Frequency Domain Turbo Equalization under MMSE Criterion for Single Carrier MIMO Systems
In this paper, we study the design of frequency domain turbo equalization (FDTE) in single carrier (SC) multiple-input multiple-output (MIMO) systems, and prove the equivalence of two typical FDTE schemes under constant-modulus modulation. In the design of FDTE schemes, received signals and soft decision symbols obtained at the previous iteration are utilized to recover the transmitted symbols under the minimum mean squared error (MMSE) criterion. Frequency domain equalization with frequency domain decision feedback (FDE- FDDF), and frequency domain equalization with parallel interference cancellation (FDE-PIC) are presented with details. Under constant-modulus modulation, the FDE-FDDF scheme and the FDE-PIC scheme are proved to be equivalent mathematically. The equivalence of the two FDTE schemes under constant-modulus modulation has also been verified through numerical simulations.
Z. Chen et al., "Frequency Domain Turbo Equalization under MMSE Criterion for Single Carrier MIMO Systems," Proceedings of the 2015 IEEE Global Communications Conference (2015, San Diego, CA), Institute of Electrical and Electronics Engineers (IEEE), Dec 2015.
The definitive version is available at https://doi.org/10.1109/GLOCOM.2014.7417233
2015 IEEE Global Communications Conference, GLOBECOM 2015 (2015: Dec. 6-10, San Diego, CA)
Electrical and Computer Engineering
Natural Science Foundation of ChinaNational Science Foundation (U.S.)
Keywords and Phrases
Equalizers; Mean square error; MIMO systems; Modulation; Signal interference; Constant modulus modulations; Decision feedback; Frequency domain equalization; Frequency domains; Frequency-domain turbo equalizations; Minimum mean squared error criterions; Parallel interference cancellation; Soft decision symbols; Frequency domain analysis
International Standard Book Number (ISBN)
Article - Conference proceedings
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