Applications of blind channel estimation to HF communication
Qi Zhang, J.Q. Bao, Lang Tong · 2002
We propose a new channel estimation and equalization scheme for time varying HF channels. Using a blind channel estimation (BCE) algorithm, the new approach estimates the channel impulse response directly without relying on the probe. Combined with the nonlinear data-directed estimator (NDDE), the new algorithm has two main advantages. First, it improves the transmission efficiency by eliminating part or even all the probe symbols. Second, it avoids the propagation of channel estimation error in conventional schemes. Simulation results are presented for the testing scenario of MIL-STD-188-11OA.