Incoming binary information is encoded by a typical modem into QPSK and 16- PSK scheme. Modem operates at data rate of 2400 bps. Amplitude of the encoded signal is 10mV peak. Noise power at receiver is 100 nW. Calculate Eb/N0 in dBm.
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Incoming binary information is encoded by a typical modem into QPSK and 16- PSK scheme. Modem operates at data rate of 2400 bps. Amplitude of the encoded signal is 10mV peak. Noise power at receiver is 100 nW. Calculate Eb/N0 in dBm.
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- 1. With the help of Octave program perform the Modulation and Demodulation (AM) of information signal with carrier signal, through subplots with following signals a. Modulating signal b. Modulated signal c. Demodulated signalFor a FM system, the maximum freq deviation is 75 kHz and the maximum freq of the info. signal is 10 kHz. What will be the total bandwidth of the FM system? What will be the modulation index?Problem 2)- The figure below shows the binary input data and carrier signal that used in a optical comm system. Determine the data rate and baud rate for the following modulation schemes: a) Binary Phase Shift Keying b) Binary Frequency shift Keying. Assume the carrier swing is 3MHz. Input data Carrier 9 1 ' Sus Sus
- 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 258For the DBPSK modulator shown in Figure 40a (page 93), determine th output phase sequence for the following input bit sequence: 00110011010101 (assume that the reference bit 1). * 0°180°0°0°0°180°0°0°0°180°180°o°0°180°180°0°180° 10111011100110010 180°0°0°0180°0°0°0180°180°180°0°0180°180°0°0° 01110111000110011For the DBPSK modulator shown in Figure 40a (page 93), determine the output phase sequence for the following input bit sequence: 00110011010101 (assume that the reference bit 1). * 0°180°0°0°0°180°0°0°0°180°180°0°0°180°180°0°180° 10111011100110010 180°0°0°0180°0°0°0180°180°180°0°0180°180°0°0° 01110111000110011
- [0 5] the signal in the volt range will be quantified. since n=4; a)Calculate what is the number of Qunta levels? b) Calculate what is the quantization interval? c)V=3.2 volts rounded to what quantization level? Let's draw with Quantalama level chartAn a differential pulse code modulated system, the transmitted bits per sample is 7. How many levels are present in the quantizer?The task of the modulator is: O a. Amplification of the analogue signal before transmission. O b. Converting digital symbols into analogue waveforms. O c. Decompresses the encoded digital signal. O d. Detects and possibly corrects error in the received digital data. O e. Detection of received digital symbols. O f. Introduces redundancy in the digital data to protect against error. g. Compresses the digital signal. O h. Amplification of the received signal with minimal noise.
- Choose the correct answer low HDOP (Horizontal Dilution of Precision) number such as2 indicates a ........................... a.poor fix b.good fix c.poor signal quality d. good signal qualitywhat happens when the modulation order is increased for a modulated signal?Exampic Bandwidth of the input to pulse code modulator is restricted to 4 kHz. The input varies from -3.8V to 3.8 V and has the average power of 30 mW, the required signal to quantization noise power ratio is 20 dB. The modulator produces binary output. Assume uniform quantization Calculate the number of bits required per sample.