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Distributive Pilot Arrangement Based on Modified M-sequences for OFDM Intercarrier Interference Estimation

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2 Author(s)
Hsiao-Chun Wu ; Dept. of Electr. & Comput. Eng., Louisiana State Univ., Baton Rouge, LA ; Yiyan Wu

The intercarrier interference (ICI) matrix for the orthogonal frequency division multiplexing systems usually has a fairly large dimension and changes over time for mobile communications. In this paper, we design the modified maximum-length shift-register sequences and propose a new distributive allocation scheme together with a linear interpolation for both pilot-aided and non-pilot-aided ICI vector estimates; this new method can combat the realistic non-circulant ICI matrix problem, where almost all other existing schemes could not perform effectively. Monte Carlo experiments show the significant advantages of our new ICI matrix estimator especially when the signal-to-noise ratio is larger than 15 dB

Published in:

Wireless Communications, IEEE Transactions on  (Volume:6 ,  Issue: 5 )

Date of Publication:

May 2007

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