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Global Parameters Discription

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(joined March 2014)
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How can choose global parameters like sequence length,Samples per bit etc? For one application if run with different combinations how will be output effected?
Please provide details these parameters.

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    • #10262

      How can choose global parameters like sequence length,Samples per bit etc? For one application if run with different combinations how will be output effected?
      Please provide details these parameters.

    • #10272
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      To get a reliable BER, we need a long sequence length. But a long sequence length is very time consuming. I usually use a 65536 bit sequence and run 5 iterations with a random seed in the PRBS generator, then average the 5 BERs. For samples per bit, since we are emulating the analog signal, ideally this value should be as large as possible. However, if you are using our new DSP component, according to the Nyquist theory, 2 samples/symbol is enough to recover the signal. Therefore the minimum samples per bit is 2*bit per symbol. Bit per symbol depends on the modulation format (QPSK: 2, 16QAM: 4, BPSK: 1).

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