Propagation delay

1. List the three types of communications satellites, and give the characteristics of each.

2. What is propagation delay?

3. How many GEO satellites are needed to reach all populated areas on the earth?

4. If two signal levels are used, what is the data rate that can be sent over a coaxial cable that has an analog bandwidth of 6.2 MHz?

1. How do transmission errors affect data?

2. List and explain the three main sources of transmission errors.

3. What is a codeword, and how is it used in forward error correction?

4. In a burst error, how is burst length measured?


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