Question: please explain #10 8. Show an 4 QAM encoding; what is the value of data bit at 225 degrees. (10 pt.) 9. Draw analog signal

please explain #10 8. Show an 4 QAM encoding; what is

please explain #10

8. Show an 4 QAM encoding; what is the value of data bit at 225 degrees. (10 pt.) 9. Draw analog signal corresponding using NRZ.(10 pt.) UG ndingto Y-5 Sine (2xt-45% )ands how how to Encode it to a digital signal Digifal 10. Find the numbef &t the following devices that could be accommodated by a Tl-type TDM line assume no % of the T1 line capacity is reserved for synchronization purposes.(20pt.) UG 24x7 a. 110- bps teleprinter terminals: b. 300- bps computer terminals: c. 1200- bps computer terminals: d. 9600- bps computer output ports: 182 brs e. 64-kbps PCM voice- frequency lines: 12iho bs 92Y bps 11. Show polarity and output signal (NRZ) for the following sequence using B8ZS encoding. 00110110000000000101. (10 pt.) (Grad only, Bonus for under grad) 12. The information in four analog signals is to be multiplexed and transmitted over a telephone channel that has a 400 to 3100 Hz bandpass. Each of the analog baseband signals is bandlimited to 500 Hz. Design a communication system (block diagram) that will allow the transmission of these four sources over the telephone channel using. (20 pt.) (Grad only, Bonus for under grad) a. Frequency division multiplexing b. Time division multiplexing using PCM; assume 4- bit samples Show the block diagrams of the complete system, including the transmission, channel, and reception portions. Include the bandwidths of the signals at the various points in the systems

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