Abstract
The turbo detection of a coded under-determined multiple-input multiple-output (UD-MIMO) system is studied in this paper. a UD-MIMO system with N transmit antennas and M < N receive antennas has more unknowns than the observations. However, most existing low complexity detectors, such as the vertical Bell Laboratories Layered Space-Time (V-BLAST) or the block decision feedback equalizer (BDFE), work only when M ≥ N. We propose a new turbo detector structure that combines the existing generalized parallel interference cancellation (GPIC) technique and a new generalized serial interference cancellation (GSIC) technique, with a soft-input soft-output (SISO) BDFE. in the first iteration, the GPIC-BDFE equalization is adopted. from the second iteration and beyond, due to the availability of the a priori soft information, the UD-MIMO system can be partitioned into multiple sub-systems by using a reliability-Based partition scheme. Then, the GSIC-BDFE equalization, which has a much lower complexity than the GPIC-BDFE equalization, can be used. Simulation results show that the new detection scheme achieves significant performance gain as the iteration progresses with a reasonable complexity. © 2011 IEEE.
Recommended Citation
M. L. Walker et al., "Low Complexity Turbo Detection of Coded Under-determined MIMO Systems," IEEE International Conference on Communications, article no. 5963231, Institute of Electrical and Electronics Engineers, Sep 2011.
The definitive version is available at https://doi.org/10.1109/icc.2011.5963231
Department(s)
Electrical and Computer Engineering
International Standard Book Number (ISBN)
978-161284233-2
International Standard Serial Number (ISSN)
0536-1486
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
02 Sep 2011
