Abstract
The quality of human speech through a communication system is referred to as mean opinion score and forms the basis of the project. It has been utilized as a key benchmark of sound quality over the years, and the need to have an optimal standard has been continuous. It is pertinent to note that GSM networks mainly offer voice services even as data demand has been on the rise. Many operators across around the world operate networks that yield MOS value that is below the standard in some areas. This study will comprehensively elaborate the causes of MOS degradations in some ...