NDLI: Polarization-based zero forcing with channel estimation

Content Provider	IEEE Xplore Digital Library
Author	Pratt, T.G. Tapse, H. Baxley, R. Walkenhorst, B. Acosta-Marum, G.
Copyright Year	2011
Description	Author affiliation: Georgia Tech Research Institute, Atlanta, 30318, USA (Baxley, R.; Walkenhorst, B.; Acosta-Marum, G.) \|\| University of Notre Dame, IN 46556, USA (Pratt, T.G.; Tapse, H.)
Abstract	A robust, low-complexity polarization-based zero forcing (ZF) filtering technique is proposed for the suppression of asynchronous, co-channel interference (ACCI) that cannot be resolved from the desired signal in angle. Suppression is achieved in the polarization-frequency dimension and requires either channel estimates or relative channel estimates for the orthogonally-polarized components of the interference signal. We consider the impact of background co-channel interference (BCCI) during channel estimation of the ACCI signal and show that the suppression performance of the ZF filter degrades with the quality of the ACCI channel estimates, i.e., the performance is approximately limited to the power ratio between the ACCI and the BCCI signals. Methods to counteract the impact of the BCCI are considered that exploit the correlation inherent in the polarization-frequency domain. One approach involves smoothing in the frequency domain, which is shown to yield improved channel estimates for ZF filtering and cancellation performance gains. Another strategy is also considered that monitors ACCI signal depolarization induced by the BCCI to identify the ACCI signal channel estimates with the least disturbance from the BCCI. The methods are demonstrated in a testbed using baseband signal generators, coherent receiver channels, and channel emulators with propagation impairment models derived from experimental testing.
Starting Page	2252
Ending Page	2257
File Size	2091155
Page Count	6
File Format	PDF
ISBN	9781467300797
ISSN	21557578
e-ISBN	9781467300810
DOI	10.1109/MILCOM.2011.6127656
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-11-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Channel estimation Interference Smoothing methods OFDM Stokes parameters Receivers Baseband Channel Estimation Polarization Zero Forcing Suppression
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in