Trend analysis pilot aided channel estimation in OFDM systems

Orthogonal frequency division multiplexing (OFDM) technique has a major problem due to the impact of the flat fading channel. Many channel estimation techniques addressed this problem. This paper presents a technique named trend analysis pilot aided (TAPA) channel estimation, which is dynamic technique minimizes the required training data. Simulation results show that the proposed technique exhibits almost the same BER performance with other training techniques.