Reference no: EM133220502

Given 3(three) digital signals named ds1,ds2,ds3 . All three digital signals have 2 (two) elements in each signal element. Bit rate of these digital signals are 1000bps, 2200bps, 5600bps respectively. These three signals need to be transmitted together over a communication link of 10 MHz bandwidth ranging from 5 MHz to 15 Mhz using FDM. To do that first you have to convert the digital signals using FSK . For FSK use d =1 , and 2 kHz guard bands. Assume the modulated signals (ms1,ms2,ms3) using FDM and transmit it through the given communication link. for FDM, use 26 kHz guard bands.

1. What will be the appropiate central (or nominal) carrier frequencies to convert ds1,ds2,ds3 into ms1,ms2,ms3 using FSK?

2. What are the carrier frequencies to convert ds3 into ms3 using FSK?

3. What are the bandwidths of ms1,ms2,ms3 after FSK? (take guard bands into consideration)

4. What is the required minimum bandwitdh to transmit ms1,ms2,ms3 together over the given communication link using FDM? (take guard band into consideration)

5. IN receiver side, how can you seperate ms1,ms3,ms3 from the received composite signal? Explain.