On Channel Estimation in MB-OFDM UWB Systems with Time Varying Dispersive Fading Channel

S. M. Riazul Islam, Kyung Sup Kwak

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

New channel estimation technique is proposed for multiband orthogonal frequecny division multiplexing (MB-OFDM) ultra wideband (UWB) systems in multipath time varying wireless channels. Two-stages approch has been used to achieve this purpose. In first stage, Winner-Hopf filtration has been employed for the interpolation of unknown channel state information (CSI) using comb-type known pilots. In second stage, interpolated channel statistics are then modeled as autoregressive (AR) process and fed into kalman filter. Moreover, inorder to suppress intercarrier interference (ICI), an ICI mitigation filter does joinly work with kalman filter. A mathematical framework is given for the ralization of our proposed system. Link level simulation (LLS) urgs that this new tecnique shows exact channel tarcking and provides better symbol error rate (SER) performance.

Original languageEnglish
Pages (from-to)18-24
Number of pages7
JournalJournal of Digital Content Technology and its Applications
Volume4
Issue number2
Publication statusPublished - 1 Apr 2010
Externally publishedYes

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