Evaluation and optimization of asynchronous pulse code multiple access

To realize massive IoT environments, we proposed Asynchronous Pulse Code Multiple Access (APCMA). APCMA encodes information as intervals between pulses. The sparse signal of allows a large number devices to share the limited radio resources. In this paper, evaluate with variety setting and find that code division two duty cycle 0.01 % can provide 10000 per-device throughput about 3.46 bps 99 precision. It also is shown outperfoms LoRaWAN CDMA.