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- 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.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 43 Hz and an amplitude range of - 10 to 10 Vots. Determine the minimum bit rate fin bps) required in the PCM system? O a 688 O 774 O c 387 O d 86 Oe 2584. The information in an analog voltage waveform is to be transmitted over a PCM system with a F 0.2% accuracy (full scale). The analog waveform has a bandwidth of 200 Hz, and an amplitude range of -5 to +5 V. determine the following: - The minimum sampling rate needed. - The number of bits needed in each PCM word. - The minimum bit rate in the PCM signal. - The minimum channel bandwidth for transmission of this PCM signal.
- For midpoint biasing, ID would be: A. 10 mA. B. 7.5 mA. C. 5 mA. D. 2.5 mA.Q1: A BPCM system is used to transmit signal of 512 levels, the input signal works in the range between (30-70) MHz. Find the bit rate and signal to noise ration? Note that: the step size is considered to be double of system level. Communication systemMCQ) 5)Quantization error------: a. decreases as the bits per sample increases b. decreases as the bits per sample decreases c. decreases as the sample rate increases d. decreases as the sample rate decreases 6)The difference between the actual value of the sample and the quantized value of the sample is called: a. PAM error b. Sampling error c. Quantization error d. PCM error ThESE multiple choice question from DIGITAL COMMUNICATIONS course.just write for me the final answer.
- 1. A) An 8-bit ADC with a reference voltage of 5V is implemented using the Counter Ramp technique. Assume the input voltage is 1.4V. How many clocks are needed to conduct a conversion? You do not need consider the sampling time. B) A 10-bit ADC with a reference voltage of 5V is implemented using the SAR technique. Assume the input voltage is 3.2V. How many clocks are needed to conduct a conversion? You do not need consider the sampling time. C) An analog signal has a maximum frequency of 300HZ, what should be the minimum sampling rate of the ADC so that the digitized data can be used to perfectly reconstruct the original analog signal? D) For an 8-bit DAC, if Vref = 6 V, and the input code is 0×4B (01001011), what is the DAC output voltage? E) A 8-bit ADC has a reference voltage of 6V. What is the max quantization error?The information in an analog waveform, whose maximum frequency fm-4000Hz, 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?For a QPSK waveform, with the following input bit sequence 100010101101, an input rate equal to 20 Mbps: Draw the modulated waveform, state assumption used. Determine the minimum bandwidth required
- You are building an instrument and need to choose the ADC. The signal voltages range from –1 V to 1 V, and the instrument needs to measure voltage changes of 0.01 V in order for the instrument to measure the analyte of interest adequately. Would a 10-bit ADC be adequate? If so, support your response with a calculation. If not, suggest a bit number for an ADC that would be adequate.Q3: Assume that you have to spread two signals A and B, using CDMA with the DSSS. The data of signals are Ad = 111 and Bd = 000. The key sequences are Ak = 010100 100010 110011, and Bk = 000110 101000 010111 If the binary "0" is assigned a positive signal value (+1), the binary "1" a negative signal value (-1), for the As and Bs. Find the following: 1. The results of spreading signals As and Bs. 2. The summation signal of As + Bs. 3. Find the output data values of As and Bs.An analog signal with a bandwidth of 4.2 MHz is to be converted into binary PCM and transmit- ted over a channel. The peak-signal quantizing noise ratio at the receiver output must be at least 55 dB. (a) If we assume that P=0 and that there is no ISI, what will be the word length and the number of quantizing steps needed? (b) What will be the equivalent bit rate? (c) What will be the channel null bandwidth required if rectangular pulse shapes are used?