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(1) A binary PCM signaling uses on-off signaling to transmit symbols 1 and 0 (symbol 1 is represented by a rectangular pulse of amplitude A and duration Tb; symbol 0 is represented by no pulse transmission for period Tb). The additive noise at the receiver input is white and Gaussian with zero mean and PSD of N0/2. Find an expression for the average probability of error with matched filtering assuming symbol 1 and 0 occur with equal probability.
(2) An analog signal was sampled, quantized and encoded into a binary PCM wave. The sampling frequency was 10 kHz and the number of representation levels was 256. The PCM signal streamed over a baseband channel. How many digits are used to represent each sample? What is the bit rate? How long does it take to transmit one sample? What is the minimum required transmission bandwidth?
(3) The combination of the transmitter and channel produces a pulse with its amplitude spectrum defined by G(f)H(f) = e-|f|Tb. Determine the spectrum of the of the ideal receiver filter that would eliminate intersymbol interference. Assume ideal Nyquist channel.
(4) In a single parity-check code, a single parity bit is appended to a block of k message bits (m0, m1, mk-1). This single parity bit, b1, is chosen so that the codeword satisfies the even parity rule: m0 + m1 +.......+ mk-1 + b0 = 0 (mod 2). For k = 3, set up the 2k possible codewords in the code defined by this rule.
A reservoir-type small hydroelectric system has a penstock that is 2 m in diameter,The speed of water at exit end of the penstock is 10 m/s.assume that the power coefficient is 40%,the turbine efficiency is 80%
question 1the matlab file psa9p12.m should be used for this question.loads at peak timebus 2nbsp 100 mw 0 mvar bus 3
A 10 kW, 220 V, dc shunt motor has field and armature reistance of 110 ohms and .20 ohms, respectively. At no-load the motor runs at 1200 rpm and has an armature current of 5 A.
In a MOS cascode amplifier, the cascode transistor is required to raise the output resistance by a factor of 40. If the transistor is operated at Vov = 0.2 V, what must its Va be
a) What would be the value of the parity bits. b) If some of the bits get flipped in transmission and the following bits are received 1101 0101 0001 0010 1010 with the parity bits, can you detect the error. Can you correct it.
implement a 5x5 signed multiplier and determine the number of full and half adders needed for the multiplier. draw a
A mixer stage has a noise figure of 20 dB. This mixer stage is preceded by an amplifier which has a noise figure of 9 dB and an available power gain of 15 dB. what is The overall noise figure referred to the input.
design a silicon rectifier diode that will have a reverse breakdown voltage of 250v and conduct a forward current of
For a complex load of 100 + 25 j ohm. find the matching circuit consist of ideal capacitor and/or inductor to match the load to 50 ohm impedance at 500MHz. The solution should include circuit schematic and values of each component
The repulsive force one exerts on the other when they are 20cm apart is 1.35 X 10-4 N. after the balls are touched together and then represented once again to 20cm, now the repulsive force is found to be 1.40 X 10-4 N. find the charges q1 and q2.
pecify the value for R. What is the diode current with the load connected What is the increase resulting in the output votage when the load is disconnected What change results if the load resistance is reduced to 100ohms? To 75ohms To 50ohms
A lossless transmission line is embedded in a medium having a dielectric constant of 9. The per-unit length capacitance of the line is given as 100 pF/m. a.Find the wave velocity in the medium.
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