Survey on development and research of cognitive radio networks at home and abroad
Changbiao Xu · Digital Communication · 2009
In order to study the development status of cognitive radio technology at home and abroad,a statistical analysis on the papers about cognitive radio teehnology in IEEE from 1999 to 2008 was proposed.Using the form of table,the overall research status,system/architecture design,spectrum sensing,spectrum decision,spectrum sharing,and spectrum switch were shown.Furthermore,these papers'research contents and openness for further study were summarized.At last,an overview of the cognitive radio researches in different research institutes and universities of world was presented.Statistical analysis shows that there are more researches on systen/structure design,spectrum sensing,and spectrum sharing,but the researches on the other aspects are poor,and America,Europe,and China have made some progress in cognitive radio technology.