What is a MIMO technology?
MMO is a technology, we used this technology in a microwave links, it is mean multi input multi output antenna .
What is its working mechanism?
we use more than one antenna to send a traffic , and more than one antenna in a receive at one Carrier frequency .
Why do we use this technology?
Increase data rate and capacity
Improve signal performance
Less fading and errors
spectrum utilization
how it works?
We send traffic to more than one stream, and every stream We send it on antenna, We must put a space between the antenna (Vertical or horizontal separate) . and We must use (dual polarized antenna) this is important.
The distance between the antanna is calculated by :
Squat Root ( D * C / 2F )
C .. the speed of signal in air
D .. distance from site to facing
F .. frequency of the Transmit antennas
Important:
we used modulation 1024 QAM Maximum, and Maximum channel spacing 56MHz, And less channel spacing 28MHz.
What is the links in Huawei That support this technology?
Huawei RTN 950A
Huawei RTN 980
Huawei RTN 380
What is IF Board in Huawei support this technology?
ISM6 board :
