Redline Communications Inc. AN100UXA Manual De Usuario
User
AN-100U/UX Base Station
Manual
70-00058-01-04
Proprietary Redline Communications © 2010
Page 72 of 136
April 19, 2010
Figure 32: Web: Admin Tools - Advanced Configuration Screen
Enable: Check to enable adaptive modulation. Enabling this control disables the
default modulation settings.
default modulation settings.
Default DL Modulation: Select the default modulation and coding rate for the downlink
channel. This value is used only when Adaptive Modulation is disabled. When Adaptive
Modulation is disabled the base station will transmit data only using the selected
modulation/coding.
channel. This value is used only when Adaptive Modulation is disabled. When Adaptive
Modulation is disabled the base station will transmit data only using the selected
modulation/coding.
Default UL Modulation: Select the default modulation and coding rate for the uplink
channel. This value is used only when Adaptive Modulation is disabled. When Adaptive
Modulation is disabled the base station will receive data from subscribers only using the
selected modulation/coding.
channel. This value is used only when Adaptive Modulation is disabled. When Adaptive
Modulation is disabled the base station will receive data from subscribers only using the
selected modulation/coding.
Thresholds:
Enter the adaptive modulation threshold values (dB) for each modulation (based on
measured CINR). The values are used only when Adaptive modulation is enabled. There
are two entry fields for each threshold setting (row):
measured CINR). The values are used only when Adaptive modulation is enabled. There
are two entry fields for each threshold setting (row):
- Minimum Entry Threshold (right column)
- Mandatory Exit Threshold (left column)
The modulation/coding is decreased by one step under the following conditions:
1.
CINR drops below the exit threshold of the current CINR
2.
CINR is between the entry threshold and exit threshold of the current UIUC and CRC
errors are detected in the uplink channel
errors are detected in the uplink channel
Settings must be adjusted to match the characteristics of each deployment. Refer to the
following table for recommended threshold settings. These are applicable for
independent sector operation. Co-channel sector deployment in a cell may require
further optimization of the Adaptive Modulation settings.
following table for recommended threshold settings. These are applicable for
independent sector operation. Co-channel sector deployment in a cell may require
further optimization of the Adaptive Modulation settings.
Table 30: System - Wireless - Adaptive Modulation Threshold Settings
Threshold Setting
CINR
Threshold Setting
CINR
64 QAM 3/4 => 64 QAM 2/3
23.25 dB
64 QAM 3/4
<= 64 QAM 2/3
24 dB
64 QAM 2/3 => 16 QAM 3/4
21.75 dB
64 QAM 2/3
<= 16 QAM 3/4
22.5 dB
16 QAM 3/4 => 16 QAM 1/2
18 dB
16 QAM 3/4
<= 16 QAM 1/2
18.375 dB
16QAM 1/2 => QPSK 3/4
15 dB
16 QAM 1/2
<= QPSK 3/4
15.75 dB
QPSK 3/4 => QPSK 1/2
11.625 dB
QPSK 3/4
<= QPSK 1/2
12 dB
QPSK 1/2 => BPSK 1/2
9 dB
QPSK 1/2
<= BPSK 1/2
9.375 dB