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| Stochastic comb-pilot design for NC-OFDM based cognitive radio system＇ | |
| 基金项目： | Acknowledgments： This research was financed by the National Nature Science Foundation of China （No. 60872037） and Chongqing Nature Science Foundation of China （No. 2008BB2411）. |
| 摘 要： | NC-OFDM is a transmission mode of cognitive radio systems. The paper models and analyzes NC-OFDM stochastic process, then designs stochastic comb-pilot pattern and discusses its characteristics in detail. At the end of the paper simulation results show that channel estimation performance by Stochastic comb-pilots is better than those of conventional schemes, and prove feasibilities of the stochastic comb-pilot strategies in NC-OFDM system. |
| 关 键 词： | 通讯技术 无线电系统 OFDM技术 数控系统 |
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