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Question :
a) Describe the following modes of wave propagation:
- Line of sight - Ground waves - Skywaves
b) Why can waves with a very low frequency be used for submarine communication? Give one reason why are they not used for data transmission in mobile phones and computer networks.
c) A Line-of-sight (LOS) is usually required between a sender and receiver for radio waves with frequency > 30 MHz, nevertheless, mobile phones can work in big cities without such LOS. Explain.
d) Spread spectrum is a technique which generates signals which are strong and loud, that is resistant to interference. Explain how this is achieved.
e) Briefly explain how directional and omni-direction antennas work. Is a directional antenna suitable for mobile phone communication?
Decision Tree Learning: Furthermore there is specified in the last lecture such as the representation scheme we choose to represent our learned solutions and the way that we l
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Procedure Level Here, parallelism is accessible in the form of parallel executable procedures. In this situation, the design of the algorithm plays a main role. For example eac
#questi on.. How it works explain
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