OFDM for Wireless Multimedia Communications
OFDM for Wireless Multimedia Communications
Convex Optimization
Optimal training design for MIMO OFDM systems in mobile wireless channels
IEEE Transactions on Signal Processing
ML estimation of time and frequency offset in OFDM systems
IEEE Transactions on Signal Processing
Simplified channel estimation for OFDM systems with multiple transmit antennas
IEEE Transactions on Wireless Communications
BER of OFDM systems impaired by carrier frequency offset in multipath fading channels
IEEE Transactions on Wireless Communications
Robust and Improved Channel Estimation Algorithm for MIMO-OFDM Systems
IEEE Transactions on Wireless Communications
Broadband wireless access solutions based on OFDM access in IEEE 802.16
IEEE Communications Magazine
IEEE Communications Magazine
Channel estimation for OFDM systems with transmitter diversity in mobile wireless channels
IEEE Journal on Selected Areas in Communications
Effects of channel estimation on multiuser virtual MIMO-OFDMA relay-based networks
EURASIP Journal on Wireless Communications and Networking
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We present a CFO estimation algorithm and an associated channel estimation method for broadband OFDM systems with transmitter diversity. The CFO estimation algorithm explores the TD structure of the transmitted symbols carrying pilots and data, relying solely on the data component present on the symbols to estimate the CFO, thus avoiding additional overhead like training symbols or null subcarriers. An intermediate output of the CFO algorithm provides an easy-to-get initial CIR estimate that will be improved with the utilization of a TD LMMSE filter. The feasibility of the investigated methods is substantiated by system simulation using indoor and outdoor broadband wireless channel models. Simulation results show that the joint algorithms provide a near optimal system's performance.