TY - GEN
T1 - Improved symbol-based belief propagation detection for large-scale MIMO
AU - Yang, Junmei
AU - Zhang, Chuan
AU - Liang, Xiao
AU - Xu, Shugong
AU - You, Xiaohu
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/12/2
Y1 - 2015/12/2
N2 - In this paper, BP detection based on belief propagation in real domain for large-scale MIMO systems is proposed. Numerical results have shown that, with quadrature phase shift keying (QPSK) modulation, this approach can show 1 dB performance improvement at the BER of 10-2, compared to conventional single-edge based BP (SE-BP) in complex domain. Based on the proposed BP detection, its symbol-based variation is also investigated for applications in large-scale MIMO systems with a high-order modulation. This symbol-based method successfully reduces computational complexity by avoiding large dimensional matrix inversion and decomposition. Since the proposed method can also shrink the constellation size, its complexity can be further reduced. Numerical simulation results and complexity comparison have demonstrated that the proposed symbol-based BP detection can show advantages in both performance and complexity compared to existing ones. Therefore, it is suitable for large-scale MIMO system applications, especially for those with high-order modulations.
AB - In this paper, BP detection based on belief propagation in real domain for large-scale MIMO systems is proposed. Numerical results have shown that, with quadrature phase shift keying (QPSK) modulation, this approach can show 1 dB performance improvement at the BER of 10-2, compared to conventional single-edge based BP (SE-BP) in complex domain. Based on the proposed BP detection, its symbol-based variation is also investigated for applications in large-scale MIMO systems with a high-order modulation. This symbol-based method successfully reduces computational complexity by avoiding large dimensional matrix inversion and decomposition. Since the proposed method can also shrink the constellation size, its complexity can be further reduced. Numerical simulation results and complexity comparison have demonstrated that the proposed symbol-based BP detection can show advantages in both performance and complexity compared to existing ones. Therefore, it is suitable for large-scale MIMO system applications, especially for those with high-order modulations.
KW - belief propagation (BP)
KW - iterative detection
KW - Large-scale MIMO
KW - message passing
KW - symbol-based
UR - http://www.scopus.com/inward/record.url?scp=84958213415&partnerID=8YFLogxK
U2 - 10.1109/SiPS.2015.7345035
DO - 10.1109/SiPS.2015.7345035
M3 - Conference Proceeding
AN - SCOPUS:84958213415
T3 - IEEE Workshop on Signal Processing Systems, SiPS: Design and Implementation
BT - Electronic Proceedings of the 2015 IEEE International Workshop on Signal Processing Systems, SiPS 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE International Workshop on Signal Processing Systems, SiPS 2015
Y2 - 14 October 2015 through 16 October 2015
ER -