A novel iterative method for turbo equalization

Xiang Cheng, Cheng Xiang Wang, Dongfeng Yuan, Hsiao-Hwa Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

A number of turbo equalization (TE) methods with reduced complexity have recently been introduced, in which the maximum a posteriori probability (MAP) equalizer is replaced by suboptimal and low complexity ones. These methods can save the computational complexity significantly, but with sacrificed system performance. In this paper, we first use the extrinsic information transfer (EXIT) chart tool to visually explain why these suboptimal methods have the worse performance. Then, we propose a novel iterative method for TE which takes advantage of both parallel and serial concatenation turbo-like schemes. In the novel iterative method, the EXIT chart switches between the two schemes as a balance. The transmitter side is also changed correspondingly by utilizing the concept of repetition code to acquire a structure similar to turbo codes. It is shown from both analytical and simulation results that the proposed iterative method for TE results in the excellent system performance while its realization complexity is kept relatively low.

Original languageEnglish
Title of host publication2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
Pages489-493
Number of pages5
DOIs
Publication statusPublished - 2007 Nov 27
Event2007 IEEE Wireless Communications and Networking Conference, WCNC 2007 - Kowloon, China
Duration: 2007 Mar 112007 Mar 15

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
ISSN (Print)1525-3511

Other

Other2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
CountryChina
CityKowloon
Period07-03-1107-03-15

Fingerprint

Iterative methods
Turbo codes
Equalizers
Transmitters
Computational complexity
Switches

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Cheng, X., Wang, C. X., Yuan, D., & Chen, H-H. (2007). A novel iterative method for turbo equalization. In 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007 (pp. 489-493). [4204271] (IEEE Wireless Communications and Networking Conference, WCNC). https://doi.org/10.1109/WCNC.2007.95
Cheng, Xiang ; Wang, Cheng Xiang ; Yuan, Dongfeng ; Chen, Hsiao-Hwa. / A novel iterative method for turbo equalization. 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007. 2007. pp. 489-493 (IEEE Wireless Communications and Networking Conference, WCNC).
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abstract = "A number of turbo equalization (TE) methods with reduced complexity have recently been introduced, in which the maximum a posteriori probability (MAP) equalizer is replaced by suboptimal and low complexity ones. These methods can save the computational complexity significantly, but with sacrificed system performance. In this paper, we first use the extrinsic information transfer (EXIT) chart tool to visually explain why these suboptimal methods have the worse performance. Then, we propose a novel iterative method for TE which takes advantage of both parallel and serial concatenation turbo-like schemes. In the novel iterative method, the EXIT chart switches between the two schemes as a balance. The transmitter side is also changed correspondingly by utilizing the concept of repetition code to acquire a structure similar to turbo codes. It is shown from both analytical and simulation results that the proposed iterative method for TE results in the excellent system performance while its realization complexity is kept relatively low.",
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Cheng, X, Wang, CX, Yuan, D & Chen, H-H 2007, A novel iterative method for turbo equalization. in 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007., 4204271, IEEE Wireless Communications and Networking Conference, WCNC, pp. 489-493, 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007, Kowloon, China, 07-03-11. https://doi.org/10.1109/WCNC.2007.95

A novel iterative method for turbo equalization. / Cheng, Xiang; Wang, Cheng Xiang; Yuan, Dongfeng; Chen, Hsiao-Hwa.

2007 IEEE Wireless Communications and Networking Conference, WCNC 2007. 2007. p. 489-493 4204271 (IEEE Wireless Communications and Networking Conference, WCNC).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Cheng X, Wang CX, Yuan D, Chen H-H. A novel iterative method for turbo equalization. In 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007. 2007. p. 489-493. 4204271. (IEEE Wireless Communications and Networking Conference, WCNC). https://doi.org/10.1109/WCNC.2007.95