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gaganpreet Kaur
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Hi alsitu changing sequence length to 512 from 128 did not help it just made processing time higher. pls can somebody tell me how to set cut off frequency, sample rate , bit rate in optical receiver. i mean what relationship do they hold so that change in one value effects other . my ouput OSNR is as high at 35 dB power is 10^-3 mW but BER and eye diagram not coming. sam is right i am literally struggling to get permissible BER. i fail to understand under what setting of sample rate, cut off etc output comes . sometimes no output is there no graphs no value of Q factor, BER evn when electrical power meter shows output.

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