A novel SCMA system for coexistence of active users and inactive users

Joonki Kim; Kwonjong Lee; Jintae Kim; Hano Wang; Minsoo Na; Daesik Hong

doi:10.1109/LCOMM.2017.2749220

A novel SCMA system for coexistence of active users and inactive users

Joonki Kim, Kwonjong Lee, Jintae Kim, Hano Wang, Minsoo Na, Daesik Hong

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

This letter proposes a new sparse code multiple access (SCMA) system for handling the coexistence of active user equipments (UEs) and inactive UEs, which share the same frequency/time resources for an uplink grant-free scenario. SCMA systems use a message passing algorithm, which considers all UEs to be active UEs. Therefore, inactive UEs cause significant decoding problem in SCMA systems. In order to solve the coexistence problem, we propose code words and a novel SCMA receiver which can distinguish the signal of active/inactive UEs. The numerical results show that the proposed SCMA receiver achieves a remarkable enhancement in false alarm probability, miss detection probability, and bit-error rate.

Original language	English
Pages (from-to)	2730-2733
Number of pages	4
Journal	IEEE Communications Letters
Volume	21
Issue number	12
DOIs	https://doi.org/10.1109/LCOMM.2017.2749220
Publication status	Published - 2017 Dec

Bibliographical note

Funding Information:
Manuscript received July 29, 2017; accepted August 27, 2017. Date of publication September 5, 2017; date of current version December 8, 2017. This work was supported in part by the National Research Foundation of Korea(NRF) grant funded by the Korea government (NRF-2015R1A2A1A01006162) and in part by Institute for Information & communications Technology Promotion (IITP) grant funded by the Korea government (MSIP) (No. R0101-16-244, Development of 5G Mobile Communication Technologies for Hyper-connected smart services) and grant funded by the Korea government (MSIT) (2016-0-00181-002, Development on the core technologies of transmission, modulation and coding with low-power and lowcomplexity for massive connectivity in the IoT environment). The associate editor coordinating the review of this letter and approving it for publication was A. Lioumpas. (Corresponding author: Daesik Hong.) J. Kim, K. Lee, J. Kim, and D. Hong are with ITL, Yonsei University, Seoul 03722, South Korea (e-mail: promark@yonsei.ac.kr; leekwjo@yonsei.ac.kr; in3614@yonsei.ac.kr; daesikh@yonsei.ac.kr).

Publisher Copyright:
© 2017 IEEE.

All Science Journal Classification (ASJC) codes

Modelling and Simulation
Computer Science Applications
Electrical and Electronic Engineering

Access to Document

10.1109/LCOMM.2017.2749220

Fingerprint Dive into the research topics of 'A novel SCMA system for coexistence of active users and inactive users'. Together they form a unique fingerprint.

Cite this

@article{c69dabec74484227ae59ba094adb9a3d,

title = "A novel SCMA system for coexistence of active users and inactive users",

abstract = "This letter proposes a new sparse code multiple access (SCMA) system for handling the coexistence of active user equipments (UEs) and inactive UEs, which share the same frequency/time resources for an uplink grant-free scenario. SCMA systems use a message passing algorithm, which considers all UEs to be active UEs. Therefore, inactive UEs cause significant decoding problem in SCMA systems. In order to solve the coexistence problem, we propose code words and a novel SCMA receiver which can distinguish the signal of active/inactive UEs. The numerical results show that the proposed SCMA receiver achieves a remarkable enhancement in false alarm probability, miss detection probability, and bit-error rate.",

author = "Joonki Kim and Kwonjong Lee and Jintae Kim and Hano Wang and Minsoo Na and Daesik Hong",

