4) Illustrate the generation of noncoherent version of PSK signal for the input binary sequence 101101 by assuming '0' as the reference bit and explain the transmitter block diagram.
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Solved in 3 steps with 4 images
- Q4: Show how to PSK modulate and demodulate the data sequence (01101). Assign two full cycles of carrier signal for every data bit. Explain the steps in details and plots.H.w do H.W: Compute the binary code word values for the amplitudes 0.4 V and 0.78 V, then compute the quantization error for each. Suppose you have a 2bit ADC (PCM) modulator with 0 to 1 volt amplitude signal as shown below: 1 V OUANTI7ATION LEVELS.a) Multiply the binary numbers 01001111 (multiplicand) and 00000101 (multiplier) by using the directaddition method. b) in image c)in image
- The information in an analog waveform, whose maximum frequency fm-D4000HZ, is to be transmitted using a 16-level PAM system. The quantization must not exceed +1% of the peak-to peak analog signal. (a) What is the minimum number of bits per sample or bits per PCM word that should be used in this system? (b) What is the minimum required sampling rate, and what is the resulting bit rate? (c) What is the 16-ary PAM symbol Transmission rate?Q2/ The information in an analog signal voltage waveform is to be transmitted over a PCM system with an accuracy of ±0.1% (full scale). The analog voltage waveform has a bandwidth of 100 Hz and an amplitude range of -10 to +10 volts. Find the minimum sampling rate required. i) ii) Find minimum bit rate required in the PCM signal. Find the number of bits in each PCM word. iii) iv) Find the minimum absolute channel bandwidth required for the transmission of the PCM signal.Problem 2: The information in an analog signal voltage waveform is to be transmitted over a PCM system with an accuracy of ± 0.1 % of the peak-to-peak analog signal. The analog voltage waveform has a bandwidth of 100 Hz and an amplitude range of – 10 to + 10 Volts. Determine the minimum sampling rate required. b. Determine the number of bits in each PCM word. c. Determine the minimum bit rate required in the PCM system. d. Determine the minimum absolute channel bandwidth required for the transmission of the PCM signal.
- 4. What parameter of a PPM signal varies in direct proportion to the message signal amplitude? a. the average frequency of the PPM pulses b. the distance between the PPM pulses c. the amplitude of the PPM pulses d. the width of the PPM pulses 5. What is the function of the prefilter in a PTM modulation circuit? completely removes frequencies greater than 8 kHz a. completely removes the PTM signal's first replica b. frequencies c. filters the message signal d. partially reconstructs and amplifies the message signal 6. What advantage does a PPM signal have over a PWM signal? a. can be used for message signals greater than 5 kHz b. requires lower sampling frequency c. easier to demodulate d. requires less transmission power 7. Why does PTM require a higher sampling frequency than PAM? a. The amplitude of PTM signals is constant. b. There are more sidebands in the first replica of a PTM c. Signal than in a PAM signal. d. A sample/hold circuit requires a higher sampling frequency. e. There…Q4. Consider the QPSK digital modulation scheme (a) What does the abbreviation QPSK stand for? (b) Sketch an I-Q constellation diagram for this modulation scheme. (c) State the number of bits per symbol. (d) If the bit rate that is achieved with this modulation scheme is 128 Mbit s-, what is the baud (symbol) rate?Consider error control methods in digital signal transmission. Assume Hamming code is used with even parity. (a) Assume the received code word is 1110101001, determine if the code word is correct. If no, identify the wrong bit and obtain the original data word. (b) If the analogue signal before digitalisation is of frequency from 200 Hz to 1.5k Hz. What is the lowest sampling frequency? (c) Following (a) (b), determine the bandwidth requirement for transmitting the digital message.
- Consider the baseband signaling of the textual message 'OK' (excluding the quotes) in a wired DCS using binary line codes. Assume to bit duration is 1 ms. (a) Covert the message "OK" into a bit stream based on the 6-bit ASCII standard. (b) Describe mathematically and plot the non-return to zero code. evel (NRZ-L) line Stu (c) Describe mathematically and plot the bi-o-L (Manchester) line code. (d) escribe mathematically and plot the bipolar level line code.(a) Draw a QPSK waveform for 11010010 (b) Draw a Multilevel FSK (M = 4) for the same bitstream as in (a).7. Given the following ASK signal (Note: vertical lines denote bit divisions): (single bit)) (Lower Voltage '0', Higher Voltage '1') (MSB on the left) A E a. m 1 t U d 10 M e -5 -10+ a) What is the resulting bit stream? b) What is the bit rate? c) What ASCII character was transmitted Time(ns) 160