Figure shows the idealized spectrum of a message signal m Figure shows the idealized spectrum of a message signal m (t). The signal is sampled at a rate equal to 1 kHz using flat-top pulses, with each pulse being of unit amplitude and duration 0.1 ms. Determine and sketch the spectrum of the resulting PAMsignal
Binary data are transmitted over a microwave link at the Binary data are transmitted over a microwave link at the rate of 106b/s, and the power spectral density of the noise at the receiver input is 10â10W/Hz. Find the average carrier power required to maintain an average probability of error Pc < 10â4=”” for=””> (a) […]
Figure shows the block diagram of a wideband frequency modulator Figure shows the block diagram of a wideband frequency modulator using the indirect method. This modulator is used to transmit audio signals containing frequencies in the range of 100 Hz to 15 kHz by a crystal-controlled oscillator. A second crystal-controlled oscillator supplies a sinusoidal wave […]
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.
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 […]