在交叉共享方式下,为了提高感知系统性能,提出一种联合优化方案.在保证一定频谱感测性能指标的前提下,通过优化感测时间和功率分配,得到最小化感知系统的中断概率.理论分析和仿真结果表明,优化方案能有效改善感知系统的中断性能,提升感知网络传输的可靠性.
In overlay sharing cognitive radio networks, an optimal scheme is proposed for improving cognitive system performance, it proves to minimize the outage probability on the premise of guarantee fixed detection performance. Analysis and simulation show that the optimal scheme can improve outage performance of cognitive system and enhance transmission reliability of cognitive network.