5- If a mobile traveling at 30 km/hr receives a signal through the channel, determine the time over which the channel appears stationary (or at least highly correlated).

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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Question.(5)

Pit
0 dBT
-10 dB+
-20 dB+
-30 dB+
indoor
50 75
0 dB
-10 dB
-20 dB
-30 dB
100 excess
delay (na)
P(x)
0
5 10
(b)
outdoor
(us)
2-For the power delay profiles in the Figure above, estimate the 90% correlation and the 50%
correlation coherence bandwidths.
3- How large can the rms delay spread be, for a binary modulated signal BPSK with a bit rate of 25 kbps
to operate without an equalizer? What about an 8-PSK system with a bit rate of 75 kbps?
4- If the channel is to be used with a modulation that requires an equalizer whenever the symbol
duration T, is less than 100. Determine the maxim urban RF symbol rate that can be supported
without requiring an equalizer.
5- If a mobile traveling at 30 km/hr receives a signal through the channel, determine the time over
which the channel appears stationary (or at least highly correlated).
Transcribed Image Text:Pit 0 dBT -10 dB+ -20 dB+ -30 dB+ indoor 50 75 0 dB -10 dB -20 dB -30 dB 100 excess delay (na) P(x) 0 5 10 (b) outdoor (us) 2-For the power delay profiles in the Figure above, estimate the 90% correlation and the 50% correlation coherence bandwidths. 3- How large can the rms delay spread be, for a binary modulated signal BPSK with a bit rate of 25 kbps to operate without an equalizer? What about an 8-PSK system with a bit rate of 75 kbps? 4- If the channel is to be used with a modulation that requires an equalizer whenever the symbol duration T, is less than 100. Determine the maxim urban RF symbol rate that can be supported without requiring an equalizer. 5- If a mobile traveling at 30 km/hr receives a signal through the channel, determine the time over which the channel appears stationary (or at least highly correlated).
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