A novel on-line channel estimation and tracking method for wireless OFDM systems based
on comb-type pilots is developed. Long training sequences are used to estimate the channel …

In OFDM systems, time-varying channels destroy the orthogonality between sub-channels
and cause interchannel interference (ICI). To compensate for this ICI, a Kalman filter based …

In this paper 1 an efficient implementation of robust pilot-symbol aided channel estimation
(PACE) for OFDM is presented. We propose to cyclically delay the received signal after …

Current OFDM based wireless LAN systems assume relative static channel response over
the entire packet burst length. This paper proposes applying adaptive filtering concepts to …

Orthogonal Frequency Division Multiplexing (OFDM) has been recently applied widely in
wireless communication systems, due to its high data rate, transmission capability with high …

We propose an architecture for Pilot Symbol Assisted Modulation based OFDM systems for
estimating the channel in a rayleigh fading channel. We use deviation of corresponding …

OFDM systems traditionally perform channel coefficients relying on known training
sequences. However in wireless systems, performance and mobility can be further …

Conventional time-varying (TV) channel estimation (CE) methods for OFDM systems need
optimal evenly spaced pilots to track channel time variations in one symbol period and the …

Orthogonal frequency-division multiplexing (OFDM) is well-known as a high-bit-rate
transmission technique, but the Doppler frequency offset due to the high speed movement …

A comparative investigation on various channel estimation algorithms for OFDM system in
the mobile communication environment is presented and analyzed in terms of computational …