ISRO Electronics & Communication (ECE) 2015 - Question 77

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Topic: Communication Systems

A communication channel is having a bandwidth of 3000 Hz. The transmitted power is such that the received Signal-to-Noise ratio is 1023. The maximum data rate that can be transmitted error-free through the channel is:

  • A. 3 kbps
  • B. 30 kbps
  • C. 3 Mbps
  • D. 300 kbps

Answer: B. 30 kbps

Explanation: BW = 3000 Hz, SNR = 1023. Channel capacity C = B log_2(1 + SNR) = 3000 log_2(1024) = 30 kbps. From Shannon-Hartley law C ≥ R, so maximum data rate for error-free transmission is 30 kbps.

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