Abstract
Orthogonal Frequency Division Multiplexing (OFDM) is the wireless access technique which has become eminent in the field of research and has gained legendary importance due to its advantages. Channel estimation is one of the crucial characteristics for scrutinizing the performance of the OFDM systems. In this paper, firstly a characteristic of a Rayleigh fading channel is analyzed. Next, comb type pilot arrangement for channel estimation is used with different interpolation techniques for inspecting the channel response. The channel performance is also examined, using various pilot sequences like binary random sequence, hadamard sequence and complex sequence. Simulation results demonstrate that the use of different pilot sequences affect the channel performance, thereby leading to noble channel estimation practices.
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