说明：  由于本人还是学生，所以有图书馆的资源，本篇文献是来自symon haykin，在ieee上发表的具有总结性意义的文献，关于认知无线电的知识。
(Since I was a student, so a library of resources, this document is from symon haykin, published in ieee significance with summary documents, the knowledge on cognitive radio.)