QUESTION 39 MIMO (multiple in, multiple out) antenna systems use multipath propagation modes to enhance signal strength and capacity True False QUESTION 40 Select the correct statement regarding antenna and electromagnetic (EM) wave polarization a The electric (E) wave dictates the polarization of the EM wave b The magnetic (M) wave dictates the polarization of the EM wave c Only antennas that are vertically polarized can collect horizontally polarized EM wave d Circular polarization can only be created using a spinning transmit antenna QUESTION 41 Which multiple access scheme requires the use of pseudorandom noise (PN) codes a Frequency Division Multiple Access (FDMA) b Time Division Multiple Access (TDMA) c Code Division Multiple Access (CDMA) d Orthogonal Frequency Division Multiple Access (OFDMA) QUESTION 42 While OFDMA is not a spread spectrum technology, it has similar characteristics in the frequency domain such as signal survivability in noisy RF environments True False

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Question: QUESTION 39 MIMO (multiple in, multiple out) antenna systems use multipath propagation modes to enhance signal strength and capacity. True False QUESTION 40 Select the

QUESTION 39

MIMO (multiple in, multiple out) antenna systems use multipath propagation modes to enhance signal strength and capacity.

True

False

QUESTION 40

Select the correct statement regarding antenna and electromagnetic (EM) wave polarization.

		a. The electric (E) wave dictates the polarization of the EM wave
		b. The magnetic (M) wave dictates the polarization of the EM wave
		c. Only antennas that are vertically polarized can collect horizontally polarized EM wave
		d. Circular polarization can only be created using a spinning transmit antenna

QUESTION 41

Which multiple access scheme requires the use of pseudorandom noise (PN) codes?

		a. Frequency Division Multiple Access (FDMA)
		b. Time Division Multiple Access (TDMA)
		c. Code Division Multiple Access (CDMA)
		d. Orthogonal Frequency Division Multiple Access (OFDMA)

QUESTION 42

While OFDMA is not a spread spectrum technology, it has similar characteristics in the frequency domain such as signal survivability in noisy RF environments.

True

False

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