论文标题
具有功率放大器非线性的旋转系统的信息能量能力区域
Information-Energy Capacity Region for SWIPT Systems with Power Amplifier Nonlinearity
论文作者
论文摘要
我们在存在高功率放大器（HPA）非线性的情况下研究添加剂白色高斯噪声（AWGN）通道的信息能量能力区域（IE-CR）。具体而言，我们考虑了一个三节点网络，该网络由一个发射机，一个信息接收器和一个能量接收器组成，我们研究了i）i）i）i）发射机的平均功率，峰值限制，b）hpa在发射机处的HPA非线性以及c）能量接收器的能量收获电路的非线性。我们证明了输入分布是离散和有限的，我们为最大化收获能量和最大化信息容量的特殊情况提供了封闭形式的表达式。我们表明，HPA大大减少了可实现的IE-CR；为了补偿HPA的非线性，还根据IE-CR性能讨论和评估了一种预性技术。
We study the information-energy capacity region (IE-CR) of an additive white Gaussian noise (AWGN) channel in the presence of high-power amplifier (HPA) nonlinearity. Specifically, we consider a three-node network consisting of one transmitter, one information receiver and one energy receiver and we study the capacity-achieving input distribution under i) average-power, peak-power constraints at the transmitter, b) HPA nonlinearity at the transmitter, and c) nonlinearity of the energy harvesting circuit at the energy receiver. We prove that the input distribution is discrete and finite and we derive closed form expressions for the special cases of maximizing the harvested energy and maximizing the information capacity. We show that HPA significantly reduces the achievable IE-CR; to compensate HPA nonlinearity, a predistortion technique is also discussed and evaluated in terms of IE-CR performance.
