A direct sequence spread binary phase-shift keying system uses a A direct sequence spread binary phase-shift keying system uses a feedback shift register of length 19 for the generation of the PN sequence. Calculate the processing gain of the system.
14. Tolla Company is estimating the following sales for the first six months of nex 14. Tolla Company is estimating the following sales for the first six months of next year: January $350,000 February $300,000 March $320,000 April $410,000 May $450,000 June $470,000 Sales at Tolla are normally collected as 70 percent in the month […]
Let X1, X2, . . , Xn denote the elements of a Gaussian vector Let X1, X2, . . , Xn denote the elements of a Gaussian vector X. The Z are independent with mean Âľi and variance s2i, i = 1, 2,. . . , n. Show that the differential entropy of the vector […]
Let X and Y are statistically independent Gaussian-distributed Let X and Y are statistically independent Gaussian-distributed random variables, each with zero mean and unit variance. Define the Gaussian process Z (t) = Z cos (2pt) + Y sin (2pt) (a) Determine the joint probability density function of the random variables Z (t1) and Z (i2) […]
Just as in an ordinary QPSK modulator, the output of a Just as in an ordinary QPSK modulator, the output of a p/4-shifted DQPSK modulator may be expressed in terms of its inâphase and quadrature components as follows; s(t) = s1(t) cos(2pfct) â sQ(t) sin (2pfct) formulate the in-phase component s1(t) and quadrature component sQ(t) […]
Let X (t) is zero-mean, stationary, Guassian process with Let X (t) is zero-mean, stationary, Guassian process with autocorrelation function RX (t). This process is applied to a square-law device, which is obtained by the input-output relation Y (t) = X2 (t), where Y (t) is the output (a) Show that the mean of y […]
16. A premium on common stock: (a) Is the amount paid in excess of par by purchaser 16. A premium on common stock: (a) Is the amount paid in excess of par by purchasers of newly issued stock (b) Is the difference between par value and issue price when the amount paid is below par […]
Let rc(1) = p/q1 and rc(2) = p/q2 be the Let rc(1) = p/q1 and rc(2) = p/q2 be the code rates of RSC encoders 1 and 2 in the turbo encoder of Figure. Find the code rate of the turbo code.
16. Williams Company’s direct labor cost is 30 percent of its conversion cos 16. Williams Companys direct labor cost is 30 percent of its conversion cost. If the manufacturing overhead for the last period was $59,500 and the direct materials cost was $37,000, what is the direct labor cost?
Let R denote the random variable obtained by observing the Let R denote the random variable obtained by observing the output of an envelope detector at some fixed time. Intuitively, the envelope detector is expected to be operating well into the threshold region if the probability that the random variable R exceeds the carrier amplitude […]