IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
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Pilot sharing method for uplink OFDMA channel estimation
Young-Ho JungHongsun Park
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2009 Volume 6 Issue 14 Pages 1051-1056

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Abstract

This paper proposes an orthogonal pilot-aided channel estimation scheme for uplink (UL) orthogonal frequency division multiple access (OFDMA) systems. In the proposed method, the users utilizing adjacent UL subchannels in the frequency domain share some common pilot subcarriers by using orthogonal pilot patterns. In this way, each user can effectively use more pilot subcarriers and can improve the quality of channel estimation, especially for the data subcarriers located near the edges of a multiple access (MA) user subchannel in the frequency domain, and can offer a better bit error rate than user dedicated pilot allocations.

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© 2009 by The Institute of Electronics, Information and Communication Engineers
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