Two EM-type channel estimation algorithms for OFDM with transmitter diversity.

Two EM-type channel estimation algorithms for OFDM with transmitter diversity.

We study channel estimation for orthogonal frequency-division multiplexing (OFDM) systems utilizing transmitter diversity and operating over multipath fading channels. Two expectation-maximization (EM)-type algorithms are introduced and compared with each other in terms of convergence rate. At each...

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Vydáno v:IEEE Transactions on communications 51, 1 (2003).
Hlavní autor: Yongzhe Xie
Médium: Článek
Jazyk:English
Témata:
EM-type algorithms.
OFDM link.
Channel estimation.
Convergence rate.
Expectation-maximization algorithms.
Iteration.
Multipath channel delay profiles.
Multipath fading channels.
Orthogonal frequency-division multiplexing.
Robust system performance.
Significant-tap-catching estimator.
Transmit-receive antenna pair.
Transmitter diversity.