Re: blind channel estimaton
Channel estimation can be performed by utilizing a training sequence which is embedded periodically into the transmitted symbol sequence. Transmission of kown symbol to be used in obtaiing channel estimation causes training-based approach to waste useful bandwidth. An alternative is to do Blind Channel Estimation, where the transmitted symbols are not assumed to be known at the receiver, to perform channel estimation. Thus in blind approaches no traiing sequence is available (or used) and the channel is estimated based solely on the noisy received signal, exploiting the statistical and other properties of the information sequence.