Q. The bit duration is 488 ns. Sampling rate for each channel on 32-channel PCM is 8 KHz encoded into 8 bits. Determine the time slot duration.

View solution

Q. Sampling rate for each speech channel on 32-channel PCM is 8 KHz each encoded into 8 bits. Determine duration of frame with time slot duration of 3.9 μs.

View solution

Q. Sampling rate for each speech channel on 32-channel PCM is 8 KHz each encoded into 8 bits. Determine the duration of multi-frame if duration of a frame is 125 μs.

View solution

Q. Determine excess avalanche noise factor F(M) if APD has multiplication factor of 100, carrier ionization rate of 0.02.

View solution

Q. Compute average number of photons incident at receiver in APD if quantum efficiency is 80%, F (M) = 4, SNR = 144.

View solution

Q. Determine incident optical power if zₘ=864, wavelength = 1 μm.

View solution

Q. Determine wavelength of incident optical power if zₘ=864, incident optical power is -60.7 dB, Bᴛ=1 * 10⁷.

View solution

Q. Determine total channel loss if connector loss at source and detector is 3.5 and 2.5 dB and attenuation of 5 dB/km.

View solution

Q. Determine length of the fiber if attenuation is 5 dB/km, splice loss is 2 dB/km, connector loss at source and detector is 3.5 and 2.5.

View solution

Q. Determine total RMS pulse broadening over 8 km if RMS pulse broadening is 0.6 ns/km.

View solution

Q. Determine RMS pulse broadening over 8 km if total RMS pulse broadening is 5.8 ns/km.

View solution

Q. Determine dispersion equalization penalty if total RMS pulse broadening is 4.8 ns, Bᴛ is 25 Mbits/s.

View solution

Q. Determine RMS pulse broadening with mode coupling if pulse broadening is 0.6 over 8km.

View solution

Q. Determine dispersion equalization penalty with mode coupling of 1.7 ns if Bᴛ is 25 Mbits/s.

View solution

Q. Determine dispersion equalization penalty without mode coupling if Bᴛ is 150 Mbits/s and total rms pulse broadening is 4.8 ns.

View solution

Q. Determine ratio of SNR of coaxial system to SNR of fiber system if peak output voltage is 5V, quantum efficiency of 70%, optical power is 1 mW, wavelength of 0.85 μm.

View solution

Q. Determine the peak output voltage if efficiency is 70%, wavelength is 0.85 μm and output power is 1 mW.

View solution

Q. Determine the efficiency of a coaxial cable system at 17 degree Celsius with peak output voltage 5V, 0.85 μm wavelength and SNR ratio of 1.04 * 10⁴.

View solution

Q. Determine the wavelength of a coaxial cable system operating at temperature 17 degree Celsius at output voltage of 5V, 100Ω impedance, optical power of 1 mW, 70% quantum efficiency.

View solution

Q. Determine the impedance of a coaxial cable system operating at temperature 17 degree Celsius at output voltage of 5 V, 0.85 μm wavelength, optical power of 1 mW, 70% quantum efficiency and SNR ratio of 1.04 * 10⁴.

View solution