Engineering Viva Questions

Viva Questions on Mobile Radio Propagation  Short Answer type  Viva Questions on Mobile Radio Propagation  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 to model a radio channel in mobile radio system design. However, the model of a radio channel is achieved in a statistical manner which is based upon the measurement observed for the desired communication system or spectrum alloca...

 Evolution of Wireless and Cellular Communications Viva Questions Short Viva Question with  Answers on  Evolution of Wireless and Cellular Communications 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) ...