Design and Implementation of a Throughput Improvement Method for Asynchronous Pulse Code Multiple Access
- Resource Type
- Conference
- Authors
- Nakamura, Atsushi; Peper, Ferdinand; Leibnitz, Kenji; Wakamiya, Naoki; Hasegawa, Mikio
- Source
- 2023 Fourteenth International Conference on Ubiquitous and Future Networks (ICUFN) Ubiquitous and Future Networks (ICUFN), 2023 Fourteenth International Conference on. :157-162 Jul, 2023
- Subject
- Communication, Networking and Broadcast Technologies
Computing and Processing
Signal Processing and Analysis
Power demand
Codes
Radio transmitters
Receivers
Throughput
Demodulation
LPWA
Massive IoT
APCMA
- Language
- ISSN
- 2165-8536
APCMA is a pulse code-based communication method designed for massive IoT. This method is collision-resistant and suitable for high-density environments but has the disadvantage of long message lengths and low throughput. In this paper, we propose a method to improve throughput by using sub-slots to solve this drawback. In addition, we introduce two demodulation techniques: frequency offset detection and sliding window. We implemented the proposed method using USRP and GNU Radio and conducted experiments. Experimental results show that the proposed method has higher throughput than the conventional APCMA and a higher success rate and throughput than LoRa in high-density environments.