Abstract
In this paper, we investigate the soft-feedback equalizer (SFE) proposed by Lopes et al. for multilevel modulations. The SFE is based on InterSymbol interference canceller structure and is compared to both soft-decision feedback turbo equalizer (SDFE) and the exact solution of MMSE linear equalizer (Exact-MMSE-LE) by means of EXIT chart analysis and BER simulations. Interesting results reveal that, for multilevel modulations, the SFE not only exhibits the same low complexity, low SNR threshold and fast convergence as SDFE but also reaches matched filter bound after a large number of iterations. © 2013 Springer Science + Business Media New York.
Recommended Citation
H. Lou and C. Xiao, "The Soft-feedback ISI Canceller-Based Turbo Equalizer for Multilevel Modulations," International Journal of Wireless Information Networks, vol. 21, no. 1, pp. 68 - 73, Springer, Jan 2014.
The definitive version is available at https://doi.org/10.1007/s10776-013-0223-7
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
Extrinsic information chart (EXIT); Minimum mean square error (MMSE); Soft feedback; Turbo equalizer
International Standard Serial Number (ISSN)
1572-8129; 1068-9605
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Springer, All rights reserved.
Publication Date
01 Jan 2014
Comments
National Science Foundation, Grant 1231848