Description

Digital Microwave Link systems

The innovative series of Digital Microwave Links for fixed and mobile applications represent the latest development based on  digital and microwave technological knowledge and experience

These are agile synthesized Digital Links (also usable with analog signals), extremely compact, flexible and competitively priced.

The series represent a big step towards diffusion and application of the latest digital technologies.

KEY FEATURES

 Capable to carry up to #6 different MPEG Transport Streams
 Transparent mode to carry SFN Transport Streams (also including ISDB-T/Tb BTS)
 High capacity: over 100Mbit/s total net bit rate in 28MHz RF bandwidth
 Frequency Agile in its range (typically 500MHz)
 Several frequency range available (6, 7, 8, 10, 13, 14 GHz – other on request)
 Fixed (STL) and mobile (with tripods) applications
 RF heads for outdoor and indoor applications
 Standard input/output interface: ASI – On request: Ethernet for T.S. over IP
 Analog Video/Audio in/out interfaces (versions with embedded MPEG codecs)

MAIN BENEFITS

Use of the most advanced standard (DVB-S2) for backhauling and contribution in Television Broadcasting

 NO proprietary modulation schemes and FEC codes (DVB-S2 modulation schemes up to 32APSK are employed)
 NO proprietary aggregation systems – The aggregation of the Transport Streams (up to #6) is made employing the DVB-S2 MULTISTREAM mode
 NO proprietary encryption: DVB-S2 Physical Layer scrambling implemented

Efficient use of the electromagnetic spectrum

 No overhead for encapsulation to carry multiple Transport Streams
 Very high efficiency Forward Error Correction Codes (LDPC + BCH)
 No fixed capacity: parameters (bandwidth, FEC codes, etc.) are optimized in order to obtain the best performance according to the available bandwidth and needed capacity

TECHNICAL SPECIFICATIONS GENERAL SPECIFICATIONS

Frequency range DML 2: 2.15 – 2.70 GHz DML 7: 5.70 – 6.54 GHz; 6.54 – 7.50 GHz; 7.50 – 8.60 GHz; DML 10: 10.10 – 10.90 GHz DML 13: 12.70 – 13.75 GHz DML 14: 14.00 – 14.50 GHz For other frequency ranges please contact ABE sales office IF frequency L-band 950 – 2150 MHz Modulation standards DVB-S (EN 300 241) – QPSK-8PSK-16QAM DVB-S2 (EN 302 307) – QPSK-8PSK-16APSK-32APSK DVB-T (EN 300 744) – QPSK-16QAM-64QAM For other modulation standards please contact ABE sales office Operating temperature range-5 to +45°C (indoor units)-30 to +50°C (outdoor units) Maximum operative humidity 95% non condensing Housing Standard rack 19” 1U (indoor units) Sealed box (outdoor units) LINK PERFORMANCE Occupied bandwidth Up to 40 MHz – According to Symbol Rate and Roll-off factor Link capacity Up to 100Mbit/s – According to modulation scheme, code rate, Symbol Rate, etc. Receiver minimum input signal Up to less than -100dBm – According to modulation, code rate, Symbol Rate, etc. Example Standard DVB-S2, Symbol Rate 16MS/s, roll-off 25% , code rate 3/4, modulation scheme 8PSK Net input bit-rate (TS bit-rate/Link capacity) is up to 34.8Mbit/s in the same occupied bandwidth (around 20MHz) of an analog TV microwave link. Receiver threshold is around -90dBm