论文标题
具有独立多人方案的基于争论的无授予传输
Contention-based Grant-free Transmission with Independent Multi-pilot Scheme
论文作者
论文摘要
对于未来的大规模机器类型通信（MMTC）来说，基于争夺的赠款传输非常有前途。在基于争论的传输中，随机飞行员碰撞是一个具有挑战性的问题。为了解决此问题，使用多个飞行员方案来减少飞行员碰撞。但是，多个飞行员的现有工作依赖于空间渠道的低相关性，从而限制了其适用性。在本文中，提出了一种独立的多杆计划，该方案利用了多个飞行员的多样性，并且不受空间相关性的限制。接收器对数据符号和多个飞行员都采用干扰取消，以确保性能。仿真结果还表明，所提出的独立多杆计划可以显着提高BLER性能并增加同时访问用户的数量。
Contention-based grant-free transmission is very promising for future massive machine-type communication (mMTC). In contention-based transmission, the random pilot collision is a challenging problem. To solve this problem, multiple pilots scheme is used to reduce the pilot collision probabliltiy. However, the existing work on multiple pilots relies on the low correlation of spatial channels, limiting its applicability. In this paper, an independent multi-pilot scheme is proposed, which utilizes the diversity of multiple pilots and is not limited by the spatial correlation. The receiver employs interference cancellation for both data symbols and multiple pilots to ensure the performance. The simulation results also show that the proposed independent multi-pilot scheme can significantly improve the BLER performance and increase the number of simultaneous access users.
