Why there is imperfection in adaptive modulation and coding

Assignment Help Computer Engineering

Reference no: EM133428731

Questions:

1. Discuss why there is imperfection in adaptive modulation and coding.

2. In practical adaptive modulation and coding, the block error rate (BLER) (or packet error rate (PER)) should be carefully monitored as the final word on whether the data rate should be increased (if the BLER is low) or decreased to a more robust setting. Assume that the size of the block is 100 bits and the bit error rate (BER) is 10-3. Calculate the BLER.

3. Discuss the difference between Type 1 HARQ and Type 2 HARQ.

4. Discuss the impact of multi-packet reception at physical layer on the design of higher layers.

5. Compare the user plane protocol stack in GPRS with that in UMTS, and discuss and difference.

6. What are the strong aspects and weak aspects in the following paper?

Reference no: EM133428731

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