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Figure shows the circuit diagram of an envelope detector. It Figure shows the circuit diagram of an envelope detector. It consists simply of a diode and resistor-capacitor (RC) filter. On a positive half-cycle of the input signal, the diode is forward-biased and the capacitor C charges up rapidly to the peak value of the input […]

11. When a bond sells at a premium: (a) The contract rate is above the market rate 11. When a bond sells at a premium: (a) The contract rate is above the market rate (b) The contract rate is equal to the market rate (c) The contract rate is below the market rate (d) It […]

Figure shows the block diagram of a real-time spectrum analyzer Figure shows the block diagram of a real-time spectrum analyzer working on the principle of frequency modulation. The given signal g (t) and a frequency-modulated signal s (t) are applied to a multiplier and the output g (t) s (t) is fed into a filter […]

Calculate the improvement in processing gain of a DPCM system Calculate the improvement in processing gain of a DPCM system using the optimized three-rap linear predictor of Problem 3.32 over that of the optimized two-tap linear predictor of Problem 3.33. For this calculation, use the autocorrelation function values of the input signal specified in Problem […]

Figure shows the block Orthogonal frequency-division multiplexing may be viewed as a generalization of Mary FSK. Validate the rationale of this statement. Is this the question you were looking for? If so, place your order here to get started!

1, present value is 100, future value is 123.41, time period is 4 yrs; what is annu 1, present value is 100, future value is 123.41, time period is 4 yrs; what is annual interest rate _____% 2. present value is 200, future value is 285.79, time period is 5 years; what is annual interest […]

1. By installing some elaborate inspection equipment on its assembly line, the Robo 1. By installing some elaborate inspection equipment on its assembly line, the Robot Corp. can avoid hiring an extra worker who would have earned $26,000 a year in wages and an additional $7500 a year in employee benefits. The inspection equipment has […]

Assume that the narrowband noise n (t) is Guassian and Assume that the narrowband noise n (t) is Guassian and its power spectral density SN (A?) is symmetric about the mid band frequency A?c. Show that the in-phase and quadrature components of n (t) are statistically independent. Is this the question you were looking for? […]

Consider a square-law detector; using a nonlinear device whose t Consider a square-law detector; using a nonlinear device whose transfer characteristics is defined by v2 (t) = a1v1 (t) + a2v21 (t), where a1 and a2 are constant, v1 (t) is the input, and v2 (t) is the output. The input consists of the AM […]

By using the pre-emphasis filter shown in Figure a and By using the pre-emphasis filter shown in Figure a and with a voice signal as the modulating wave, and FM transmitter produces a signal that is essentially frequency modulated by the lower audio frequencies and phase-modulated by the higher audio frequencies. Explain the reasons for […]