[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5573/IEIESPC.2014.3.1.35

Modified MMSE Estimator based on Non-Linearly Spaced Pilots for OFDM Systems

Khan, Latif Ullah (Department of Electrical Engineering, University of Engineering & Technology)

Publication Information

IEIE Transactions on Smart Processing and Computing / v.3, no.1, 2014 , pp. 35-39 More about this Journal

Abstract

This paper proposes a Modified Minimum Mean Square Error (M-MMSE) estimator for an Orthogonal Frequency Division Multiplexing (OFDM) System over fast fading Rayleigh channel. The proposed M-MMSE estimator considered the effects of the efficient placement of pilots based on the channel energy distribution. The pilot symbols were placed in a non-linear manner according to the density of the channel energy. Comparative analysis of the MMSE estimator for a comb-type pilot arrangement and M-MMSE estimator for the proposed pilot insertion scheme revealed significant performance improvement of the M-MMSE estimator over the MMSE estimator.

Keywords

OFDM; Modified MMSE estimator; Comb-type channel estimation;

Citations & Related Records

Reference

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