• Wireless and Cellular Communications

    Viva Questions on Cellular Concept

    Viva Questions on Cellular Concept Viva Questions on Cellular Concept, Cellular Concept Viva Questions, Engineering Viva Questions, Wireless Viva Questions, Cellular Communication Viva Questions Short Answer Type Questions With Answers Q.1. Define a cell. Ans. The smallest geographical area covered by wireless communication is said to be a cell. A base station is located in every cell. The shape of a cell is a hexagon. Q.2. What are the shapes related to a cell? Ans. In the early days, three shapes namely (a) Circle, (b) Square, (c) Hexagon was suggested for a cell. But coverage of signal was very accurate with hexagonal-shaped cells and in a later stage, it was…

  • Wireless and Cellular Communications

    Viva Questions on Mobile Radio Propagation

    Viva Questions on Mobile Radio Propagation  Viva Questions on Mobile Radio Propagation, Mobile Radio Question Answers, Engineering Viva Questions, Viva Questions with Answers, Short Answer type Viva Questions on Mobile Radio Propagation, Mobile Radio Propagation  Viva Questions Short Answer type Questions Q.1.What are the two basic types of communication channels? Ans.Basically, there are following two types of communication channels (i)                 wired channels (ii)               radio or wireless channels The wired channels are stationary and predictable whereas the radio channels are extremely random and do not offer easy analysis. Even the speed of motion affects how rapidly the signal level fades as a mobile terminal moves in space. Therefore, it has been most difficult…

  • Wireless and Cellular Communications

    Evolution of Wireless Communications Viva Questions

     Evolution of Wireless Communications Viva Questions Evolution of Wireless Communications Viva Questions, Cellular Viva Questions, Engineering Viva Questions, Viva Questions with Answers, Viva Questions on Evolution of Wireless Communications Short Viva Question with Answers Q.1.What are the reasons for developing a cellular mobile telephone system? Ans.There are so many reasons for developing a cellular mobile telephone system. Few main reasons may be listed as under:         i.            limitations of conventional mobile telephone systems       ii.            spectrum efficiency considerations     iii.            technology, feasibility, and service affordability Q.2.What are the limitations of conventional mobile telephone systems? Ans.There are the following three limitations of conventional mobile telephone systems: (i)                 limited service capability (ii)               poor…