Joint Decision-directed Beamforming and Channel Equalization Approach for OFDM Systems

Chih Feng Wu; Chun Hung Chen

doi:10.1109/DCIS.2015.7388603

Joint Decision-directed Beamforming and Channel Equalization Approach for OFDM Systems

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

In this paper, a joint decision-directed beamforming and channel equalization approach is presented for OFDM systems in the presence of co-channel interference (CCI). According to the minimum mean-square error (MMSE) criterion, the cost function of the joint approach is proposed to minimize the MSE on each subchannel and to further improve the system performance. The joint approach is a dual-loop structure composed of a beamforming and a channel equalization loops. The beamforming loop is primarily employed to suppress CCI. The channel equalization loop is used to compensate the baseband equivalent channel variations caused by multipath fading channel and adaptation of beamformer. The simulations are done for the multipath frequency-selective fading channel with CCI to show that the proposed approach can effectively eliminate CCI and compensate the channel distortions, thereby enhancing the system performance compared with the considered pilot-aided approach.

Original language	English
Title of host publication	2015 Conference on Design of Circuits and Integrated Systems, DCIS 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781467372282
DOIs	https://doi.org/10.1109/DCIS.2015.7388603
State	Published - 20 01 2016
Externally published	Yes
Event	Conference on Design of Circuits and Integrated Systems, DCIS 2015 - Estoril, Portugal Duration: 25 11 2015 → 27 11 2015

Publication series

Name	2015 Conference on Design of Circuits and Integrated Systems, DCIS 2015

Conference

Conference	Conference on Design of Circuits and Integrated Systems, DCIS 2015
Country/Territory	Portugal
City	Estoril
Period	25/11/15 → 27/11/15

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

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10.1109/DCIS.2015.7388603

Cite this

Wu, C. F., & Chen, C. H. (2016). Joint Decision-directed Beamforming and Channel Equalization Approach for OFDM Systems. In 2015 Conference on Design of Circuits and Integrated Systems, DCIS 2015 Article 7388603 (2015 Conference on Design of Circuits and Integrated Systems, DCIS 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/DCIS.2015.7388603

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title = "Joint Decision-directed Beamforming and Channel Equalization Approach for OFDM Systems",

abstract = "In this paper, a joint decision-directed beamforming and channel equalization approach is presented for OFDM systems in the presence of co-channel interference (CCI). According to the minimum mean-square error (MMSE) criterion, the cost function of the joint approach is proposed to minimize the MSE on each subchannel and to further improve the system performance. The joint approach is a dual-loop structure composed of a beamforming and a channel equalization loops. The beamforming loop is primarily employed to suppress CCI. The channel equalization loop is used to compensate the baseband equivalent channel variations caused by multipath fading channel and adaptation of beamformer. The simulations are done for the multipath frequency-selective fading channel with CCI to show that the proposed approach can effectively eliminate CCI and compensate the channel distortions, thereby enhancing the system performance compared with the considered pilot-aided approach.",

author = "Wu, {Chih Feng} and Chen, {Chun Hung}",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; Conference on Design of Circuits and Integrated Systems, DCIS 2015 ; Conference date: 25-11-2015 Through 27-11-2015",

year = "2016",

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doi = "10.1109/DCIS.2015.7388603",

language = "英语",

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Wu, CF & Chen, CH 2016, Joint Decision-directed Beamforming and Channel Equalization Approach for OFDM Systems. in 2015 Conference on Design of Circuits and Integrated Systems, DCIS 2015., 7388603, 2015 Conference on Design of Circuits and Integrated Systems, DCIS 2015, Institute of Electrical and Electronics Engineers Inc., Conference on Design of Circuits and Integrated Systems, DCIS 2015, Estoril, Portugal, 25/11/15. https://doi.org/10.1109/DCIS.2015.7388603

Joint Decision-directed Beamforming and Channel Equalization Approach for OFDM Systems. / Wu, Chih Feng; Chen, Chun Hung.
2015 Conference on Design of Circuits and Integrated Systems, DCIS 2015. Institute of Electrical and Electronics Engineers Inc., 2016. 7388603 (2015 Conference on Design of Circuits and Integrated Systems, DCIS 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AB - In this paper, a joint decision-directed beamforming and channel equalization approach is presented for OFDM systems in the presence of co-channel interference (CCI). According to the minimum mean-square error (MMSE) criterion, the cost function of the joint approach is proposed to minimize the MSE on each subchannel and to further improve the system performance. The joint approach is a dual-loop structure composed of a beamforming and a channel equalization loops. The beamforming loop is primarily employed to suppress CCI. The channel equalization loop is used to compensate the baseband equivalent channel variations caused by multipath fading channel and adaptation of beamformer. The simulations are done for the multipath frequency-selective fading channel with CCI to show that the proposed approach can effectively eliminate CCI and compensate the channel distortions, thereby enhancing the system performance compared with the considered pilot-aided approach.

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Joint Decision-directed Beamforming and Channel Equalization Approach for OFDM Systems

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