Computer Networks: A Systems Approach 5e - Exercises (1.27)

Решение в MathCAD
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For the following, as in the previous problem, assume that no data compression is done. Calculate the bandwidth necessary for transmitting in real time:
(a) High-definition video at a resolution of 1920×1080, 24 bits/pixel, 30 frames/second.
(b) POTS (plain old telephone service) voice audio of 8-bit samples at 8 KHz.
(c) GSM mobile voice audio of 260-bit samples at 50 Hz.
(d) HDCD high-definition audio of 24-bit samples at 88.2 kHz.

Computer Networks: A Systems Approach 5e - Exercises (1.26)

Решение в MathCAD

For the following, assume that no data compression is done, although in practice this would almost never be the case. For (a) to (c), calculate the bandwidth necessary for transmitting in real time:
(a) Video at a resolution of 640×480, 3 bytes/pixel, 30 frames/second.
(b) Video at a resolution of 160×120, 1 byte/pixel, 5 frames/second.
(c) CD-ROM music, assuming one CD holds 75 minutes’ worth and takes 650 MB.
(d) Assume a fax transmits an 8×10-inch black-and-white image at a resolution of 72 pixels per inch. How long would this take over a 14.4-kbps modem?