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1) A mobile base station (BS) in an urban environment has a power measurement of 35 µW at 180 m. Assuming the

propagation follows the inverse 4th power law (see Section 3.2.2), what is a reasonable power value in W, to assume at a distance of 540 m from the BS? Express your answer in scientific notation to 2 decimal places.

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2) An analogue signal has a bandwidth which extends from very low frequencies up to 12 kHz. Using the sampling theorem(Section 3.3.1), what is the minimum sampling rate (number of samples per second) required to convert this signal into a digital representation?

If each sample is now quantised into 512 levels, what will be the resulting transmitted bit-rate, expressing your answer in scientific notation to 2 decimal places?

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(1) 4.32 10 -7 W (2) 24,000... View the full answer

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