HTTS
Troposcatter Simulator

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The HTSS is a quad diversity troposcatter channel simulator which interfaces with your radio equipment at 70 MHz IF. The complete digital implementation provides high accuracy and exact repeatability. An integrated AWGN noise source coupled with an internal power meter supports accurate setting of SNR and Eb/No.
The HTSS uses the latest in digital signal processing (DSP) technologies for a flexible, cost effective platform for radio channel simulation of troposcatter communications.

Specifications
System
  • Quad diversity:  1 input channel, 4 output channels

  • Channel model:  16-taps / channel (64 total taps), 100 ns tap spacing, Rayleigh fading

  • System bandwidth:  16 MHz (IF), higher bandwidths available

  • Passband ripple:  + 0.1 dB maximum

  • System gain:  0 dB + 2.0 dB

  • Operating temperature:  +100 to +400 C

  • Supply voltage:  110 – 240 VAC, 50/60 Hz, auto-ranging

Noise Source
  • Implementation:  AWGN, Random PN Sequence

  • Crest factor:  16.7 dB

  • Noise power density:  -98.5 dBm/Hz maximum

Input (x 1)
  • Input connector:  BNC

  • Input IF frequency:  70 MHz

  • Input VSWR:  1.2:1 maximum into 50 ohms

Outputs (x 4)
  • Output connectors:  BNC

  • Output IF frequency:  70 MHz

  • Output VSWR:  1.2:1 maximum into 50 ohms

Control
  • Interface:  Ethernet

  • Software:  PC-based graphical user interface (script files)

Optional BERTS (Bit-Error-Rate Test Set)
  • Data rate:  User customized

  • Interface(s):  User customized

  • Measurements:  Automatic BER waterfall-curve generation

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