ELG 3175 Lecture Notes - Lecture 30: The Sequence, Asteroid Family
9 Apr 2018
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Document Summary
We need to find the total number of bits that will represent the picture. We know that 256 quantization levels require 8 bits to represent each quantization level. The modulation methods pam, pwm, and ppm discussed in the previous lecture still represent analog communication signals since the height, width, and position of the pam, Pwm, and ppm, respectively, can take any value in a range of values. Digital communication systems require the transmission of a digital for of the samples of the information signal. Therefore, a device that converts the analog samples of the message signal to digital form would be required. Analog to digital converters (adc) are such devices. Adcs sample the input signal and then apply a process called quantization. The quantized forms of the samples are then converted to binary digits and are outputted in the form of 1"s and 0"s.
