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CSE 313 Data Communication

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Presentation on theme: "CSE 313 Data Communication"— Presentation transcript:

1 CSE 313 Data Communication
Lec 09 Sabbir Muhammad Saleh

2 Quiz and practice problems on SNR
0: A radio transmits with a bandwidth of 1800 Hz. It uses four signal levels. It is assumed that there are no other transmitters in the area thus there is no noise in the channel. What is the highest bit rate can we obtain in this scenario? PG:81 Data Communications and Networking By Behrouz A.Forouzan 5th Edition.

3 Quiz and practice problems on SNR
1: We need to send 1 Mbps over a channel with negligible noise, a bandwidth of 100 kHz. How many signal levels do we need? PG:81 Data Communications and Networking By Behrouz A.Forouzan 5th Edition.

4 Quiz and practice problems on SNR
2: A certain network uses a bandwidth of 2000 Hz for its communications. The signal-to-noise ratio is usually What is the channel the capacity for this network? PG:81 Data Communications and Networking By Behrouz A.Forouzan 5th Edition.

5 Quiz and practice problems on SNR
3: The signal-to-noise ratio is often given in decibels. Assume that SNRdB = 18 and the channel bandwidth is 2 MHz. What is the channel capacity? PG:81 Data Communications and Networking By Behrouz A.Forouzan 5th Edition.

6 Quiz and practice problems on SNR
4: We have a channel with a 1-MHz bandwidth. The SNR for this channel is 31. What are the appropriate bit rate and signal level? Assume we can achieve only 80% of the maximum theoretical bitrate with noise. PG:81 Data Communications and Networking By Behrouz A.Forouzan 5th Edition.

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