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On opportunistic spectrum efficiency in cognitive radio systems |
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| Authors: | Wang Peng Zhong Xiaofeng Xiao Limin Zhou Shidong Wang Jing Bai Yong |
| Affiliation: | 1. State Key Laboratory on Microwave and Digital Communications,Tsinghua National Laboratory for Information Science and Technology,Department of Electronic Engineering,Tsinghua University,Beijing 100084,P.R.China 2. DoCoMo Beijing Communications Laboratories Compary Limited,Beijing 100080,P.R.China |
| Abstract: | The performance bound of cognitive radio systems is analyzed.We use opportunistic spectrum effi- ciency(OSE)as the performance metric,and point out that the maximum achievable OSE can be used to evaluate the maximum value that the introduction of secondary users can add to the conventional wireless systems.Based on assumptions of the PU s traffic model and some reasonable approximations,the ex- pression of OSE is obtained and the maximum achievable OSE is derived by solving an optimization prob- lem.The res... |
| Keywords: | cognitive radio opportunistic spectrum access opportunistic spectrum efficiency |
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