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The document discusses Orthogonal Frequency Division Multiplexing (OFDM) and provides an overview of the basic OFDM system. It motivates OFDM by explaining how it treats a wideband frequency selective fading channel as multiple narrowband flat fading sub-channels. It also describes how OFDM diagonalizes vector channels using discrete Fourier transform (DFT) to create parallel sub-channels with different gains. The use of a cyclic prefix is explained to eliminate inter-symbol interference between OFDM symbol

Author

fahmi1987

Language

EN