Chip-by-Chip iterative multiuser detection for VBLAST coded multiple-input multiple-output systems

Authors:
Ke Deng;Qinye Yin;Yiwen Zhang;Ming Luo
Affiliations:
Institute of Information Engineering, School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, China;Institute of Information Engineering, School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, China;Institute of Information Engineering, School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, China;Institute of Information Engineering, School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, China
Venue:
ICN'05 Proceedings of the 4th international conference on Networking - Volume Part II
Year:
2005

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Abstract

We propose a vertical Bell Lab's space-time (VBLAST) coded MIMO transceiver scheme and its iterative (turbo) multiuser detection algorithm. Unlike other multiuser schemes, users in this scheme are distinguished by different chip-level interleavers. Consequently, the maximum number of available users increases a lot. The proposed multiuser detection algorithm is based on the turbo multiuser one, which is not only computationally efficient compared with the conventional optimal maximum likelihood decoder, but also achieves a probability of error performance being smaller than the traditional VBLAST schemes under the same operation conditions.