This paper proposes a new multi-user detection scheme for sparse code multiple access (SCMA) system in grant-free scenario. SCMA systems use a message passing algorithm which considers all user equipments (UEs) to be active. However, in a practical system, UEs do not always request resources. A multi-user detection procedure enables the decoder to mitigate interference from proper active UEs and to ignore the signal from inactive UEs. Therefore, we propose a multi-user detection scheme for SCMA system. The simulation results present that the proposed SCMA receiver structure achieves a remarkable enhancement in false alarm probability, miss detection probability.
|Title of host publication||2018 IEEE 88th Vehicular Technology Conference, VTC-Fall 2018 - Proceedings|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Publication status||Published - 2018 Jul 2|
|Event||88th IEEE Vehicular Technology Conference, VTC-Fall 2018 - Chicago, United States|
Duration: 2018 Aug 27 → 2018 Aug 30
|Name||IEEE Vehicular Technology Conference|
|Conference||88th IEEE Vehicular Technology Conference, VTC-Fall 2018|
|Period||18/8/27 → 18/8/30|
Bibliographical noteFunding Information:
This work was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2018R1A2A1A05021029) and by Institute for Information & communications Technology Promotion (IITP) grant funded by the Korea government (MSIP) (No. 2016-0-00181, Development on the core technologies of transmission, modulation, and coding with low-power and low-complexity for massive connectivity in the IoT environment).
© 2018 IEEE.
All Science Journal Classification (ASJC) codes
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics