SCRAM: A Novel Approach for Reliable Ultra-Low Latency M2M Applications

Conference contribution


Publication Details

Author(s): Nafie S, Robert J, Heuberger A
Publisher: Institute of Electrical and Electronics Engineers Inc.
Publication year: 2019
Volume: 2018-August
Conference Proceedings Title: IEEE Vehicular Technology Conference
ISBN: 9781538663585
ISSN: 15502252


Abstract

This paper presents a novel hybrid decoder dubbed SCRAM (Slotted Coded Random Access Multiplexing), for Coded Slotted ALOHA (CSA). The proposed decoder is provisioned to meet the challenging requirements of the future Machine to Machine (M2M) Internet of Things (IoT) in the 5G standard. These challenges are mainly portrayed in a reliable robust communication with ultra-low latency. At the User Equipment (UE) terminal, a Low Density Parity Check (LDPC) encoder is deployed, and the encoded codewords are transmitted on the uplink channel using Slotted ALOHA (SA). While LDPC codes are chosen because of their near Shannon capacity performance, SA serves as a Random Access (RA) mechanism that guarantees the low-latency requirements. However, the incorporation of uncoordinated SA introduces collisions between the transmitted packets. The proposed decoder aims at resolving these collisions by means of a joint LDPC-SA hybrid decoder. Unlike the sequential decoders presented in the literature, the proposed joint decoder concurrently decodes both the SA and LDPC blocks in a similar fashion to the Belief Propagation (BP) algorithm applied for LDPC codes. The results presented herein show that the proposed SCRAM decoder significantly outperforms the state-of-the-art decoding schemes of CSA by more than 5.5 dB.


FAU Authors / FAU Editors

Heuberger, Albert Prof. Dr.-Ing.
Lehrstuhl für Informationstechnik mit dem Schwerpunkt Kommunikationselektronik (Stiftungslehrstuhl)
Nafie, Sally
Lehrstuhl für Informationstechnik mit dem Schwerpunkt Kommunikationselektronik (Stiftungslehrstuhl)
Robert, Jörg
Lehrstuhl für Informationstechnik mit dem Schwerpunkt Kommunikationselektronik (Stiftungslehrstuhl)


How to cite

APA:
Nafie, S., Robert, J., & Heuberger, A. (2019). SCRAM: A Novel Approach for Reliable Ultra-Low Latency M2M Applications. In IEEE Vehicular Technology Conference. Chicago, IL, US: Institute of Electrical and Electronics Engineers Inc..

MLA:
Nafie, Sally, Jörg Robert, and Albert Heuberger. "SCRAM: A Novel Approach for Reliable Ultra-Low Latency M2M Applications." Proceedings of the 88th IEEE Vehicular Technology Conference, VTC-Fall 2018, Chicago, IL Institute of Electrical and Electronics Engineers Inc., 2019.

BibTeX: 

Last updated on 2019-13-05 at 13:23