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We cannot send the digital signal directly to the channel, when the channel is
The difference in the delay of the signal may create a difference in
Signal to Noise Ratio is the ratio of the two
According to Fourier analysis, any composite signal is a combination of sine waves with
How many factors data rate limit depends on
Consider the below figure. What are the bits transmitted for the Unipolar system?
If a periodic signal is decomposed into five sine waves with frequencies of 100, 300, 500, 700, and 900 Hz, what is its bandwidth?
Assume we need to download text documents at the rate of 100 pages per second. What is the required bit rate of the channel?
A digitized voice channel is made by digitizing a 4-kHz bandwidth analog voice signal. We need to sample the signal at twice the highest frequency (two samples per hertz). We assume that each sample requires 8 bits. What is the required bit rate?
What is the bit rate for high-definition TV (HDTV)?
A device is sending out data at the rate of 1000 bps. How long does it take to send a file of 100,000 characters?
A file contains 2 million bytes. How long does it take to download this file using a 56-Kbps channel?
We need to send 265 kbps over a noiseless channel with a bandwidth of 20 kHz. How many signal levels do we need?
Calculate the theoretical highest bit rate of a regular telephone line. The signal-to-noise ratio is usually 3162
Calculate the theoretical channel capacity. If SNR(dB) = 36 and the channel bandwidth is 2 MHz
A channel has a 1-MHz bandwidth. The SNR for this channel is 63. What is the appropriate bit rate?
A channel has a 1-MHz bandwidth. The SNR for this channel is 63. What is the appropriate signel level?
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