Frequency Domain Turbo Equalization under MMSE Criterion for Single Carrier MIMO Systems

Abstract

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.

Meeting Name

2015 IEEE Global Communications Conference, GLOBECOM 2015 (2015: Dec. 6-10, San Diego, CA)

Department(s)

Electrical and Computer Engineering

Sponsor(s)

Natural Science Foundation of China
National Science Foundation (U.S.)

Comments

This work is supported in part by the National Science Foundation of China (Grant No. 61471221) and the U.S. National Science Foundation under Grant No. ECCS-1408316

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)

978-1-4799-5952-5

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2015 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Dec 2015

Link to Full Text

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