NDLI: Efficient channel estimation for OFDM systems with hierarchical constellations

Content Provider	IEEE Xplore Digital Library
Author	Souto, N. Dinis, R. Silva, J.C.
Copyright Year	2007
Description	Author affiliation: ISCTE, Lisboa (Souto, N.)
Abstract	In this paper we consider the use of M-QAM hierarchical constellations (quadrature amplitude modulation) combined with implicit pilots for the transmission of multicast and broadcast services in OFDM (orthogonal frequency division multiplexing) systems. This method of pilot transmission allows coherent detection at the receiver while avoiding the spectral degradation associated with the usual pilot multiplexing techniques but results in mutual interference between pilots and data. Due to the demanding channel estimation requirements and the high sensitivity to interference resulting from the usage of QAM hierarchical constellations, an enhanced receiver based on the turbo concept is developed which is capable of dealing with the inherent interference between pilots and data.
Starting Page	998
Ending Page	1002
File Size	173043
Page Count	5
File Format	PDF
ISBN	9781424409761
DOI	10.1109/ISCIT.2007.4392161
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-17
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Quadrature amplitude modulation OFDM Partial transmit sequences Interference Frequency estimation Hierarchical Constellations Radio broadcasting Noise level channel estimation iterative decoding Channel estimation implicit pilots Multi-Resolution Protection Digital video broadcasting
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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