NDLI: Channel sounding for multi-sector cooperation in OFDM-based wireless cellular systems

Content Provider	IEEE Xplore Digital Library
Author	Hyung-Sin Kim Seung-Hwan Lee Yong-Hwan Lee
Copyright Year	2010
Description	Author affiliation: School of Electrical Engineering and INMC, Seoul National University, Kwanak P.O. Box 34, 151-600 Korea (Hyung-Sin Kim; Seung-Hwan Lee; Yong-Hwan Lee)
Abstract	In this paper, we consider channel sounding for multi-sector cooperative beamforming in orthogonal frequency division multiplexing-based wireless cellular systems. The use of conventional sounding schemes may suffer from interference from other sectors and also require large signaling overhead. To reduce the sounding interference near the sector boundary as well as the signaling overhead, we allocate the sounding physical resource unit (PRU) by exploiting the channel correlation in the frequency domain. The proposed scheme transmits the sounding signal through the PRUs which are less correlated to each other, significantly reducing the signaling overhead. The whole channel information can be extracted from the sounding PRUs by means of minimum-mean-square-error estimation. Finally, the performance of the proposed sounding scheme is verified by computer simulation, showing remarkable performance improvement over conventional schemes in the presence of channel correlation, while significantly reducing the signaling overhead.
Starting Page	313
Ending Page	317
File Size	1969559
Page Count	5
File Format	PDF
ISBN	9781424454273
ISSN	17389445
e-ISBN	9781424454280
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-02-07
Publisher Place	Korea (South)
Access Restriction	Subscribed
Rights Holder	Electronics and Telecommunications Research Institute
Subject Keyword	Wireless cellular systems Interference Frequency estimation Array signal processing Resource management Frequency domain analysis Computer simulation Open systems Multiuser detection Frequency division multiplexing minimum-mean square-error estimation cooperative beamforming multi-user diversity sounding overhead frequency correlation
Content Type	Text
Resource Type	Article

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