论文标题
使用正交飞行员多个阶段的大量MIMO接收器，未包含的随机访问
Unsourced Random Access with a Massive MIMO Receiver Using Multiple Stages of Orthogonal Pilots
论文作者
论文摘要
我们研究了带有多个天线的接收器，研究了未包含的随机访问（URA）的问题。我们采用多个正交飞行员的阶段，每个飞行员都是从密码手册中随机挑选的。在提出的方案中，每个用户使用极地代码编码其消息，并将其附加到选定的飞行员序列中以构建其传输信号。因此，接收的信号由用户信号的叠加组成，每个信号由多个正交飞行员零件和极地编码零件组成。我们使用迭代方法来解码传输消息以及合适的连续干扰取消方案。通过广泛的仿真结果表明，提出的方案的性能表明，它表明它的表现明显优于URA的现有方法，而不是多输入多数输出褪色通道。
We study the problem of unsourced random access (URA) over Rayleigh block-fading channels with a receiver equipped with multiple antennas. We employ multiple stages of orthogonal pilots, each of which is randomly picked from a codebook. In the proposed scheme, each user encodes its message using a polar code and appends it to the selected pilot sequences to construct its transmitted signal. Accordingly, the received signal consists of superposition of the users' signals each composed of multiple orthogonal pilot parts and a polar coded part. We use an iterative approach for decoding the transmitted messages along with a suitable successive interference cancellation scheme. Performance of the proposed scheme is illustrated via extensive set of simulation results which show that it significantly outperforms the existing approaches for URA over multiple-input multiple-output fading channels.
