Consider a modulator-demodulator hardware that uses amplitude modulation to encode and decode every cycle of a carrier wave of amplitude A. Draw the waveform diagram to show a modulated carrier wave that is used to transmit the bit sequence 01100111. Assume you are encoding using 4 different amplitude levels. Show clearly, the bit pair you are encoding for each of the 4 amplitude levels. Consider a modulator-demodulator hardware that uses frequency modulation to encode and decode a carrier wave for every two cycles. Draw the waveform diagram to show a modulated carrier wave that is used to transmit the bit sequence 0 1 -- 1 -- 0. The -- indicates the channel is idle. Assume one bit is transferred per frequency level. Clearly indicate the number of cycles you are using to send bit 1 and bit O.