论文标题
自适应$ \ Mathcal {M} $ - QAM中uplink-noma中多用户检测的错误性能分析
Error Performance Analysis of Multi-user Detection in Uplink-NOMA with Adaptive $\mathcal{M}$-QAM
论文作者
论文摘要
这项工作为多用户上行链路 - 诺马系统提供了广义性能分析，该系统具有自适应的正方形正交振幅调制（QAM），这是瑞利褪色通道的。由每个节点的正交资源的巨大物联网连接和不可用的动机，我们考虑了一个多访问方案，其中具有单个Antenna的多用户通过相同的资源块将数据传输到多 - 安特纳纳基地。通过利用将多样性路径与建议的关节最大似然检测器（JMLD）相结合的优势，获得了位错误率（BER）的上限的封闭形式表达式。尽管用户数量或调制顺序，但通过计算机模拟认可的分析结果揭示了MRC-JMLD检测器完全丢弃错误底的能力。此外，仿真结果表明，MRC-JMLD大大超过了同行，并确保了完全的多样性顺序。
This work provides a generalized performance analysis for the multi-user uplink-NOMA system with adaptive square quadrature amplitude modulation (QAM) over Rayleigh fading channels. Motivated by the massive IoT connections and unavailability of orthogonal resources for each node, we consider a multi-access scheme where multi-users with single-antenna transmit data to a multiple-antenna base station through the same resource block. By taking advantage of combining diversity paths with the proposed joint maximum-likelihood detector (JMLD), a closed form expression for the upper bound of bit error rate (BER) is obtained. Despite the number of users or the order of modulation, the analytical results endorsed via computer simulations reveal the ability of the MRC-JMLD detector to discard the error floor completely. Moreover, the simulation results show that the MRC-JMLD surpasses its counterparts significantly and ensures a full diversity order.
