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Communication channel simulation equipment

HF channel simulation equipment

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HF channel simulation equipment is used for channel modeling and testing of short band (1MHz ~ 30MHz) communication system, reducing the difference between laboratory test and field test, and accelerating the design and evaluation process of communication system. In terms of fading, the channel simulation equipment uses its model and HF channel model based on a large number of test data. When the longitude and latitude of the receiving and transmitting stations are in China, the self-developed HF channel model is automatically called; when the longitude and latitude of the receiving and transmitting stations are outside China, the its model is automatically called.

Equipment performance index

  • Functional indicators:

Three types of empirical models for HF channel

1. Support large scale fading model: free space loss, ionospheric absorption loss and shadow fading effect;

      2.  Support small scale fading model: use its model, in which the Doppler spectrum shape supports Gauss and Lorentz;

      3.  Support HF channel statistical empirical model injection.

  • Performance index:

      1.  RF signal input index:

         a)  RF input port: 4;

          b)  RF signal input frequency range: 1MHz ~ 30MHz;

          c)  Input level range: 0dbm ~ - 30dBm;

      2.  RF signal output index:

          a)  RF output port: 4;

          b)  RF signal output frequency range: 1MHz ~ 30MHz;

          c)  Output level range: 0 ~ - 100dbm;

          d)  Input output interface impedance: 50 Ω;

          e)  Output level accuracy: 1dB;

          f)  In band gain flatness: 1dB;

          g)  Output SFDR: 60dB.

          h)  RF signal processing bandwidth: 30MHz.

      3.  RF signal programmable index:

          a)  Four independent central frequency points are supported;

          b) Output level step: 0.1dB;

          c)  Adjustable range of output level: 0dbm ~ - 30dBm;

          d)  Support 4 * 4 MIMO;

      4.  Channel parameter index:

          a)  Delay range: 0 ~ 10ms, step:?

          b)  Number of multipaths supported:

(1) when the delay precision is 5 ns, the maximum support is 16 paths;

(2) when the delay precision is 0.1ns, the maximum support is 4 paths.

          c)  Path delay accuracy: 0.1ns (precision of relative delay difference of multi-path);

          d)  Scale fading index:

             ①  Dynamic range of small scale fading: 0 ~ 60dB;

             ②  Dynamic range of large scale fading: 0 ~ 100dB;

          e)  Gain accuracy: 0.1dB;

          f)  Doppler shift:

             ①  Frequency range: 0 ~ 100kHz;

             ②  Doppler accuracy: 1 Hz;

          g)  Phase shift:

             ①  Phase shift: 0 ~ 2 π or 0 ~ 360 °;

             ②  Phase migration accuracy: 1 °;

          h)  Noise index:

             ①  Type: Gaussian white noise;

             ②  Maximum noise bandwidth: 30MHz.

application area

  • Construction of complex electromagnetic environment and short wave test

  • Hardware in the loop simulation of HF channel



If you have more information about the products, please call 010-62660808.

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