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REDES DE COMPUTADORAS
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Suppose a signal is represented by x(t)x(t)x(t) in the time domain and by X(f)X(f)X(f) in the frequency domain.
Suppose the impulse response of a linear time-invariant system is represented by h(t)h(t)h(t) in the time domain and by H(f)H(f)H(f) in the frequency domain.
When the signal passing through the system, what are the correct statements about the output?
Given a transmitted signal, how to determine its bandwidth?
Choose all necessary elements.
In Chapter 17 of the latest IEEE 802.11 standard (2020 version), for a specific channel spacing, what are the elements that specify the requirements of the transmitted signal?
To understand the characteristics of an optical fiber, an engineer measure the fiber's impulse response.
What are the necessary elements to find the bandwidth of the optical fiber?
To understand the characteristics of a wireless channel, an engineer measure the channel impulse response.
What are the necessary elements to find the bandwidth of the channel?
The ratio of two powers is 53dB. Calculate the actual ratio.
The ratio of two powers is -26.6dB. Calculate the actual ratio.
The ratio of two powers is 0.395525. Calculate the Decibel (dB) value for 0.395525.
The ratio of two powers is 117174.8. Calculate the Decibel (dB) value for 117174.8.
The ratio of two powers is 98dB. Calculate the actual ratio.