Analysis of DFT-Based Channel Estimators for OFDM
Wireless Personal Communications: An International Journal
Optimal training design for MIMO OFDM systems in mobile wireless channels
IEEE Transactions on Signal Processing
Optimal design and placement of pilot symbols for channel estimation
IEEE Transactions on Signal Processing
Simplified channel estimation for OFDM systems with multiple transmit antennas
IEEE Transactions on Wireless Communications
Optimal training for MIMO frequency-selective fading channels
IEEE Transactions on Wireless Communications
Optimum pilot pattern for channel estimation in OFDM systems
IEEE Transactions on Wireless Communications
How much training is needed in multiple-antenna wireless links?
IEEE Transactions on Information Theory
Channel estimation for OFDM systems with transmitter diversity in mobile wireless channels
IEEE Journal on Selected Areas in Communications
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The limited time available for acquiring the channel state in mobile broadband wireless communication systems makes it crucial to count with channel estimation methods that attain the highest accuracy with a given preamble length. For the family of preambles that probe channels repeatedly at equispaced frequencies, we find that the shortest preamble that attains a given mean square error is a sequence that under-samples the channel spectrum, thereby allowing for a better mitigation of white Gaussian noise by averaging a higher number of observations.