| SDH Radio |
Synchronous Digital Hierarchy
3000 Series SDH Digital Microwave Radio Systems
ITI offers a variety of SDH radio systems for long-haul , which can be applied as a trunk-link system connecting switching nodes or backup system to fiber optics transmission systems.
Short-haul transmission radio , often applied as access system in urban areas , cover the 18 and 26 GHz band .
Features
- Conforming to ITU-T , ITU-T and ETSI standard .
- Compatibility with existing frequency allocations
- Frequency-efficient modulation scheme:
128 QAM for 28 MHz to 30 MHz spacing
64 QAM for 40 MHz spacing
16/32 QAM for 55 MHz spacing
- MLCM (Multi Level Coding Modulation ) for improved error performance
- TMN (Telecommunications Management Network )
interface compatible with ITU-T
- Fading equalizers and space/frequency diversity configuration as a countermeasure against fading
- Error-less N+1 protection switching
- Wayside traffic and digital service channel transmission
- Digital XIPC (Cross Polarization Interference Canceller )
- ATPC (Automatic Trans mission Power Controller )
- PDH (Plesiochronous Digital Hierarchy ) compatible-existing hierarchy interface available
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