NDLI: Semi-blind MIMO OFDM systems with precoding aided CFO estimation and ICA based equalization

Content Provider	IEEE Xplore Digital Library
Author	Yufei Jiang Xu Zhu Eng Gee Lim Hai Lin Yi Huang
Copyright Year	2013
Description	Author affiliation: Dept. of Electr. & Inf. Syst., Osaka Prefecture Univ., Sakai, Japan (Hai Lin) \|\| Dept. of Electr. & Electron. Eng., Xi'an JiaoTong Liverpool Univ., Suzhou, China (Eng Gee Lim) \|\| Dept. of Electr. Eng. & Electron., Univ. of Liverpool, Liverpool, UK (Yufei Jiang; Xu Zhu; Yi Huang)
Abstract	We propose a semi-blind multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system, with a precoding aided carrier frequency offset (CFO) estimation approach, and an independent component analysis (ICA) based equalization structure. A number of reference data sequences are carefully designed offline and are superimposed to source data via a non-redundant linear precoding process, which can kill two birds with one stone, without introducing any extra total transmit power and spectral overhead. First, the reference data sequences are selected from a pool of carefully designed orthogonal sequences. The CFO estimation is to minimize the sum cross-correlation between the CFO compensated signals and the rest orthogonal sequences in the pool. Second, the same reference data enable elimination of the permutation and quadrant ambiguity in the ICA equalized signals by maximizing the cross-correlation between the ICA equalized signals and the reference data. Simulation results show that, without extra bandwidth and power needed, the proposed semi-blind system achieves a bit error rate (BER) performance close to the ideal case with perfect channel state information (CSI) and no CFO. Also, the precoding aided CFO estimation outperforms the constant amplitude zero autocorrelation (CAZAC) sequences based CFO estimation approach, with no spectral overhead.
Sponsorship	IEEE Commun. Soc.
Starting Page	3499
Ending Page	3503
File Size	269312
Page Count	5
File Format	PDF
ISBN	9781479913534
DOI	10.1109/GLOCOM.2013.6831615
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-12-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Estimation OFDM MIMO Vectors Bit error rate Correlation Transmitting antennas carrier frequency offset (CFO) precoding independent component analysis (ICA)
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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