Question

Draw the waveforms for 4-ary PAM. Suppose that a bit sequence with a bit rate of 1 Kbps is modulated by using 4-ary PAM. The transmit power is 5 Watt. Plot the transmitted signal for the bit sequence "11010010".

Answer 1

4-ary PAM is a 4-level pulse amplitude modulation scheme where each symbol represents 2 bits. The waveform for each symbol is a rectangular pulse with a specific amplitude level.

Step-by-step explanation:

4-ary PAM stands for 4-level pulse amplitude modulation. In this modulation scheme, each symbol represents 2 bits, allowing for a total of 4 levels of amplitude. The waveform for each level can be represented by a rectangular pulse.

In this case, the bit sequence "11010010" would be split into pairs (11, 01, 00, 10). Each pair corresponds to a different level of amplitude. The waveform for each pair would be a rectangular pulse with the corresponding amplitude level.