Q. Spread spectrum has immunity from

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

Q. In DSSS the signal is recovered using

View solution

Q. Multiple isolated peaks in multipath components is called as

View solution

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

View solution

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

View solution

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

View solution

Q. Channel’s time spreading properties are

View solution

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

View solution

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

View solution

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

View solution

Q. Coherence time is _______ to Doppler spread.

View solution

Q. Block fading occurs in

View solution

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

View solution

Q. Flat fading can be avoided or stopped by

View solution

Q. The effect of Doppler shift can be counterattacked by

View solution