Q. The segment of the key-stream of plaintext is obtained by _____ of two sequences together.

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Q. In which method the key-stream is generated independently of the message?

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Q. In which method cipher feedback is used?

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Q. Spread spectrum multiple access techniques allows the multiple signal to be transmitted

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Q. In CDMA, the users share the bandwidth

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Q. Multi paths may be because of

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Q. For direct sequence systems what is the minimum required processing gain?

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Q. For hybrid systems the minimum required processing gain is

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Q. Frequency hopping system can provide reliable mitigation only if

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Q. Direct system allows detection of signals whose psd level is

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Q. Spread spectrum is a ______ technique.

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Q. Spread spectrum can be used to transmit

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Q. Spread spectrum makes ______ difficult.

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Q. Spread spectrum has immunity from

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Q. The width of each channel in frequency hopping spread spectrum corresponds to

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Q. The transmitter of frequency hopping system is fed with encoding scheme such as

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Q. Which filter is used to get the final FHSS signal?

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Q. In CDMA the incoming signal is _____ with the spreading code.

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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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