论文标题
硬件和干扰有限的合作CR-NOMA网络在不完美的SIC和CSI下
Hardware and Interference Limited Cooperative CR-NOMA Networks under Imperfect SIC and CSI
论文作者
论文摘要
认知无线电（CR）和非正交多访问（NOMA）概念的融合是实现频谱稀缺的未来网络的庞大连通性目标的一种有前途的方法。因此，这封信调查了在硬件障碍和干扰下不完美的合作CR-NOMA网络的中断性能。我们的分析涉及次级NOMA用户的端到端停电概率（OP），通过考虑不完善的通道状态信息（CSI），以及由连续的干扰取消（SIC）错误引起的残余干扰以及共存的初级/二级用户。通过蒙特卡洛模拟验证的数值结果表明，CR-NOMA网络比正交多访问提供了出色的中断性能。随着瑕疵变得越来越重要，观察到CR-Noma可以提供相对较差的中断性能。
The conflation of cognitive radio (CR) and nonorthogonal multiple access (NOMA) concepts is a promising approach to fulfil the massive connectivity goals of future networks given the spectrum scarcity. Accordingly, this letter investigates the outage performance of imperfect cooperative CR-NOMA networks under hardware impairments and interference. Our analysis is involved with the derivation of the end-to-end outage probability (OP) for secondary NOMA users by accounting for imperfect channel state information (CSI), as well as the residual interference caused by successive interference cancellation (SIC) errors and coexisting primary/secondary users. The numerical results validated by Monte Carlo simulations show that CR-NOMA network provides a superior outage performance over orthogonal multiple access. As imperfections become more significant, CR-NOMA is observed to deliver relatively poor outage performance.
