Q. The original bandwidth of the unspread signal in spread spectrum is ____ to data rate.

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Q. In DSSS the signal is recovered using

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Q. Multiple isolated peaks in multipath components is called as

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Q. If delay time is greater than symbol time, _______ fading occurs.

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Q. If delay time is lesser than symbol time, ______ fading occurs.

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Q. When channel coherence bandwidth is greater than the transmitted signal bandwidth ______ occurs.

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Q. Channel’s time spreading properties are

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Q. When channel coherence time is less than the time duration of a transmission symbol, then ______ fading occurs.

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Q. Minimum time required for magnitude change or phase change is called as

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Q. When a user’s moving, the user’s velocity causes shift in frequency. This is called as

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Q. Coherence time is _______ to Doppler spread.

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Q. Block fading occurs in

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Q. If coherence bandwidth is smaller than the bandwidth of the signal, _____ fading occurs.

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Q. Flat fading can be avoided or stopped by

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Q. The effect of Doppler shift can be counterattacked by

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Q. When transmitter and receiver moves towards each other, the magnitude of frequency shift is

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Q. If signalling rate is less than fading rate, _____ fading occurs.

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Q. Frequency tracking loop can minimize irreducible error rate by using

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Q. The technique for combining diversity signals are

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Q. Diversity technique is used for combating

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