naa a22 4500 510796192 CHVBK 20180411083337.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1007/s11277-012-0509-6 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0509-6 Joint Frequency-Domain Multiuser Turbo Equalization with Successive Interference Cancellation for Doubly-Selective Fading Channels [Elektronische Daten] [Jian Zhang, Yahong Zheng] A novel multiuser separation and equalization scheme is proposed for single carrier wireless communication systems integrating frequency-domain (FD) multiuser turbo equalization (MUTE) and successive interference cancellation (SIC). The proposed iterative structure consists of multiple layers of detection, and at each layer the user with strongest power is processed by a frequency-domain multiuser equalizer to yield the soft extrinsic information on the coded bits of that user, which is delivered to a channel decoder after deinterleaving. The extrinsic information gleaned by the decoder is fed back to both the current and previous multiuser equalizers for the next iteration as a-priori information. The soft symbols of the current user are evaluated by the a-posteriori information of coded bits provided by the multiuser equalizer, and the interference reconstructed by the current user's soft symbols is canceled out from the received signals in frequency domain. The interference-canceled signals are fed forward to subsequent layers for detection of other users. The proposed scheme effectively mitigates multiple access interference and intersymbol interference by an iterative (turbo) detection method. Numerical simulation examples demonstrate that the proposed FD MUTE with SIC outperforms the traditional MMSE multiuser equalizer over the severely doubly-selective channels, and the bit-error-rate performance tends to be better with the increase of iterations. Springer Science+Business Media, LLC., 2012 Multiuser detection nationallicence Turbo equalization nationallicence Successive interference cancellation nationallicence Frequency domain nationallicence Zhang Jian Broadcom Corp., San Diego, CA, USA aut Zheng Yahong Department of Electrical and Computer Engineering, Missouri University of Science and Technology, 65409, Rolla, MO, USA aut Wireless Personal Communications Springer US; http://www.springer-ny.com 68/4(2013-02-01), 1317-1330 0929-6212 68:4<1317 2013 68 11277 https://doi.org/10.1007/s11277-012-0509-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0509-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Jian Broadcom Corp., San Diego, CA, USA aut NATIONALLICENCE 700 1- Zheng Yahong Department of Electrical and Computer Engineering, Missouri University of Science and Technology, 65409, Rolla, MO, USA aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 68/4(2013-02-01), 1317-1330 0929-6212 68:4<1317 2013 68 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer