We establish identifiability conditions on the periodic training signals used in a superimposed scheme. Next, we consider optimal weighted channel estimators. We study the class of training signals that minimize the channel-averaged MSE; we then seek sequences in this class that minimize the peak-to-average power ratio.
Published in:
Signal Processing Advances in Wireless Communications, 2004 IEEE 5th Workshop on
Date of Conference: 11-14 July 2004