Optimization of Channel Estimation Based Frequency Offset Estimation for HF Channel

In this paper optimization of frequency offset estimation technique based on channel estimation, which is desirable for frequency selective channels and hasfast convergence speed, for using in HF channel is addressed.Because of time variations coherence time in HF channel is short, which leads to a severe degradation in the performance of above technique in this channel. An optimization of said technique is proposed in which after removing coarse frequency offset estimation and knowing residual frequency offset range, incorrect estimations can be removed and others can be averaged to give final correct estimate. Simulation is conducted underchannel parameters with respect to MIL-STD-188-110B. the results show that proposed optimization result in improved performance of frequency offset estimation technique based on channel estimation.