NDLI: Feedback-aided pilot placement for two-way cooperative-OFDM

Content Provider	IEEE Xplore Digital Library
Author	Wei Wu Xin Jia Yueming Cai Huachao Hu
Copyright Year	2011
Description	Author affiliation: PLA University of Science and Technology, Nanjing 210007, China (Yueming Cai) \|\| Academy of Equipment Command & Technology, Beijing, 101416, China (Wei Wu; Xin Jia; Huachao Hu)
Abstract	We consider the use of channel feedback to determine the pilot placement for channel estimation of two-way OFDM relay links. We propose a feedback technique in which the pilot allocation mechanism is adapted to the doubly-selective channels. The reduction in the SNR due to channel estimation error is considered by the criteria of SNR gap ratio, thus, is utilized to design the pilot placement. A suboptimal but efficient algorithm, called the iterative pilot allocation (IPA) scheme, is proposed, where iterative exchanges between old pilot locations and the location of the worst data subcarrier are done. The efficacy of the proposed IPA scheme is demonstrated through numerical simulations.
Starting Page	1
Ending Page	5
File Size	636134
Page Count	5
File Format	PDF
ISBN	9781457710094
e-ISBN	9781457710100
e-ISBN	9781457710087
DOI	10.1109/WCSP.2011.6096945
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-11-09
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fading Feedback communications OFDM Two-way relay networks Channel estimation Vectors Resource management Relays Pilot-placement Signal to noise ratio
Content Type	Text
Resource Type	Article

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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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