NDLI: Channel representative interference cancellation (CRIC) for MIMO multi-hop systems in the Manhattan scenario

Content Provider	IEEE Xplore Digital Library
Author	Korger, U. Del Galdo, G. Grosch, A. Haardt, M.
Copyright Year	2008
Description	Author affiliation: Commun. Res. Lab., Ilmenau Univ., Ilmenau (Korger, U.; Del Galdo, G.; Grosch, A.; Haardt, M.)
Abstract	The particular topology found in metropolitan areas can be exploited by employing relay nodes, which turn one-hop non-line-of-sight connections into multi-hop line-of-sight ones, thereby reducing the shadowing. However, this topology should also be considered to avoid multi-user interference and thus exploit the spatial resources optimally. Nevertheless, in most approaches which deal with this scenario, the interference is either completely neglected or estimated with strong simplifications. In this paper, we analyze the interference among users in a 4-way junction on the downlink and show that it should not be ignored. Based on this observation, we propose the channel representative interference cancellation (CRIC) scheme. The interference between users in the same street is suppressed by CDMA, whereas the one between users of different streets by the successive minimum mean square error (SMMSE) precoder. Due to the dimensionality restrictions given by SMMSE, we introduce a channel representative, which, serving as a virtual user, reflects the spatial features of all users in one street.
Starting Page	1613
Ending Page	1616
File Size	273311
Page Count	4
File Format	PDF
ISBN	9781424414833
ISSN	15206149
DOI	10.1109/ICASSP.2008.4517934
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-03-31
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Interference cancellation MIMO Topology Urban areas Relays Shadow mapping Downlink Interference suppression Multiaccess communication Mean square error methods MIMO Systems Multi-User Interference Urban Areas
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
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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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