the minimum sampling rate (according to Nyquist frequency) for the signal [ x(t) =2 ? cos 6000 Ttt + 5 cos 10000 Ttt ] is 5000HZ 10000HZ 12000HZ 20000HZ
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- Q1 If a signal has a frequency of 30KHZ what is the period in Microseconds?Asignal of maximum frequency of 20 kHz is sampled at Nyquist rate. The time interval between two successive sample is; a.5 µs b.50 µs c.10 µs d.1000 µs2.Consider the bit stream 01101101. Draw the waveforms for following line codes.(i)(ii)Biphase Manchester codingBiphase Differential Manchester codingPolar PSEUDOTERNARY(iii)(iv)Multilevel -8B6T(v)Multilevel-2B1Q Assume that the signal level for the most recent preceding 0 bit (pseudoternary) has a negative voltage.
- For binary discrete source, x has two symbols x1 and x2. Prove mathematically that H(x) is maximum when p(x1) = p(x2) and max H(x) = 1 bit/symbol.The basic principle of differential coding techniques like Differentil PCM (DPCM) and Adaptive Differential PCM (ADPCM) is to transmit information _____. A. about the changes in sample value B. approximation to the input signal C. using artificial signal D. of the actual sample values themselvesThe Nyquist theorem specifies the minimum sampling rate to be twice the highest frequency of a signal explain?
- a) Draw the graph of the NRZ-I, Manchester & differential Manchester using data stream01010101, assuming that the last signal level has been positiveCompute the propagation delay in this case.17. An analog signal carries 4 bits in each signal unit. If 1000 signal units are sent per second, then baud rate and bit rate of the signal are ________ and ____________ a. 4000 bauds \ sec & 1000 bps b. 2000 bauds \ sec & 1000 bps c. 1000 bauds \ sec & 500 bps d. 1000 bauds \ sec & 4000 bps
- If the frequency spectrum of a signal has a bandwidth of 500 Hz with the highest frequency at 600 Hz, what should be the sampling rate, according to the Nyquist theorem?Consider a convolutional code with k = 1, n = 3 and L = 3. The encoder generators aregiven by 91 = [110], 92 = [001] and 93 = [011].Assume the Viterbi algorithm is used for decoding at the receiver and considerthe received bit sequence at the input of the channel decoder being [10 0100110011].Answer the following questions.(a) What is the decoded information bit sequence? (b) What is the value of the cumulative metric (i.e., Hamming distance) of thefinal survivor path of the decoding process?(c) Draw the final survivor path of the trellis for the decoding process.Instruction for Part (c): An example of drawing a path in the trellis is shown below.If a digitizied signal has the data rate as 32 Kbps, which one is true? a. Sampling Period: 3 msec Bit per sample: 4 b. Sampling Period: 25.10-3 sec Bit per sample: 8 c. Sampling Period: 5.10-4sec Bit per sample: 8 d. Sampling Period: 3.10-4sec Bit per sample: 5 e Sampling Period: 3 msec Bit per sample: 5