Q. Which modulation spectrum has narrow main lobe?

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Q. Which technique can be used for bandwidth reduction?

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Q. QPSK amplitude modulates

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Q. QAM is a combination of

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Q. Which refers to the presence of error correction coding scheme?

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Q. The system will be more bandwidth efficient as WTb decreases.

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Q. In MPSK, R/W

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Q. In MFSK, R/W

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Q. Which modulation is selected for power limited system?

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Q. The transmission rate is given as

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Q. Code’s redundancy is given as

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Q. For more than two quantization level, _______ is used.

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Q. How can the throughput of the system be increased?

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Q. In which technique spot beam antennas are used to point the radio signals in different directions?

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Q. In polarization division technique ______ polarization is used.

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Q. Channelization characterized by orthogonal spectra is called as

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Q. In double side band spectrum which side-band is called as inverted side-band?

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Q. The mixing and filtering of DSB removes

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Q. The super group is made up of

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Q. The orbital period of communication satellites is _______ as that of earth’s rotational period.

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