Adaptive compressive sensing based channel estimation for TDS-OFDM systems

Recently, compressive sensing (CS) methods have been considered to improve the accuracy of channel estimation. Since the accurate estimation of the channel relies on the size of the observations, the fixed size of the observations is usually the trade-off between the channel estimation accuracy and the length of the channel delay to handle. In this paper, an adaptive compressive sensing (A-CS) algorithm is proposed to obtain the entire inter-block-interference (IBI)-free observations which can be detected dynamically. The A-CS method can utilize the entire IBI-free observations effectively. Simulation results demonstrate that the proposed method outperforms the state of art solutions whose performances are limited by the fixed size of the IBI-free region.