User's Manual
Table Of Contents
- Chapter 1: OVERVIEW
- Chapter 2: INSTALLATION
- Chapter 3: WEB GUI
- Initial configuration
- Over The Air
- Networking
- Performance
- System
- FW ( Firmware upgrade
- Configuration ( IP configuration
- Configuration ( SNMP configuration
- Configuration ( Configuration file
- Configuration ( System configuration
- Diagnostic ( Loopback configuration
- Diagnostic ( Download troubleshooting file
- Tools ( License management
- Tools ( Console
- About ( About System
- About ( Copyright
- Chapter 4: INTERFACES
- CONTACTS
INTEGRA User Manual WEB GUI
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Over The Air à Equalizer graph
Integra features adaptive equalizer, which is a filter that automatically adapts to time-
varying properties of a communication channel with selective fading, having a target to
compensate the inequalities in frequency response, mitigating the effects of multipath
propagation. In wireless telecommunications, using QAM modulation this filter equalizes not
only a separate quadrature channel, but provides a cancellation of cross-interference
between them.
In Integra the adaptive equalizer is realized as complex-arithmetic 40-taps digital FIR
(Finite Impulse Response) filter. In other words, equalizer is a selective frequency amplifier
and attenuator, a device, which application to IF (Intermediate Frequency) band-limited
signal is schematically shown in the picture below:
Equalizer graph window shows adaptive equalizer taps’ coefficients, which at a set time
moment minimize multipath fading effect in channel.
Example of equalizer taps’ coefficients and its frequency response in case of a normal
operation is shown below:
SAF Tehnika JSC