Performance of wireless OFDM systems significantly depends on channel estimation
accuracy. However, it is difficult to take into account all possible scenarios as the variance of …

The minimum mean-square error (MMSE) criterion is often used for channel estimation in
wireless OFDM systems. The MMSE channel estimators perform better than the least-square …

Dans les systèmes de communications sans fil, l'environnement situé entre une antenne
d'émission et une antenne de réception peut perturber le signal. En effet, le signal reçu est …

A reduced complexity channel estimation for OFDM systems with transmit diversity is
proposed by exploiting the correlation of the adjacent subchannel responses. The sizes of …

(OFDM) systems need accurate channel estimation in order to compensate for the
distortions caused by propagation through the dispersive channel. This work compares two …

We find that placing each pilot tone in an equally spaced manner according to the
conventional placement scheme is not suitable for doubly selective channel estimation. In …

Orthogonal frequency division multiplexing (OFDM) is a special case of multi-carrier
transmission and it can accommodate high data rate requirement of multimedia based …

In Orthogonal Frequency Division Multiplexing (OFDM) systems over fading channels,
channel estimation is carried out by transmitting pilot symbols in different patterns. The …

The present work addresses channel estimation based on the Minimum Mean Square Error
(MMSE) and Least Square (LS) criteria and also considers time-domain channel statistics. It …

This letter addresses adaptive channel estimation for OFDM systems to reduce
computational complexity. There are numerous methods suggested for low-complexity …