论文标题
与不完美SIC的下行链路Noma系统的自适应用户配对
Adaptive User Pairing for Downlink NOMA System with Imperfect SIC
论文作者
论文摘要
非正交多访问（NOMA）已被认为是第五代（5G）和5G蜂窝网络以外的关键驱动技术。对于具有不完美连续干扰取消（SIC）的实用Dowlink Noma系统，我们在NOMA用户之间的通道系数和功率分配因子上得出了比等效的正交多访问（OMA）系统更高的速率。我们为NOMA系统提出了一种自适应用户配对（A-UP）算法。通过广泛的模拟，我们表明具有不完美的SIC的Noma并不总是比OMA优越。此外，提出的A-UP A算法在存在SIC缺陷的情况下，与最先进的Noma配对算法相比，其性能更好。
Non-orthogonal multiple access (NOMA) has been recognized as a key driving technology for the fifth generation (5G) and beyond 5G cellular networks. For a practical dowlink NOMA system with imperfect successive interference cancellation (SIC), we derive bounds on channel coefficients and power allocation factors between NOMA users to achieve higher rates than an equivalent orthogonal multiple access (OMA) system. We propose an adaptive user pairing (A-UP) algorithm for NOMA systems. Through extensive simulations, we show that NOMA with imperfect SIC is not always superior to OMA. Further, the proposed A-UP algorithm results in better performance than state-of-the-art NOMA pairing algorithms in presence of SIC imperfections.
