Quality factor and Bit rate - Optiwave

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This topic has 1 reply, 2 voices, and was last updated 3 years, 8 months ago by Ahmad Atieh.

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- November 21, 2020 at 10:22 am #68510
  Buki Ojed
  Participant
  Please I would like to know if the quality factor of the eye diagram should increase or decrease at higher bit rates. For example, if the bit rate is 100kbps and the quality factor is 6.96 while at 1Gbps should it increase to 270 that is higher than 100kbps or reduce to 4.35 that is lower than 100kbps. I read some papers that gave an increase in bit rate while the other gave a decrease in bit rate please kindly advise on the correct answer.
  
  Regards,
  
  Buki Ojediran
  Attachments:
  analysis-on-the-effect-of-salinity-in-underwater-wireless-optical-communication.pdf
- November 23, 2020 at 7:00 am #68519
  
  Ahmad Atieh
  Moderator
  
  Dear Buki,
  There is no fixed single trend in the performance in optical communication systems. The system overall performance depends on the specs of many components and the interaction of signals in the channel. Typically, you expect increasing the bit rate to decrease the performance and reduces the Q-factor. However, the system frequency response could be better matched to a higher rate. That will cause the performance to improve. The key is you need to optimize the parameters for your rate, then characterize the system for range/OSNR, etc…
  I hope this helped.
  Regards,
  Ahmad
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