Q. Assume we need to download text documents at the rate of 100 pages per second. What is the required bit rate of the channel?

View solution

Q. 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?

View solution

Q. What is the bit rate for high-definition TV (HDTV)?

View solution

Q. 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?

View solution

Q. A file contains 2 million bytes. How long does it take to download this file using a 56-Kbps channel?

View solution

Q. We need to send 265 kbps over a noiseless channel with a bandwidth of 20 kHz. How many signal levels do we need?

View solution

Q. Calculate the theoretical highest bit rate of a regular telephone line. The signal-to-noise ratio is usually 3162.

View solution

Q. Calculate the theoretical channel capacity. If SNR(dB) = 36 and the channel bandwidth is 2 MHz.

View solution

Q. A channel has a 1-MHz bandwidth. The SNR for this channel is 63. What is the appropriate bit rate?

View solution

Q. A channel has a 1-MHz bandwidth. The SNR for this channel is 63. What is the appropriate signel level?

View solution