论文标题
部分可观测时空混沌系统的无模型预测
A New Rate Splitting Strategy for Uplink CR-NOMA Systems
论文作者
论文摘要
在上行链路非正交多访问（NOMA）渠道中，现有的合作连续干扰取消（SIC）和功率控制（PC）方案缺乏实现完整容量区域的能力，从而限制了Uplink Noma用户的中断性能。对于上行链路认知无线电启发的NOMA系统，我们提出了一种新的速率分解（RS）策略，以最大程度地提高次级用户的可实现率，而不会降低主要用户的停机性能。基于干扰阈值及其自身的频道增益，二级用户可以自适应地进行RS，传输功率分配和SIC，从而有效地利用了发射功率。停电概率的封闭式表达式是为二级用户得出的。数值结果表明，所提出的RS方案在现有的合作SIC和PC方案中实现了二级用户的最佳停战性能。
In uplink non-orthogonal multiple access (NOMA) channels, the existing cooperative successive interference cancellation (SIC) and power control (PC) schemes lack the capability of achieving the full capacity region, which restricts the outage performance of uplink NOMA users. For the uplink cognitive radio inspired NOMA system, we propose a new rate splitting (RS) strategy to maximize the achievable rate of the secondary user without deteriorating the primary user's outage performance. Based on the interference threshold and its own channel gain, the secondary user adaptively conducts RS, transmit power allocation and SIC, which utilizes the transmit power efficiently. The closed-form expression for the outage probability is derived for the secondary user. Numerical results show that the proposed RS scheme achieves the best outage performance for the secondary user among the existing cooperative SIC and PC schemes.
