A Comparative Study of Channel Estimation Techniques for OFDM in DVB-T2

Provided by: International Journal of Computer Applications
Topic: Software
Format: PDF
Orthogonal Frequency Division Multiplexing (OFDM) with pilot symbol assisted channel estimation is a well-known multicarrier technique for high rate transmission over wireless frequency selective fading channels. In this paper, a comparative study of channel estimation techniques is presented based on a pilot arrangement used in the second generation for Digital Video Broadcasting Terrestrial (DVB-T2) system in time-varying frequency-selective fading channels. A modified method based on Domain Transform Least Square Estimation (DTLSE) has been proposed which reduces the computational complexity by avoiding the use of the matrix inversion.

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