In a binary PCM system, symbols 0 and 1 have a priori In a binary PCM system, symbols 0 and 1 have a priori probabilities p0 and p1, respectively. The conditional probability density function of the random variable Y (with sample value y) obtained by sampling the matched filter output in the receiver of Figure […]
From the mathematical definition of the free-space loss we see From the mathematical definition of the free-space loss we see that it is dependent on the carrier wavelength A or frequency f. How can this dependence on wavelength or frequency be justified in physicalterms?
In a satellite communication system, the carrier frequency used In a satellite communication system, the carrier frequency used on the uplink is always higher than the carrier frequency used on the downlink. Justify the rationale for this choice.
Consider the sinusoidal process X (t) = A cos (2π f c t), w Consider the sinusoidal process X (t) = A cos (2p f c t), where the frequency f c is constant and the amplitude A is uniformly distributed. Determine whether or not this process is strictly stationary.
Consider the receiver of Figure which consists of a ios.sy Consider the receiver of Figure which consists of a ios.sy waveguide, low-noise RF amplifier, frequency down-converter mixer), and IF amplifier. The figure includes the noise figures and power gains of these four components. The antenna temperature is 50K. (a) Calculate the equivalent noise temperature for […]
Consider the two constellations shown in Figure. Determine the o Consider the two constellations shown in Figure. Determine the orthonormal matrix Q that transforms the constellation shown in Figure a into the one shown in Figure b.
TCO 4) Sales commissions and salesperson salaries may be classified as (Points 1. (TCO 4) Sales commissions and salesperson salaries may be classified as (Points : 4) A) selling expenses. B) advertising expenses. C) depreciation expenses. D) both a & b.
Consider two PN sequences of period N = 63. One Consider two PN sequences of period N = 63. One sequence has the feedback taps [6, 1] and the other sequence has the feedback taps [6, 5, 2, 1], which are picked in accordance with Table 7.1. (a) Compute the autocorrelation function of these two […]
Consider the transition probability diagram of a binary symmetri Consider the transition probability diagram of a binary symmetric channel shown in figure. The input binary symbols 0 and 1 occur with equal probability. Find the probabilities of the binary symbols 0 and 1 appearing at the channeloutput.
Consider the special case of a signal constellation that has Consider the special case of a signal constellation that has a symmetric geometry with respect to the origin. Assume that the M message points of the constellation, pertaining to symbols m1, m2 ⌠mm, are equally likely. Using the upper bound on the complementary error […]