Question

# 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.

and my next question

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?

#### Top Answer

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