Examiner and Academic Supervisor

In the modern wireless communication industry, radio communication equipment vendors not only produce communication hardware, but also produce software. In fact, software revenue is now a large part of the total revenue. As technology has developed and traffic demands increase, more and more functions required to implement the radio system are implemented via software rather than hardware. Today, many hardware functions are actually implemented with reconfigurable and programmable hardware. Therefore, it is often possible to perform an upgrade by loading new software (a software upgrade) rather than needing to change the physical hardware with every technology advance. However, introducing new elements and features in existing (often mature) software may cause unexpected problems. These problems may include new parts malfunctioning and failure or degradation of old functions. To avoid these problems, each version of software has to be thoroughly tested, not only to test the new parts, but also to verify that the old functions still work properly. Testing all the old functions is time and human resource consuming. Thus