论文标题
一种新颖的随机访问方案，用于在拥挤的异步大型MIMO系统中进行M2M通信
A novel random access scheme for M2M communication in crowded asynchronous massive MIMO systems
论文作者
论文摘要
提出了一种新的随机访问方案，以解决拥挤异步的大规模多输入多输出（MIMO）系统中的M2M通信的细胞内飞行员碰撞。所提出的方案利用旋转不变性技术增强信号参数的估计（ESPRIT-E）方法来估计有效的时序偏移，然后主动UES从有效的时机偏移中获得上行链路链接消息传输的有效正时偏移。我们分析了UES的估计有效计时偏移和上行链路吞吐量的平均平方误差。仿真结果表明，与拥挤的异步大型MIMO系统的退出随机访问方案相比，提出的方案可以改善上行链路吞吐量，并同时准确地估算有效的时机偏移。
A new random access scheme is proposed to solve the intra-cell pilot collision for M2M communication in crowded asynchronous massive multiple-input multiple-output (MIMO) systems. The proposed scheme utilizes the proposed estimation of signal parameters via rotational invariance technique enhanced (ESPRIT-E) method to estimate the effective timing offsets, and then active UEs obtain their timing errors from the effective timing offsets for uplink message transmission. We analyze the mean squared error of the estimated effective timing offsets of UEs, and the uplink throughput. Simulation results show that, compared to the exiting random access scheme for the crowded asynchronous massive MIMO systems, the proposed scheme can improve the uplink throughput and estimate the effective timing offsets accurately at the same time.
