The Unreliability of the C language has been in the forefront due to multiple memory access violations. Various methods have been devised to detect memory errors at runtime but are unable to detect all of them. These hurdles give rise to a various problems such as manual code modification, usage of metadata which is unsuited and high runtime outlays. This type of overwhelming conditions give rise to various compiler analysis tools which ensures the memory safety of C programs at runtime while avoiding any possible shortcomings and also help to lower the runtime cost of attaining memory safety.

Spectrum sensing is the main aspect of Cognitive Radio. There are several spectrum sensing techniques but the idea of the Direction of Arrival of the signal when the signal is sensed is equally important. Many methods have been implemented and new methods are coming up to estimate the Direction of Arrival of a signal. Implementation of Direction of Arrival using MUSIC, Root-MUSIC, and ESPRIT Algorithm is done in TV Band frequency spectrum and results have been verified and also plotted. Goal is to implement as many Direction of Arrival techniques and compare them to find the best technique with precise result and less complexity.