Chapter 2 Lab Manual for Wireless# Guide to Wireless Communications 2ed Review Questions 1. The number of transitions in a digital signal affects how efficiently it can be transmitted using an analog signal. Which of the digital signals in activities 1, 2, and 3 in Lab 2-3 above has the fewest transitions? 2. An analog signal after it is modulated with, for example, an audio signal is generally called a carrier wave. 3. What is the effect of applying a barker code (or chipping code) on a digital signal, before transmitting it using an analog signal? 4. How does narrow band interference affect a FHSS transmission? 5. Briefly describe how a narrow band signal interferes with a DSSS transmission