Chapter 7 Homework - CNT 3004 Chapter 6 Homework 1....

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CNT 3004 – Chapter 6 Homework 1. Synchronous Time Division multiplexing is commonly used for multiplexing digitized voice streams and data streams. 2. Efficiency can be achieved by using multiplexing; privacy and antijamming can be achieved by using spreading. 3. Which multiplexing technique transmits digital signals? TDM 4. Spread Spectrum is designed to be used in wireless applications in which stations must be able to share the medium without interception by an eavesdropper and without being subject to jamming from a malicious intruder. 5. In synchronous TDM, each input connection has an allotment in the output even if it is not sending data. 6. In a multiplexed system, n lines share the bandwidth of 1 link. 7. In synchronous TDM, for n signal sources of the same data rate, each frame contains n slots. 8. The demultiplexer accepts the multiplexed data stream, separates the data according to channel, and delivers data to the appropriate output lines. 9. The frequency division multiplexing is the most heavily used. A familiar example is broadcast and cable television. 10. The FHSS technique uses M different carrier frequencies that are modulated by the source signal. At one moment, the sign modulates one carrier frequency; at the next moment, the signal modulates another carrier frequency. 11. The DSSS technique expands the bandwidth of a signal by replacing each data bit with n bits. 12. The transmitted data in synchronous TDM are organized into
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Chapter 7 Homework - CNT 3004 Chapter 6 Homework 1....

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