EEE4455 Communications and Network Engineering (22/23) Assignment 1 Notes: Print the assignment template on A4 paper. Your answer must be HANDWRITTEN using a black ball pen on both sides of the paper. Show the steps of calculation. !! MAKE A COPY OF YOUR ASSIGNMENT BEFORE SUBMISSION !! Don't copy from others, or all of you will get 0 marks. Each question carries 10 marks. 1. 2. 3. Late submission would lead to mark deduction. A B Amplifier Fig. 1 a. b. a. b. The attenuation from point A to point B is -18 dB, and the amplifier's power gain is 30. Assume there is no noise, what is the power level of a signal at point A if its power level at point C is 2 W? The attenuation from point A to point B is -18 dB, and the amplifier's voltage gain is 30. Assume there is no noise, what is the voltage level of a signal at point A if its voltage level at point C is 2 V? What is the channel capacity of a 10-MHz channel with an SNR of 25 dB? If the channel is used to transmit a 50-Mbps video stream, what is the minimum number of levels per symbol? Complete the encoded waveforms below. NRZ-L Manchester | 0 | 1 1 110 EEE4455 Communications and Network Engineering (22/23) 4. Synchronous TDM is used to combine 20 digital sources of 256 kbps. Each output frame carries 32 bits from each source, and 8 extra bits are added for synchronization. a. What is the size of an output frame in bits? b. What is the output frame rate? c. d. What is the duration of an output frame? What is the output data rate? 5. Determine the codeword if the generator polynomial is x + x + 1 and the dataword is 100111012. ***** End *****