Question

For Networks -> Please show me how to calculate:

1.)   The maximum data rate of a signal using the Nyquist theorem.

2.)   The maximum bit rate of a signal using the Shannon’s theorem.

3.)   How much bandwidth is there in 0.1 microns of spectrum at a wavelength of 1micron?

Answer 1

1)

According to Nyquist theorem, the maximum data rate is equal to 2B log_2^V

2)

According to Shannon's theorem, the maximum data rate = B log_2(1+S/N)

3)

using the equation

delta_f = c * delta_lambda / (lambda*lambda)
where delta_f is the bandwidth range,
c is the light speed,
delta_lamba is the wavelength range,
and lambda is a certain wavelength.
Therefore,
delta_f
= 3*10e8 * 0.1*10e-6 / (10e-6 * 10e-6)
= 3*10e13Hz
= 30THz

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solved all the question

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