TY - GEN
T1 - Robust MMSE Based Intra-Tier precoding Design for A VFDM System
AU - Yao, Rugui
AU - Yao, Lukun
AU - Gao, Yan
AU - Zuo, Xiaoya
AU - Zhang, Yuxin
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/9/13
Y1 - 2018/9/13
N2 - Vandermonde-subspace frequency division multiplexing (VFDM) utilizes frequency-domain degrees of freedom (DoFs) to implement spectrum sharing. In this paper, a robust intra-tier precoder (ITP) is devised to suppress the interference for VFDM based small cell (SC) considering imperfect Gaussian distributed estimation error. We formulate the ITP design as a minimum mean square error (MMSE) optimization, where the total mean square error (MSE) is carefully derived. Considering the complexity of the solution, we then proposed an iterative algorithm to find the optimized robust ITP. Numerical results are presented to validate that the proposed algorithm can achieve lower mean square error (MSE) than the traditional one does.
AB - Vandermonde-subspace frequency division multiplexing (VFDM) utilizes frequency-domain degrees of freedom (DoFs) to implement spectrum sharing. In this paper, a robust intra-tier precoder (ITP) is devised to suppress the interference for VFDM based small cell (SC) considering imperfect Gaussian distributed estimation error. We formulate the ITP design as a minimum mean square error (MMSE) optimization, where the total mean square error (MSE) is carefully derived. Considering the complexity of the solution, we then proposed an iterative algorithm to find the optimized robust ITP. Numerical results are presented to validate that the proposed algorithm can achieve lower mean square error (MSE) than the traditional one does.
KW - imperfect channel state information (CSI)
KW - Interference alignment (IA)
KW - minimum mean square error (MMSE)
KW - robust precoding
UR - http://www.scopus.com/inward/record.url?scp=85054545156&partnerID=8YFLogxK
U2 - 10.1109/ICT.2018.8464857
DO - 10.1109/ICT.2018.8464857
M3 - 会议稿件
AN - SCOPUS:85054545156
SN - 9781538623213
T3 - 2018 25th International Conference on Telecommunications, ICT 2018
SP - 32
EP - 36
BT - 2018 25th International Conference on Telecommunications, ICT 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 25th International Conference on Telecommunications, ICT 2018
Y2 - 26 June 2018 through 28 June 2018
ER -