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Author Engiz, B.K. ♦ Kurnaz, C. ♦ Sezgin, H.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2012
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science ♦ Technology ♦ Engineering & allied operations
Subject Keyword Fading ♦ Interpolation ♦ coherence time ♦ coherence bandwidth ♦ OFDM ♦ Bit error rate ♦ Channel estimation ♦ Time frequency analysis ♦ 2-D channel estimation ♦ optimum pilot symbol interval
Abstract In this study, the effect of pilot arrangement on OFDM system performance for different time and frequency selective fading channels is investigated. Pilot symbols are placed in rectangular 2-D pilot pattern in chosen intervals both in time and frequency domain, and corresponding system performances are given in terms of BER. The pilot symbols that give the lowest BER for different channel profiles are determined as the optimum pilot symbols, and the interval between these optimum pilot symbols are defined as the optimum pilot interval in time and frequency direction. Then the relationships between the optimum pilot intervals and channels' coherence times and coherence bandwidths are evaluated. It is seen from the results the optimum pilot interval can be related best with coherence time and coherence bandwidth at 0.9 correlation. Therefore 2.5 pilot symbols per Bc,0.9 and 25 pilot symbols per Tc,0.9 can be used.
Description Author affiliation: Ondokuz Mayis University, Department of Electrical Engineering and Electronics, Samsun, Turkey (Engiz, B.K.; Kurnaz, C.; Sezgin, H.)
ISBN 9781467314299
ISSN 21604886
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2012-10-08
Publisher Place Spain
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
e-ISBN 9781467314305
Size (in Bytes) 458.63 kB
Page Count 5
Starting Page 113
Ending Page 117


Source: IEEE Xplore Digital Library