An Efficient Resource Allocation Scheme for OFDMA-Based Cooperative Cognitive Radio Networks with Minimum Power Constraint

被引：0
|
作者：
Hashemi, Yoones [1 ]
Olfat, Ali [1 ]
机构：
[1] Univ Tehran, Dept Elect & Comp Engn, Tehran, Iran
来源：
2012 SIXTH INTERNATIONAL SYMPOSIUM ON TELECOMMUNICATIONS (IST) | 2012年
关键词：
OFDMA; cooperative; cognitive; resource allocation; JOINT SUBCARRIER; TRANSMISSION;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel resource allocation algorithm for OFDMA-based cooperative cognitive radio network is proposed. Sum-capacity of Primary Users (PUs) is maximized under minimum power constraint. We design a sub-optimum algorithm with low complexity. In this manner, though sum-capacity does not change significantly, Outage probability of systems decrease considerably. The algorithm is also modified to improve active PUs in the network. Difference between optimum and sub-optimum schemes is shown to be negligible in simulation results. These algorithms aim to increase subcarriers of secondary users.
引用
收藏
页码：176 / 181
页数：6
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