Beijer Electronics korenix JetWave 3220v3 Series, Руководство пользователя

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JetWave 3220v3/3420v3 Series User Manual
Page 17
2.4
WIFI Antenna
The JetWave 3220v3 series WIFI radio supports IEEE 802.11ac 2T2R (2 Transmit 2 Receive)
Multiple-input Multiple-output (shot of MIMO) technology, is the use of dual polarization antenna
to double the communication performance than traditional 1T1R SISO (Single-in Single-out).
MIMO & Dual Polarization
What is MIMO:
With the rising data rates and signal congestion, the
MIMO is the proposed radio technology in IEEE
802.11ac and accepted popularly. MIMO is short of the Multiple-Input and Multiple-Output, is the
use of multiple antennas at both the transmitter and receiver to increase the wireless
communication bandwidth, for example the 2T2R means 2 Transmitter and 2 receiver, then the
bandwidth is double than SISO. MIMO technology offers significant increases in data throughput
without additional bandwidth or increased transmit radio power.
The below figure shows the SISO technology, each transmitter and receiver has single radio.
The below figure shows the MIMO technology, the transmitter and receiver
spread the total transmit
power to 2 (or more) different radio antenna
for communication.
Polarization:
What is polarization
Polarization is a property of wireless antenna, the polarization determines the antennas that can
pick up the signal, for example you can set up two antennas in close and pointing to the same