FM radio stations in some large city are allowed to use bandwidth strictly in th

Question

FM radio stations in some large city are allowed to use bandwidth strictly in the range 90 MHz to 93.5 MHz, i.e., no station is allowed to transmit any radio signals with frequencies less than 90 MHz or larger than 93.5 MHz.

Reminder: a bandwidth of 200 KHz is needed for each FM channel.

a) What is the maximum number of FM radio stations that can operate in this city?

b) FM radio station WHCR operates at an announced frequency of 90.3 MHz. What is the

smallest frequency and what is the largest frequency transmitted by this station?

c) If the bandwidth allocated to station WHCR is utilized to transmit data in a noiseless

channel, what would be the bit rate of this channel assuming a transmission scheme that uses

eight voltage levels?

Explanation / Answer

a)3.5 MHz/200 kHz=17.5

so max number=17

b)smallest=90.3 MHz-100 kHz=90.2 MHz

largest=90.3 MHz+100 kHz=90.4 MHz

c)1600 bits/sec

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