NDLI: Optimum superimposed training for mobile OFDM systems

Content Provider	IEEE Xplore Digital Library
Author	Yang, Qinghai Kwak, Kyung Sup
Copyright Year	2011
Abstract	Superimposed training (SIT) design for estimating of time-varying multipath channels is investigated for mobile orthogonal frequency division multiplexing (OFDM) systems. The design of optimum SIT consists of two parts: The optimal SIT sequence is derived by minimizing the channel estimates' mean square error (MSE); the optimal power allocation between training and information data is developed by maximizing the averaged signal to interference plus noise ratio (SINR) under the condition of equal powered paths. The theoretical analysis is verified by simulations. For the metric of the averaged SINR against signal to noise ratio (SNR), the theoretical result matches the simulation result perfectly. In contrast to an interpolated frequency-multiplexing training (FMT) scheme or an SIT scheme with random pilot sequence, the SIT scheme with proposed optimal sequence achieves higher SINR. The analytical solution of the optimal power allocation is demonstrated by the simulation as well.
Starting Page	42
Ending Page	46
Page Count	5
File Size	833538
File Format	PDF
ISSN	12292370
Volume Number	11
Issue Number	1
Language	English
Publisher	Editorial Department of Journal of Communications and Networks
Publisher Date	2009-02-01
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	JCN
Subject Keyword	Signal to noise ratio Training Interference Channel estimation OFDM Educational institutions Resource management superimposed training (SIT) Mean square error (MSE) mobile orthogonal frequency division multiplexing (OFDM)
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Information Systems

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