Y. TakanoH.-J. SuHSUAN-JUNG SU2019-10-312019-10-312017https://scholars.lib.ntu.edu.tw/handle/123456789/430208Multiuser (MU)-multiple-input multiple-output (MIMO) receivers often need to take iterative strategies to cancel multiuser-interference (MUI). Frequency domain turbo equalization is one of the most promising solutions to the MUI problem. It offers a reasonable trade-off between the receiver performance and the computational complexity by assuming cyclic prefix (CP)-transmission. Nevertheless, CP-transmission is not preferable for the battery life of user terminals. Therefore, this paper proposes a new frequency domain multiuser-detection (MUD) technique by extending the chained turbo equalization (CHATUE) to MU-MIMO systems. Simulation results verify that the proposed MU-MIMO CHATUE algorithm is a more reliable option to improve the spectral- and/or energy-efficiency by eliminating the necessity of CP-transmission than by shortening the training sequences or puncturing the coded data bits. © 2017 IEEE.Cyclic prefix (CP); Multi-user interference (MUI); Overlap-and-add; Spectral efficiency[SDGs]SDG7Codes (symbols); Communication channels (information theory); Economic and social effects; Energy efficiency; Equalizers; Iterative methods; MIMO systems; Multiuser detection; Radio communication; Cyclic Prefix; Frequency-domain turbo equalizations; Multi-user interference; Overlap-and-add; Receiver performance; Spectral efficiencies; Training sequences; Turbo equalizations; Frequency domain analysisconference paper10.1109/pimrc.2017.82923142-s2.0-85045243761