An Iterative Multiuser Detection/Decoding for Nonbinary LDPC Coded MC-MFSK Multiple Access Systems
- 10.2991/ccit-14.2014.59How to use a DOI?
- Nonbinary LDPC codes, Multicarrier MFSK, Multiple Access.
This paper studies an iterative multiuser detection and decoding for nonbinary low density parity check (LDPC) coded multicarrier M-ary frequency shift keying (MC MFSK) multiple access system to increase system spectral efficiency under specific signal-to-noise ratio. At multiuser detection side, soft metric for each symbol is quantized to 2 levels (2L) or 3 levels (3L) and then pass to the decoder. When the soft output of a symbol from decoder exceeds a threshold, the user is declared as a reliable symbol. The reliable information is fed back to the detection side and updates the symbol soft output when iterative processing is carried out. Numerical results show that system spectral efficiency is improved for 3L system over Rayleigh fading.
- © 2014, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Szu-Lin Su AU - Her-Chang Tsai PY - 2014/01 DA - 2014/01 TI - An Iterative Multiuser Detection/Decoding for Nonbinary LDPC Coded MC-MFSK Multiple Access Systems BT - Proceedings of the 2014 International Conference on Computer, Communications and Information Technology PB - Atlantis Press SP - 224 EP - 227 SN - 1951-6851 UR - https://doi.org/10.2991/ccit-14.2014.59 DO - 10.2991/ccit-14.2014.59 ID - Su2014/01 ER -