note = "Funding Information: Manuscript received July 29, 2017; accepted August 27, 2017. Date of publication September 5, 2017; date of current version December 8, 2017. This work was supported in part by the National Research Foundation of Korea(NRF) grant funded by the Korea government (NRF-2015R1A2A1A01006162) and in part by Institute for Information & communications Technology Promotion (IITP) grant funded by the Korea government (MSIP) (No. R0101-16-244, Development of 5G Mobile Communication Technologies for Hyper-connected smart services) and grant funded by the Korea government (MSIT) (2016-0-00181-002, Development on the core technologies of transmission, modulation and coding with low-power and lowcomplexity for massive connectivity in the IoT environment). The associate editor coordinating the review of this letter and approving it for publication was A. Lioumpas. (Corresponding author: Daesik Hong.) J. Kim, K. Lee, J. Kim, and D. Hong are with ITL, Yonsei University, Seoul 03722, South Korea (e-mail: promark@yonsei.ac.kr; leekwjo@yonsei.ac.kr; in3614@yonsei.ac.kr; daesikh@yonsei.ac.kr). Publisher Copyright: {\textcopyright} 2017 IEEE.",

year = "2017",

month = dec,

doi = "10.1109/LCOMM.2017.2749220",

language = "English",

volume = "21",

pages = "2730--2733",

journal = "IEEE Communications Letters",

issn = "1089-7798",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "12",

}

TY - JOUR

T1 - A novel SCMA system for coexistence of active users and inactive users

AU - Kim, Joonki

AU - Lee, Kwonjong

AU - Kim, Jintae

AU - Wang, Hano

AU - Na, Minsoo

AU - Hong, Daesik

N1 - Funding Information: Manuscript received July 29, 2017; accepted August 27, 2017. Date of publication September 5, 2017; date of current version December 8, 2017. This work was supported in part by the National Research Foundation of Korea(NRF) grant funded by the Korea government (NRF-2015R1A2A1A01006162) and in part by Institute for Information & communications Technology Promotion (IITP) grant funded by the Korea government (MSIP) (No. R0101-16-244, Development of 5G Mobile Communication Technologies for Hyper-connected smart services) and grant funded by the Korea government (MSIT) (2016-0-00181-002, Development on the core technologies of transmission, modulation and coding with low-power and lowcomplexity for massive connectivity in the IoT environment). The associate editor coordinating the review of this letter and approving it for publication was A. Lioumpas. (Corresponding author: Daesik Hong.) J. Kim, K. Lee, J. Kim, and D. Hong are with ITL, Yonsei University, Seoul 03722, South Korea (e-mail: promark@yonsei.ac.kr; leekwjo@yonsei.ac.kr; in3614@yonsei.ac.kr; daesikh@yonsei.ac.kr). Publisher Copyright: © 2017 IEEE.

PY - 2017/12

Y1 - 2017/12

N2 - This letter proposes a new sparse code multiple access (SCMA) system for handling the coexistence of active user equipments (UEs) and inactive UEs, which share the same frequency/time resources for an uplink grant-free scenario. SCMA systems use a message passing algorithm, which considers all UEs to be active UEs. Therefore, inactive UEs cause significant decoding problem in SCMA systems. In order to solve the coexistence problem, we propose code words and a novel SCMA receiver which can distinguish the signal of active/inactive UEs. The numerical results show that the proposed SCMA receiver achieves a remarkable enhancement in false alarm probability, miss detection probability, and bit-error rate.

AB - This letter proposes a new sparse code multiple access (SCMA) system for handling the coexistence of active user equipments (UEs) and inactive UEs, which share the same frequency/time resources for an uplink grant-free scenario. SCMA systems use a message passing algorithm, which considers all UEs to be active UEs. Therefore, inactive UEs cause significant decoding problem in SCMA systems. In order to solve the coexistence problem, we propose code words and a novel SCMA receiver which can distinguish the signal of active/inactive UEs. The numerical results show that the proposed SCMA receiver achieves a remarkable enhancement in false alarm probability, miss detection probability, and bit-error rate.

UR - http://www.scopus.com/inward/record.url?scp=85029174910&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85029174910&partnerID=8YFLogxK

U2 - 10.1109/LCOMM.2017.2749220

DO - 10.1109/LCOMM.2017.2749220

M3 - Article

AN - SCOPUS:85029174910

VL - 21

SP - 2730

EP - 2733

JO - IEEE Communications Letters

JF - IEEE Communications Letters

SN - 1089-7798

IS - 12

ER -

A novel SCMA system for coexistence of active users and inactive users

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Cite this