User's Manual

Chapter 3 - Configuration
Technical User Manual
InfiLINK XG
52
Real time radio link status - displays the following parameters of the radio link
in real time for both the local and remote unit:
Parameter Description
Tx capacity
Displays the maximum transmission capacity expressed
in Kbps for the current modulation and coding scheme; if
the MCS changes, the Tx capacity will also change
accordingly
Tx Frequency
Displays the center Tx frequency expressed in MHz
Tx/Rx Frames
Displays the number of transmitted and received air
frames
Rx Bad frames
Displays the number of air frames received with errors
for which the Control Block cannot be correctly decoded
Rx Acc FER
Displays the Frame Error Ratio, meaning the percentage
of frame loss (air frames that cannot be decoded divided
by the total number of air frames received)
Tx parameters
MCS
Displays the modulation and coding scheme that is in
use at Tx
side. There are 10 MCS schemes available
and if the AMC is set to auto, the MCS will dynamically
change its value based on the link quality (at both units -
local and remote)
For example, for QAM256 7/8 (8), “QAM256” is the
modulation in use, “7/8” is the coding scheme in use (for
every 7 data bits encoder produces 8 bits to be sent
over the air) and “(8)” represents the index of the MCS
in use
Power
Displays the current power level of the Tx signal for
each radio chain in dBm
Rx parameters
MCS
Displays the modulation and coding scheme that is in
use at Rx side. The representation is similar to that for
Tx part
CINR
Displays Carrier to Interference and Noise Ratio
measured in downlink and expressed in dB
CINR can be limited either due to too low signal level or
because of the interference from other radios
AMC algorithm makes its decisions based on the CINR