Multiuser Detection Scheme for SCMA Systems Based on Serial Strategy

DU Yang; DONG Binhong; WANG Xianjun; DANG Guanbin; GAO Pengyu

doi:10.11999/JEIT151259

Volume 38 Issue 8

Sep. 2016

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Article Navigation > Journal of Electronics & Information Technology > 2016 > 38(8): 1888-1893

DU Yang, DONG Binhong, WANG Xianjun, DANG Guanbin, GAO Pengyu. Multiuser Detection Scheme for SCMA Systems Based on Serial Strategy[J]. Journal of Electronics & Information Technology, 2016, 38(8): 1888-1893. doi: 10.11999/JEIT151259

Citation:

DU Yang, DONG Binhong, WANG Xianjun, DANG Guanbin, GAO Pengyu. Multiuser Detection Scheme for SCMA Systems Based on Serial Strategy[J]. Journal of Electronics & Information Technology, 2016, 38(8): 1888-1893. doi: 10.11999/JEIT151259

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Multiuser Detection Scheme for SCMA Systems Based on Serial Strategy

doi: 10.11999/JEIT151259

Funds:

Huawei HIRP Project (YB2015040056), The National Natural Science Foundation of China (61201126), New Century Excellent Talents in University (NCET-11-0058), Sichuan Youth Science and Technology Fund (2012JQ0020), Open Research Fund of the National Laboratory (150C02006)

Received Date: 2015-11-09
Rev Recd Date: 2016-03-28
Publish Date: 2016-08-19

Abstract

Abstract

Sparse Code Multiple Access (SCMA) is a promising air-interface technology for 5 G wireless communication networks, which can enable massive connectivity. The existing multiuser detection schemes are based on a parallel message updating for Message Passing Algorithm (MPA), thus it is not efficient in terms of convergence. In this paper, an efficient multiuser detection scheme for uplink SCMA is proposed based on serial updating of function nodes, messages. Compared to the existing detection schemes, the proposed scheme accelerates the convergence due to that the updated messages can join the belief propagation immediately in current iteration, which avoids being used in the next iteration. Furthermore, the proposed scheme can reduce the storage burden, which fuses message passing process on the basis of the relationship between messages. Numerical results show that the proposed scheme can offer a good trade-off between complexity and Bit Error Rate (BER) performance.
- Sparse Code Multiple Access (SCMA),
- Multiuser detection,
- Message Passing Algorithm (MPA),
- Serial updating

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References(18)

References

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