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