1. Briefly explain the following concepts                                                                       (4 Marks)
    1. Baseband signal
    2. Bandpass signal
  2. Outline four applications of a communication satellite (4marks)
  3. Briefly explain the principle operation of the following channels
    1. Fibre optic                         (5marks)
    2. Communication satellite (5marks)
  4. Differentiate between Frequency division multiplexing and time division multiplexing


  1. Outline the uses of code division multiplexing             (3marks)


QUESTION TWO ( 20 marks)

  1. Outline six spread spectrum characteristics of CDMA (6marks)
  2. Fiber optics have revolutionized the telecommunications industry. Outline the steps involved in the process of communicating using fiber optic. (8marks)
  3. Describe the structure of the mobile cellular network. (12 marks)



 Briefly explain the function of a cellular network                                              (5marks)

  1. List down the three types of phones (3marks)
  2. Discuss the concept of cell signal encoding distinguishing between TDMA, FDMA, CDMA and OFDMA                                                                                                     (12 marks)

 QUESTION FOUR (20 marks)

  1. Briefly describe the three types of communication satellites                  (6marks)
  2. Communication satellites are composed of a number of subsystems. Describe the structure of a communication satellite             (10mks)
  3. Outline four characteristics of broadband signals             (4marks)


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