Virtual Labs

Which of the following is TRUE?

A: MIMO provides diversity and multiplexing while SIMO/MISO only provide diversity Explanation

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B: SIMO/MISO provide diversity and multiplexing while MIMO only provides diversity Explanation

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C: MIMO provides only multiplexing gain while SIMO/MISO provide only diversity gain Explanation

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D: All provide both multiplexing and diversity Explanation

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How is rank(H) related to the number of antennas at the transmitter and receiver?

A: Mt + Mr Explanation

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B: min(Mt, Mr) Explanation

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C: max(Mt, Mr) Explanation

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D: Mt Mt Explanation

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The matrices U and V in the SVD of the MIMO channel matrix are...

A: complex unitary Explanation

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B: complex Hermitian Explanation

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C: real Hermitian Explanation

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D: depends on the channel Explanation

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How many non-zero entries will the matrix S have in the SVD of H?

A: Mr Explanation

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B: Mt Explanation

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C: rank(H) Explanation

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D: Mr Mt Explanation

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Which of the following statements about spatial multiplexing is true?

A: It always improves reliability Explanation

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B: It only works with single antenna systems Explanation

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C: It increases capacity linearly with the number of antennas under ideal conditions Explanation

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D: It is independent of channel state information Explanation

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Which of the following are TRUE about the diversity-multiplexing tradeoff?

A: MIMO systems only provide multiplexing gain Explanation

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B: Trying to achieve diversity gain will lead to loss in multiplexing gain Explanation

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C: Diversity gain can be achieved without any loss in multiplexing gain Explanation

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D: Diversity gain will enhance multiplexing gain Explanation

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Which of the following is NOT a drawback of spatial multiplexing in MIMO?

A: It requires rich scattering environment Explanation

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B: It degrades performance in correlated channels Explanation

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C: It reduces data rate in high SNR Explanation

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D: It increases receiver complexity Explanation

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Spatial Multiplexing