Summary
The 2018 International Symposium on Information Theory and Its Applications　(ISITA2018)
2018
Session Number:Tu-AM-1-1
Session:
Number:Tu-AM-1-1.3
Shifted Coded Slotted ALOHA
Tomokazu Emoto, Takayuki Nozaki,
pp.291-295
Publication Date:2018/10/18
Online ISSN:2188-5079
DOI:10.34385/proc.55.Tu-AM-1-1.3
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Summary:
A random access scheme is a fundamental scenario in which users transmit through a shared channel and cannot coordinate with each other. In recent years, successive interference cancellation (SIC) is introduced into the random access scheme. It is possible to decode transmitted packets using collided packets by the SIC. The coded slotted ALOHA (CSA) is a random access scheme using the SIC. The CSA encodes each packet using a local code prior to transmission. It is known that the CSA achieves excellent throughput. On the other hand, it is reported that shift operation improves the decoding performance for packet-oriented erasure correcting coding system. In this paper, we propose a random access scheme which applies the shift operation to the CSA. Numerical examples show that our proposed random access scheme achieves better throughput and packet loss rate than the CSA.