TY - GEN
T1 - Soft Information Aided Diagonal Kalman Filter for Joint Channel Estimation and Detection in Massive MIMO Systems
AU - Hu, Xuanxiang
AU - Wang, Zheng
AU - Huang, Yongming
AU - Gao, Zhen
N1 - Publisher Copyright:
© 2026 IEEE.
PY - 2026
Y1 - 2026
N2 - This paper proposes a soft-information-aided diagonal Kalman filter (SIA-DKF) for joint channel estimation and symbol detection (JED) in massive multipleinput multiple-output (MIMO) systems. Specifically, building upon the Kalman filter (KF) framework for JED, the proposed SIA-DKF incorporates the symbol means and variances obtained from variational inference (VI) into the KF, improving its ability to track channels and mitigating mismatches in the update step. Furthermore, SIA-DKF not only exploits favorable propagation in massive MIMO to simplify the VI for symbol detection, but also employs a diagonal approximation of the covariance matrix at each channel update step, thereby significantly reducing the computational complexity. Simulations confirm that SIA-DKF improves the bit error rate (BER) with lower complexity.
AB - This paper proposes a soft-information-aided diagonal Kalman filter (SIA-DKF) for joint channel estimation and symbol detection (JED) in massive multipleinput multiple-output (MIMO) systems. Specifically, building upon the Kalman filter (KF) framework for JED, the proposed SIA-DKF incorporates the symbol means and variances obtained from variational inference (VI) into the KF, improving its ability to track channels and mitigating mismatches in the update step. Furthermore, SIA-DKF not only exploits favorable propagation in massive MIMO to simplify the VI for symbol detection, but also employs a diagonal approximation of the covariance matrix at each channel update step, thereby significantly reducing the computational complexity. Simulations confirm that SIA-DKF improves the bit error rate (BER) with lower complexity.
KW - favorable propagation
KW - joint channel estimation and symbol detection
KW - massive MIMO
KW - Soft-information-aided diagonal Kalman filter
UR - https://www.scopus.com/pages/publications/105042980160
U2 - 10.1109/WCNC65185.2026.11555638
DO - 10.1109/WCNC65185.2026.11555638
M3 - Conference contribution
AN - SCOPUS:105042980160
T3 - IEEE Wireless Communications and Networking Conference, WCNC
BT - 2026 IEEE Wireless Communications and Networking Conference, WCNC 2026
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2026 IEEE Wireless Communications and Networking Conference, WCNC 2026
Y2 - 13 April 2026 through 16 April 2026
ER -