节点文献
采用模拟网络编码的认知中继网络双向通信的最优功率分配(英文)
New Optimal Power Allocation for Bidirectional Communications in Cognitive Relay Network Using Analog Network Coding
【摘要】 Cognitive radio and cooperative communication can greatly improve the spectrum efficiency in wireless communications.We study a cognitive radio network where two secondary source terminals exchange their information with the assistance of a relay node under interference power constraints.In order to enhance the transmit rate and maintain fairness between two source terminals,a practical 2-phase analog network coding protocol is adopted and its optimal power allocation algorithm is proposed.Numerical results verify the superiority of the proposed algorithm over the conventional direct transmission protocol and 4-phase amplify-and-forward relay protocol.
【Abstract】 Cognitive radio and cooperative communication can greatly improve the spectrum efficiency in wireless communications.We study a cognitive radio network where two secondary source terminals exchange their information with the assistance of a relay node under interference power constraints.In order to enhance the transmit rate and maintain fairness between two source terminals,a practical 2-phase analog network coding protocol is adopted and its optimal power allocation algorithm is proposed.Numerical results verify the superiority of the proposed algorithm over the conventional direct transmission protocol and 4-phase amplify-and-forward relay protocol.
【Key words】 Cognitive Radio； Cooperative Communication； Analog Network Coding； Bidirectional Communications； Interference power constraint；
- 【文献出处】 中国通信 ,China Communications , 编辑部邮箱 ,2010年04期
- 【分类号】TN925
- 【被引频次】6
- 【下载频次】95