1. a) Give three characteristics of a good communication system, along with one trade-off (compromise) that...
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1. a) Give three characteristics of a good communication system, along with one trade-off (compromise) that may be necessary in the design of a communication system. 5 b) Explain how the problem of aliasing arises in communication systems, and how anti-aliasing filters can be used to prevent this. Discuss whether such a filter should come before or after the sampling process. 5 c) Discuss whether the quantisation process can ever be considered reversible, and the implications this has for the communication of analogue information over a digital communications system. 5 d) Distinguish between baseband and bandpass signals, commenting also on the difference between baseband and bandpass communications. 5 e) Explain the meaning of modulation, giving two compelling reasons why it is necessary. 5 1. a) Give three characteristics of a good communication system, along with one trade-off (compromise) that may be necessary in the design of a communication system. 5 b) Explain how the problem of aliasing arises in communication systems, and how anti-aliasing filters can be used to prevent this. Discuss whether such a filter should come before or after the sampling process. 5 c) Discuss whether the quantisation process can ever be considered reversible, and the implications this has for the communication of analogue information over a digital communications system. 5 d) Distinguish between baseband and bandpass signals, commenting also on the difference between baseband and bandpass communications. 5 e) Explain the meaning of modulation, giving two compelling reasons why it is necessary. 5
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1 a Three characteristics of a good communication system include Reliability A good communication system should be able to deliver messages accurately and consistently even in challenging conditions E... View the full answer
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