Analysis and Prediction of Interference Factors and Their Impact on the Future

This paper is based on the theme that although there have been, admittedly, many instances of spectrum crowding, and many specific examples can be cited, no one knows just how crowded the available spectrum is. This is because quantitative measures of the use of this important natural resource are not established. The factors contributing to spectrum crowding are outlined briefly and suggestions for the development of methods for determining their importance are made.