  With the advent of big data and deep learning, computation power has become a
bottleneck for many applications. Network-on-Chip (NoC) has been proposed to
enable multiprocessor acceleration for deep learning computation, and efficient
arbitration is a key issue for high performance. In this paper, an arbitration
scheme based on interference of wave is proposed. In this scheme, home node
sends out multiple tokens in different frequencies, and nodes that are
competing for bus can capture token by sending out wave that cancels its
specific wave token. In this scheme, speed-of-light arbitration can be
achieved, and full information is available to all nodes in arbitration.
