40;
- CA_3_41;
- CA_1_3_41.
A whats with QAM64 in Upload?
Band 40 and 41 are not in use in Europe.
Here is Band 38 in use with TDD.
Is there a Combination with Band 38 and Band 1,3 or 7?
There are different settings with TDD, like 3:1 or 1:1.
Which are supportet by the M1 Nighthawk?
https://www.youtube.com/watch?v=G9Q9aB4sefk
Where can I see all CA Combinations of the M1?
One more question:
In the PDF: 4x4 MIMO for Band 1,3 and 7.
Band 7 (FDD) and Band 38 (TDD) are both 2600 MHz.
Can 4x4 MIMO be used by the M1 on Band 38?